CN220808479U - Vibration shear-ultrasonic hot bench experiment device - Google Patents

Abstract

The utility model belongs to the field of polymer processing equipment, and in particular relates to a vibration shearing-ultrasonic hot bench experiment device, which comprises a forming die above a mounting platform, a moving mechanism and an ultrasonic part below the mounting platform, wherein the forming die is respectively connected with the output ends of the moving mechanism and the ultrasonic part, and also comprises a computer control system connected with the moving mechanism; compared with a shearing heat table device which can only provide single shearing and heat sources, the device has flexibility, multifunction and accuracy, and can introduce flexible and controllable ultrasonic waves and shearing external force fields; compared with other common shearing ultrasonic devices, the device has a multifunctional mode, comprises ultrasonic welding molding, ultrasonic compression molding, ultrasonic injection molding and vibration shearing molding, can more accurately simulate an external force field in the actual processing process, accurately regulate and control a material structure, and rapidly process polymer molded products in a short time, thereby improving the production efficiency and the product quality.

Description

Vibration shear-ultrasonic hot bench experiment device

Technical Field

The utility model belongs to the field of polymer processing equipment, and particularly relates to a vibration shear-ultrasonic hot bench experiment device.

Background

In conventional polymer processing, external force fields have a significant impact on the structure and properties of the material. However, in actual production, it is difficult to accurately simulate and control the external force field to which the polymer article is subjected during processing. This results in some articles having properties and qualities that are not at the desired level. To address this problem, several improved methods have been proposed, including applications of vibratory shearing and ultrasonic techniques. The vibratory shear can modify the entangled network and the condensed structure of the material by applying shear forces, thereby modulating the properties of the material. The ultrasonic wave can utilize the high-frequency vibration energy to rapidly heat and plasticize the polymer, and complete the welding and forming process in a short time.

In the research about adding external fields such as vibration shearing and ultrasonic wave, the existing polymer processing equipment generally has external fields such as pressure, temperature, shearing and stretching in a polymer processing machine head or a die, and after the external fields such as vibration shearing and ultrasonic wave are overlapped, the external fields are complex, and the individual action of each field is difficult to analyze.

The invention patent application CN109927192A discloses a method and a device for cooperatively preparing an ultra-high viscosity polymer blend, wherein an ultrasonic probe is in direct contact with a polymer melt, so that ultrasonic vibration generated by an ultrasonic generator is superposed on the melt, and the melt is subjected to vibration shear stress, but in the device, the effect of ultrasonic waves is single.

Disclosure of utility model

In order to solve the above problems, the present utility model aims to provide a device capable of analyzing the effects of a vibration shear field, an ultrasonic field and a vibration shear-ultrasonic field on a polymer melt or solution independently, thereby providing a more complete theoretical basis for polymer external field auxiliary processing, optimizing the vibration shear or ultrasonic external field effects, and further improving the structure and performance of a polymer product.

The purpose of the utility model is realized in the following way:

The utility model provides a vibration shear-supersound heat table experimental apparatus, includes forming die, motion and the ultrasonic component of mounting platform below of mounting platform top, forming die respectively with the energy output of motion, ultrasonic component is connected, still includes the computer control system who is connected with the motion.

Further, the forming die comprises an upper heat insulation plate, an upper heating plate, a male die, a female die, a lower heating plate and a lower heat insulation plate which are sequentially arranged from top to bottom, and the central positions of the female die, the lower heating plate and the lower heat insulation plate are communicated to form a cavity.

Preferably, the upper heat insulation plate, the upper heating plate, the male die and the female die, the lower heating plate and the lower heat insulation plate are all in threaded connection.

Preferably, the male die adopts a stepped male die, so that the male die is convenient to be matched with the female die tightly, stability during horizontal reciprocating motion is guaranteed, and melt is prevented from overflowing from a die gap after extrusion and shearing.

Preferably, the size of the cavity is 30×30mm.

