CN219603480U - Ceramic brazing equipment - Google Patents

Abstract

The utility model discloses ceramic brazing equipment, which comprises a furnace body and a heating control component, wherein a brazing die is arranged in the furnace body, the heating control component comprises a first electrode, a second electrode, an electric energy regulator and a power supply, the first electrode and the second electrode are arranged on the brazing die and are connected with two ends of a piece to be welded, the first electrode, the electric energy regulator, the power supply and the second electrode form a heating electric loop, the furnace body is provided with an air inlet and an air outlet, the piece to be welded is provided with the heating control component, the temperature rising speed of the temperature of the brazing die is controlled by regulating the change of the current or the voltage through the electric energy regulator, and the heating temperature of each brazing die can be different, so that brazing materials with different materials or large temperature differences can be brazed in one ceramic brazing equipment without interference, the required temperature can be reached by using less electric energy, and the heat utilization rate is extremely high.

Description

Ceramic brazing equipment

Technical Field

The utility model relates to the technical field of brazing equipment, in particular to ceramic brazing equipment.

Background

The melting point of the brazing material is lower than that of the connector body, the conducting rod, the ceramic and the transition ring. The ceramic soldered sealing connector is characterized in that soldering flux is melted into liquid state at high temperature, so that the soldering flux is soaked with a conducting rod, ceramic and a transition ring, and the transition ring is soaked with a connector body, and then the sealing is formed after cooling and solidification. The sealing connector manufactured by the ceramic brazing scheme has the advantages of simple structure, good sealing performance, high temperature resistance, low temperature resistance, long service life and the like, and the technology is mature and widely applied.

The special ceramic brazing equipment is used in the brazing process, the brazing furnace is generally provided with a plurality of heating temperature areas, each temperature area can be independently provided with a temperature, and the part is subjected to a specific temperature-time curve of 'heating-insulating-cooling' in the brazing process, which is an experience curve which is developed in the production process for a long time. The whole brazing process is carried out in a non-oxidizing gas environment, nitrogen or inert gas is generally filled, and the oxygen content in the furnace is controlled to be a low value, because the surface of a metal part can be rapidly oxidized at high temperature, and a dense oxide layer can prevent the infiltration effect between brazing material and metal, so that poor sealing is caused.

The brazing temperature is generally 800-1100 ℃ (the temperature of some low-temperature brazing materials is about 600 ℃), a heating device is arranged in the furnace chamber, the heating device firstly heats the gas in the furnace, and then the brazing die and the parts are heated to the set temperature through the heat exchange of the gas, so that the whole temperature rising speed is very slow, huge energy is consumed, and in addition, a thicker heat insulation layer needs to be wrapped outside the whole furnace chamber. During brazing, all parts in the whole furnace chamber are heated to a very high temperature, so that all parts in the furnace are required to be made of high-temperature resistant materials. In the later cooling stage, the temperature in the furnace is higher, the heat capacity is large, and the heat preservation effect of the brazing mold is good, so that the cooling process takes a long time, and a large amount of energy is consumed if forced refrigeration accelerates cooling. The special ceramic brazing equipment generally has the advantages of large occupied area, high energy consumption, long production period and high price.

The core function of such a ceramic brazing apparatus is heating temperature control, all designed to create a safe and stable environment that allows the braze to melt and infiltrate at the specified temperature. The heating mode of heating gas firstly and then indirectly heating brazing material adopted by the equipment determines that the equipment needs to use a heater with higher power, a better temperature homogenizing device and a temperature heat-preserving and heat-insulating facility. However, if a plurality of connector products are placed in the furnace at the same time, they are in the same gas atmosphere, and if the internal temperature of the gas atmosphere is not uniform, the solder temperature in each connector product may be inconsistent, and thus poor sealing of the connector products may be caused.

In addition, a brazing material generally has only an optimal temperature-time curve to ensure the sealing effect after brazing, that is, only one type of brazing material or the brazing material with a very similar temperature curve can be brazed in a same furnace chamber in a period of time, if a plurality of types of brazing materials with very different temperatures are used at the same time, a plurality of devices are used, and the purchase cost of the devices is increased.

For example, application number: CN201921134197.2, named as a brazing furnace and brazing apparatus, is configured to convey nitrogen through a first conveying pipe, to exhaust air in the brazing mold and the second conveying pipe, and to continuously convey nitrogen through the first conveying pipe, so that air can be prevented from entering the brazing mold and the first conveying pipe, which is safer.

There is thus a need for improvements and improvements in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a ceramic brazing apparatus capable of reducing electric power required for brazing of the ceramic brazing apparatus.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a pottery equipment of brazing, includes furnace body and heating control assembly, be provided with the brazing mold in the furnace body, heating control assembly includes first electrode, second electrode, electric energy regulator and power, first electrode, second electrode set up on the brazing mold, with wait to weld the both ends of piece to be connected, wait to weld piece, first electrode, electric energy regulator, power, second electrode and form and heat the electric return circuit, the furnace body has business turn over gas port.

In the ceramic brazing equipment, the heating control component further comprises a contact type temperature sensor, wherein the contact type temperature sensor is arranged on the brazing die, is positioned at a part to be welded and is electrically connected with the electric energy regulator.

In the ceramic brazing device, the heating control component further comprises a plurality of non-contact temperature sensors, and the non-contact temperature sensors are electrically connected with the electric energy regulator.

The ceramic brazing equipment further comprises an automatic feeding assembly and an automatic discharging assembly, wherein the automatic feeding assembly is arranged at the inlet of the furnace body, and the automatic discharging assembly is positioned at the outlet of the furnace body.

In the ceramic brazing equipment, the piece to be welded is a connector, the connector comprises a conducting rod, a connector body, ceramic and an excessive ring, and the first electrode and the second electrode are respectively connected with two ends of the conducting rod of the connector.

In the ceramic brazing equipment, the piece to be welded is a connector, the connector comprises a conducting rod, a connector body, ceramic and an excessive ring, and the first electrode and the second electrode are respectively connected with two ends of the connector body.

In the ceramic brazing equipment, a plurality of brazing molds are arranged, one heating control component is arranged, and each brazing mold is connected with the first electrode and the second electrode after being connected in parallel or in series.

In the ceramic brazing equipment, a plurality of brazing molds and heating control components are arranged, and the brazing molds and the heating control components are arranged in a one-to-one correspondence mode.

In the ceramic brazing equipment, a heat insulation layer is arranged between each two brazing molds.

In the ceramic brazing equipment, the first electrode and the second electrode are connected with brazing materials.

Compared with the prior art, the ceramic brazing equipment comprises a furnace body and a heating control component, wherein the furnace body is internally provided with brazing dies, the heating control component comprises a first electrode, a second electrode, an electric energy regulator and a power supply, the first electrode and the second electrode are arranged on the brazing dies and are connected with two ends of a piece to be welded, the first electrode, the electric energy regulator, the power supply and the second electrode form a heating electric loop, the piece to be welded of the heating control component is used for controlling the temperature rising speed of the brazing dies through the adjustment of the change of the current or the voltage of the electric energy regulator, and the heating temperature of each brazing die can be different, so that brazing materials with different materials or large temperature difference can be brazed in one ceramic brazing equipment, the brazing materials are mutually interfered, the required temperature can be achieved by using less electric energy, and the heat utilization rate is extremely high.

Drawings

FIG. 1 is a schematic view of a first alternative embodiment of electrode connection for a ceramic brazing apparatus according to the present utility model.

FIG. 2 is a schematic view of a second alternative embodiment of electrode connection for a ceramic brazing apparatus according to the present utility model.

FIG. 3 is a schematic view of a third alternative embodiment of electrode connection for a ceramic brazing apparatus according to the present utility model.

The drawings are marked with the following description:

the heating control assembly 2, the first electrode 21, the second electrode 22, the power conditioner 23, the power supply 24, the connector 3, the conductive rod 31, the connector body 32, the ceramic 33, the transition ring 34, the brazing material 4.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It is noted that when an element is referred to as being "mounted," "secured," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that, in the embodiments of the present utility model, terms such as left, right, up, and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

Referring to fig. 1 and 2, the ceramic brazing apparatus provided by the present utility model includes a furnace body (not shown in the drawings) and a heating control assembly 2, wherein a brazing mold (not shown in the drawings) is disposed in the furnace body, the heating control assembly 2 includes a first electrode 21, a second electrode 22, an electric energy regulator 23 and a power supply 24, the first electrode 21 and the second electrode 22 are respectively a positive electrode and a negative electrode, and are disposed on the brazing mold and connected with two ends of a piece to be welded, and the piece to be welded, the first electrode 21, the electric energy regulator 23, the power supply 24 and the second electrode 22 form a heating circuit.