Further, the heating rods are arranged inside the upper heating plate and the lower heating plate, the cooling water channels are arranged inside the male die and the female die, each cooling water channel comprises two groups of water inlets which are arranged in parallel and water outlets which are communicated with the water inlets, each water outlet is vertically arranged with the corresponding water inlet, one end of each water outlet is communicated with the outside, the upper heating plate and the lower heating plate are used for heating polymers in the forming die to a specified temperature, and the cooling water channels can cool the upper heating plate and the lower heating plate through adding cooling mediums.

Preferably, the cooling water channel has an inner diameter of 6mm.

Further, the motion mechanism is including set up in voice coil motor on the mounting platform and lead screw slip table, linking bridge and the slide bar that connects gradually, the lead screw slip table with voice coil motor's output is connected, the slide bar keep away from linking bridge one end with set up in telescopic link sliding connection on the mounting platform, voice coil motor with computer control system connects, voice coil motor can directly realize controlling reciprocating motion, and computer control system controls voice coil motor's motion frequency and stroke, and voice coil motor drives lead screw slip table, linking bridge and slide bar side-to-side reciprocating motion simultaneously, and then drives the terrace die side-to-side motion also, and the telescopic link height can be adjusted, plays the effect of supporting the slide bar, is provided with solid locking piece on the telescopic link, can be with the high locking of telescopic link.

Further, the computer control system is in the prior art, and comprises a computer terminal and a control software CME installed on the computer terminal, preferably, the model of the control software is: TMPT-VCA-2016052501.

Further, the lead screw slipway comprises a base, a sliding block positioned in the base and a rocker for controlling the sliding block to move along the base, wherein the base is connected with the output end of the voice coil motor, the sliding block is connected with the connecting support, and the sliding block can move up and down along the base by shaking the rocker, so that the connecting support and the male die are driven to move up and down.

The voice coil motor and the screw rod sliding table are arranged, so that the male die can move in the horizontal and vertical directions.

Preferably, the model of the voice coil motor is TMEC1300-030, and the model of the screw rod sliding table is LX0280-150.

Further, a lock nut is arranged on the connecting support, the bottom of the connecting support is connected with the upper heat insulation plate, the sliding rod is detachable, and the lock nut is used for fixing the sliding rod.

Further, the ultrasonic component comprises a vibrating head positioned in the cavity, the vibrating head is connected with an ultrasonic transducer through an amplitude transformer, and the ultrasonic component further comprises an ultrasonic transmitting device, wherein the ultrasonic transmitting device is connected with the ultrasonic transducer, and the ultrasonic component has the function of generating an ultrasonic field effect on the polymer and can also rapidly heat and plasticize the polymer.

Wherein, the ultrasonic emission device, the ultrasonic transducer, the amplitude transformer and the vibrating head are all the prior art in the field, and the model of the ultrasonic part is preferably JH3000-20.

Preferably, the ultrasonic vibration frequency of the ultrasonic component is 21kHz, the maximum power is 3000W, the amplitude transformer is a trapezoid amplitude transformer, and the ultrasonic component is made of titanium alloy materials.

Further, the voice coil motor is characterized by further comprising sensors arranged in the upper heating plate, the water inlet channel and the connection part of the voice coil motor and the screw rod sliding table, and the sensors are also connected with the computer control system.

Preferably, the sensor inside the upper heating plate is a temperature sensor for monitoring the temperature and pressure change of the melt in the ultrasonic action process, the sensor inside the water inlet channel is a thermocouple, the sensor at the joint of the voice coil motor and the screw rod sliding table is a grating ruler for monitoring the displacement change of the screw rod sliding table, and the sensor is also connected with the computer control system, so that data can be transmitted to a computer terminal, and people can conveniently check the data.

The advantages of the utility model are flexibility, versatility and accuracy. Compared with a shearing heat table device which can only provide single shearing and heat sources, the device can introduce flexible and controllable ultrasonic and shearing external force fields. Compared with other common shearing ultrasonic devices, the device has a multifunctional mode, including ultrasonic welding molding, ultrasonic compression molding, ultrasonic injection molding and vibration shearing molding. The external force field in the actual processing process can be more accurately simulated, the material structure can be accurately regulated and controlled, and the polymer molded product can be rapidly processed in a short time, so that the production efficiency and the product quality are improved.

The beneficial effects of the utility model are as follows:

1. According to the utility model, the external force applied to the polymer product in the actual processing process can be simulated through the introduction of ultrasonic waves and shearing external force fields so as to regulate and control the structure and the property of the material;

2. The vibration shear-ultrasonic heat table experimental device provided by the utility model can realize ultrasonic welding molding, research is carried out on an ultrasonic plasticizing process, namely no external heat source is adopted, ultrasonic high-frequency vibration energy is transmitted to a contacted material, the mechanical energy is converted into heat energy of the material by utilizing the thermal effect of ultrasonic, the polymer is rapidly heated in a short time to complete plasticizing, ultrasonic welding is completed in a die, the residence time of the polymer at a high temperature is shortened, and the surface welding process of a complex precise workpiece is completed;

3. The vibration shear-ultrasonic hot bench experimental device provided by the utility model can realize ultrasonic compression molding, the polymer material is raised to a specified temperature through the lower heating plate, the male die is pressed down to complete compression molding, ultrasonic vibration is applied in the pressing process, the surface quality of a compression molded product is improved, and meanwhile, the condensed state structure is changed to improve the mechanical property;

4. The vibration shearing-ultrasonic hot bench experimental device provided by the utility model can realize an ultrasonic injection molding process, ultrasonic vibration can be applied in a plasticizing stage, an injection stage and a cooling stage of polymer injection molding by utilizing an ultrasonic system, and the accurate control of the pressure of a die cavity and the speed and the amplitude of reciprocating shearing can be realized by controlling a motion mechanism so as to complete the simulation of the ultrasonic auxiliary injection molding process of a miniature workpiece;

5. The vibration shear-ultrasonic heat table experimental device provided by the utility model is provided with the sensor, can monitor the temperature and pressure changes in real time, and can accurately measure and control the parameters such as the temperature and the pressure of the melt by being connected with an online detection system.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a vibration shear-ultrasonic hot stage experimental device of the utility model;

FIG. 2 is a schematic view of a molding die according to the present utility model;

FIG. 3 is a schematic view of a molding cavity structure of the present utility model;

FIG. 4 is a cross-sectional view of a cooling gallery of the present utility model;

FIG. 5 is a schematic diagram of a screw rod sliding table structure according to the utility model;

FIG. 6 is a schematic view of the structure of an ultrasonic device of the present utility model;

FIG. 7 is a schematic diagram of the connection of the computer control system to the sensor and voice coil motor of the present utility model;

In the figure: 1. the device comprises a forming die, 2, a moving mechanism, 3, an ultrasonic part, 5, a computer control system, 11, a lower heat insulation plate, 12, a lower heating plate, 13, a female die, 14, a male die, 15, an upper heating plate, 16, an upper heat insulation plate, 131, a cavity, 22, a slide bar, 23, a locking nut, 24, a connecting support, 25, a screw rod sliding table, 26, a voice coil motor, 27, a base, 28, a mounting platform, 29, a slide block, 30, a rocker, 31, an ultrasonic transmitting device, 32, an ultrasonic transducer, 33, an amplitude transformer, 34, a vibrating head, 41, a heating rod, 42, a cooling water channel, 421, a water inlet channel and 422 water outlet channel.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1-7, the utility model provides a vibration shear-ultrasonic hot stage experimental device, which comprises a forming die 1 above a mounting platform 28, a moving mechanism 2 and an ultrasonic component 3 below the mounting platform 28, wherein the forming die 1 is respectively connected with the energy output ends of the moving mechanism 2 and the ultrasonic component 3, and also comprises a computer control system 5 connected with the moving mechanism 2.