The furnace body is provided with an air inlet and outlet (not shown in the figure), the air inlet and outlet is connected with an air supply device or a negative pressure device (not shown in the figure), the brazing material 4 is welded through the heating control component 2, the temperature rising speed of the temperature of the brazing material 4 is controlled through the adjustment of the change of the passing current or voltage through the electric energy regulator 23, the required temperature can be reached by using less electric energy, and the heat utilization rate is extremely high. In the brazing process, nitrogen and inert gas are introduced into the furnace body through the air inlet and the air outlet or the negative pressure device, or the furnace body is vacuumized, so that the brazing environment in the furnace body is ensured, and the metal parts of the brazing material 4 are prevented from being oxidized in a high-temperature environment, so that the welding reliability is prevented from being influenced.

Compared with the prior ceramic brazing equipment, the utility model has the defects that the gas needs to be heated firstly and then the brazing material is heated by the gas, so that a great amount of energy loss is caused, a high-power heating device is also needed, a temperature homogenizing device is needed to ensure the uniformity of the environmental temperature in the furnace, a great amount of heat insulation materials are needed for the furnace wall, and the like.

The utility model focuses on the accurate control of heating temperature, so that the temperature detection is particularly important, and the ceramic brazing equipment further comprises a temperature detection device which can comprise a plurality of contact type temperature sensors and a plurality of non-contact type temperature sensors.

Namely, the heating control assembly 2 further comprises a contact temperature sensor (not shown in the figure), the contact temperature sensor is arranged on the brazing mold and is positioned at the position of the part to be welded and can be in direct contact with the part to be welded, the contact temperature sensor is electrically connected with the electric energy regulator 23, the temperature of the part to be welded is collected and monitored in real time through the contact temperature sensor, and if the temperature is deviated from a temperature set value, the temperature is fed back to the electric energy regulator 23 and regulated to perform temperature control.

IN this embodiment, the power regulator 23 may be a CS6-3-3V060-MPA digital display power regulator, and its IN+ terminal and IN-terminal are connected to the first electrode 21 and the second electrode 22 for controlling the current applied to the first electrode 21 and the second electrode 22, thereby controlling the heating temperature. The contact type temperature sensor adopts a thermocouple which is fastened on the brazing die and contacts with the to-be-welded piece to collect the temperature of the to-be-welded piece. Preferably, the contact type temperature sensor can be used for detecting the temperature of different positions of the piece to be welded, so that the temperature can be controlled more accurately.

Optionally, the heating control assembly further comprises a plurality of non-contact temperature sensors (such as temperature probes), and the non-contact temperature sensors are electrically connected with the electric energy regulator. The non-contact temperature sensor can adopt an infrared temperature sensor or a radiation temperature sensor, the non-contact temperature measurement can measure the surface temperature of small objects and objects with small heat capacity or rapid temperature change (transient), and the upper measurement limit is not limited by the temperature resistance degree of the temperature sensing element.

In the specific implementation, under the condition that the installation space of the brazing die allows, the contact type temperature sensor and the non-contact type temperature sensor can be used simultaneously, and the temperature of a piece to be welded can be accurately obtained through a plurality of temperature feedback, so that the electric energy regulator can better control the output power.

The power supply 24 may be one of ac power and dc power, and when the power supply 24 is a dc power supply, it uses a low dc voltage (< 36V), which is safer to use.

The ceramic brazing equipment further comprises an automatic feeding component (not shown in the figure) and an automatic discharging component (not shown in the figure), wherein the automatic feeding component is arranged at the inlet of the furnace body, the automatic discharging component is positioned at the outlet of the furnace body, automatic feeding and discharging are realized through the automatic feeding component and the automatic discharging component, when brazing of a single or certain batch of products to be brazed is finished, the products to be brazed can be transported out through the automatic discharging component, and then the products to be brazed are transported in through the automatic feeding component, so that the production period of the single products is shortened, and more intelligent production is realized. Further, the inlet and the outlet of the furnace body are respectively provided with an automatic induction door, and when the automatic feeding assembly and the automatic discharging assembly are not provided with brazing materials, the automatic induction doors are closed to ensure the gas concentration in the furnace.