Further, the forming mold 1 includes an upper heat insulation plate 16, an upper heating plate 15, a male mold 14, a female mold 13, a lower heating plate 12 and a lower heat insulation plate 11 sequentially arranged from top to bottom, and central positions of the female mold 13, the lower heating plate 12 and the lower heat insulation plate 11 are communicated to form a cavity 131.

In the embodiment, the upper heat insulation plate, the upper heating plate, the male die and the female die, the lower heating plate and the lower heat insulation plate are all in threaded connection, the male die is a stepped male die, and the size of the cavity is 30 multiplied by 30mm.

Further, the heating rods 41 are disposed inside the upper heating plate 15 and the lower heating plate 12, the cooling water channels 42 are disposed inside the male mold 14 and the female mold 13, the cooling water channels 42 comprise two groups of water inlet channels 421 disposed in parallel and water outlet channels 422 communicated with the water inlet channels 421, the water outlet channels 422 are disposed perpendicular to the water inlet channels 421, and one end of each water outlet channel is communicated with the outside.

In this example, the cooling water passage has an inner diameter of 6mm.

Further, the motion mechanism 2 includes a voice coil motor 26 disposed on the mounting platform 28, a screw rod sliding table 25, a connecting bracket 24 and a sliding rod 22 sequentially connected, the screw rod sliding table 25 is connected with an output end of the voice coil motor 26, one end of the sliding rod 22, which is far away from the connecting bracket 24, is slidably connected with a telescopic rod 21 disposed on the mounting platform 28, and the voice coil motor 26 is connected with the computer control system 5.

In the embodiment, the model of the voice coil motor is TMEC1300-030, the model of the screw rod sliding table is LX0280-150, and the control software of the computer control system selects TMPT-VCA-2016052501.

Further, the screw rod sliding table 25 includes a base 27, a slider 29 located inside the base, and a rocker 30 for controlling the slider 29 to move along the base 27, the base 27 is connected with an output end of the voice coil motor 26, and the slider 29 is connected with the connection bracket 24.

Further, a locking nut 23 is mounted on the connecting bracket 24, and the bottom is connected with the upper heat insulation plate 16.

Further, the ultrasonic member 3 includes a vibration head 34 located in the cavity 131, the vibration head 34 is connected to the ultrasonic transducer 32 through a horn 33, and further includes an ultrasonic transmitting device 31 connected to the ultrasonic transducer 32.

In the embodiment, the ultrasonic vibration frequency of the ultrasonic component is 21kHz, the maximum power is 3000W, the amplitude transformer is a trapezoid amplitude transformer, and the ultrasonic component is made of titanium alloy materials.

Further, the device also comprises a sensor 51 arranged in the upper heating plate 15, the water inlet channel 421 and the connection part of the voice coil motor 26 and the screw rod sliding table 25, and the sensor 51 is also connected with the computer control system 5.

In the embodiment, the sensor in the upper heating plate is a temperature sensor, the sensor in the water inlet channel is a thermocouple, and the sensor at the joint of the voice coil motor and the screw rod sliding table is a grating ruler.

The working process of the utility model comprises the following steps:

When the device is used for compression molding, a polymer to be molded is placed in the female die, then the heating rod is started, the temperatures of the upper heating plate and the lower heating plate rise, the male die and the female die are heated, when the temperature sensor monitors that the temperature of the upper heating plate reaches the designated temperature, the locking piece on the telescopic rod is loosened, meanwhile, the rocker is rocked, the screw rod sliding table drives the male die to descend, the polymer is compression molded, the height of the telescopic rod is adjusted to ensure the male die level, and then the locking piece is locked. The voice coil motor is started, the movement frequency and amplitude of the voice coil motor are controlled by the computer control system, and meanwhile, the ultrasonic component is started to apply ultrasonic vibration to the polymer, so that the polymer is simultaneously subjected to vibration shearing and ultrasonic field, and the effects of improving the surface quality of a compression molding product and improving the mechanical property by changing the condensed state structure are achieved. Vibration shear or ultrasonic field can be applied independently to study the influence of only one force field on the melt. The sensor monitors the temperature and the change of shearing amplitude at any time in the process, an operator carries out treatment according to the information fed back by the sensor, and if the temperature is too high, a cooling medium is added into the cooling water channel for cooling.

When the ultrasonic welding device is used for ultrasonic welding, two polymers to be welded are placed in a female die, an ultrasonic part is started, a vibrating head generates high-frequency vibration, energy is transferred into a polymer material, mechanical energy is converted into heat energy, the temperature of the material is rapidly increased to complete plasticization, then a rocker is rocked, and a male die is lowered to apply pressure to the polymers to complete welding.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a vibration shear-supersound hot bench experimental apparatus, its characterized in that includes forming die (1) of mounting platform (28) top, motion (2) and ultrasonic component (3) of mounting platform (28) below, forming die (1) respectively with motion (2), ultrasonic component (3)'s output is connected, still includes computer control system (5) be connected with motion (2).

2. The vibration shear-ultrasonic heat bench experiment device according to claim 1, wherein the forming die (1) comprises an upper heat insulation plate (16), an upper heating plate (15), a male die (14), a female die (13), a lower heating plate (12) and a lower heat insulation plate (11) which are sequentially arranged from top to bottom, and the central positions of the female die (13), the lower heating plate (12) and the lower heat insulation plate (11) are communicated to form a cavity (131).

3. The vibration shear-ultrasonic hot bench experiment device according to claim 2, characterized in that heating rods (41) are arranged inside the upper heating plate (15) and the lower heating plate (12), cooling water channels (42) are arranged inside the male die (14) and the female die (13), the cooling water channels (42) comprise two groups of water inlet channels (421) which are arranged in parallel and water outlet channels (422) which are communicated with the water inlet channels (421), the water outlet channels (422) are vertically arranged with the water inlet channels (421), and one end of each water outlet channel is communicated with the outside.

4. A vibration shear-ultrasonic heat bench experiment device according to claim 3, characterized in that said motion mechanism (2) comprises a voice coil motor (26) arranged on said mounting platform (28) and a screw rod sliding table (25), a connecting bracket (24) and a slide rod (22) which are sequentially connected, said screw rod sliding table (25) is connected with the output end of said voice coil motor (26), one end of said slide rod (22) far away from said connecting bracket (24) is slidably connected with a telescopic rod (21) arranged on said mounting platform (28), and said voice coil motor (26) is connected with said computer control system (5).

5. The vibration shear-ultrasonic hot bench experiment device according to claim 4, characterized in that the screw sliding table (25) comprises a base (27), a sliding block (29) positioned in the base and a rocker (30) for controlling the sliding block (29) to move along the base (27), wherein the base (27) is connected with the output end of the voice coil motor (26), and the sliding block (29) is connected with the connecting bracket (24).

6. The vibration shear-ultrasonic bench experiment device according to claim 4, characterized in that the connecting bracket (24) is provided with a lock nut (23) and the bottom is connected with the upper heat insulation plate (16).

7. A vibrating shear-ultrasonic bench test device according to claim 2, characterized in that the ultrasonic member (3) comprises a vibrating head (34) located in the cavity (131), the vibrating head (34) being connected to an ultrasonic transducer (32) by means of a horn (33), and further comprising ultrasonic emitting means (31) connected to the ultrasonic transducer (32).

8. The vibration shear-ultrasonic hot bench experiment device according to claim 4, further comprising a sensor (51) arranged inside the upper heating plate (15), inside a water inlet channel (421) and at the connection position of the voice coil motor (26) and the screw sliding table (25), wherein the sensor (51) is connected with the computer control system (5).