In the first alternative embodiment, the piece to be welded is a connector 3, the connector 3 includes a conductive rod 31, a connector body 32, a ceramic 33, and an excessive ring 34, the conductive rod 31 and the connector body 32 are made of metal materials, and the first electrode 21 and the second electrode 22 are respectively connected with two ends of the conductive rod 31 of the connector 3 (as shown in fig. 1), so that the conductive rod 31 forms a heating electric loop (i.e. forms a heating resistor), and the conductive rod 31 is heated for brazing.

In a second alternative embodiment, the piece to be welded is a connector 3, the connector 3 includes a conductive rod 31, a connector body 32, a ceramic 33 and an excessive ring 34, the first electrode 21 and the second electrode 22 are respectively connected with two ends of the connector body 32 (as shown in fig. 2), so that the connector body 32 forms a heating electric circuit (i.e. forms a heating resistor), and the connector body 32 is used for heating and soldering.

The two connection modes can enable the connector 3 to form a heating resistor, when the connector 3 passes through current, the connector can generate heat to enable the temperature of the connector to rise, and then the current or the voltage of the connector 3 is controlled through the electric energy regulator 23, so that the purpose of controlling the temperature of the connector 3 is achieved.

In this embodiment, the number of the brazing molds is plural, the number of the heating control components 2 is one, and each brazing mold is connected with the first electrode 21 and the second electrode 22 after being connected in parallel or in series, so that the structure is suitable for the situation that the materials of the connectors 3 are the same, and the production cost is low.

In other embodiments, the number of the soldering dies and the number of the heating control components 2 are plural, and the soldering dies and the heating control components 2 are arranged in a one-to-one correspondence manner, that is, each soldering die corresponds to one heating control component 2, so that each soldering die can independently control the temperature, and the structure is suitable for materials with different heating resistances, even if a ceramic soldering device can simultaneously solder different kinds of soldering materials, the structure is suitable for different soldering temperature-time curves, and compared with the scheme of sharing the electric energy regulator 23, the control temperature precision of each heating resistor can be ensured, and therefore, soldering materials 4 with different materials or larger temperature differences can be soldered in one ceramic soldering device without mutual interference.

The brazing mold is one of a graphite mold and a metal mold, can conduct electricity and heat, is not limited herein, and when in brazing, the connector 3 is arranged in the brazing mold, the first electrode and the second electrode can be directly connected to the brazing mold, and the brazing mold is heated by introducing current, so that the brazing can be performed. Wherein the soldering mold can be placed into a plurality of connectors 3 to achieve the purpose of heating the plurality of connectors 3 at the same time.

In the third alternative embodiment, the first electrode 21 and the second electrode 22 are both connected to the brazing material 4 (see fig. 3), and since the body of the brazing material 4 is an electric conductor, the brazing material 4 can be directly supplied with current, so that the brazing material 4 can generate heat to achieve the purpose of brazing.

In an alternative embodiment, a thermal insulation layer (not numbered in the figure) is arranged between each brazing mold to prevent a plurality of different heated bodies from heating at the same time, and the thermal field influences are generated between the two brazing molds, for example, when the temperature difference between the two brazing molds is large, adverse effects on temperature measurement and electric energy adjustment can be caused, even the temperature measurement and electric energy adjustment can not be controlled.

Further, the automatic blanking assembly further comprises a cold air interface, and the cold air interface is used for filling cooling gas (such as nitrogen) into the automatic blanking assembly, so that the welding part is cooled in the blanking process. In the ceramic brazing equipment, the detection assembly is further arranged on the output side of the automatic blanking assembly and is used for carrying out leakage rate test, insulation resistance test, voltage resistance test and appearance consistency detection on welding pieces, sorting is carried out by the sorting mechanism according to detection results, rejection rate, rework rate, yield and the like are calculated, and the detection assembly is adopted for automatically sorting to replace the existing normal-temperature cooling and manual detection mode, so that the working efficiency is improved, the labor cost is saved, and the intelligent degree is high.

Further, the heating control component analyzes the type of the waste product and the reworking type, and adjusts the positions of the first electrode, the second electrode and the temperature sensor and the output power of the electric energy regulator according to the type of the waste product and the reworking type so as to improve the brazing yield.

In summary, the ceramic brazing device provided by the utility model comprises a furnace body and a heating control component, wherein the furnace body is internally provided with a brazing mold, the heating control component is used for controlling the temperature rising speed of the brazing mold by adjusting the current or voltage passing through the heating control component, and the heating temperature of each brazing mold can be different, so that brazing materials with different materials or large temperature difference can be brazed in one ceramic brazing device, the brazing materials are not interfered with each other, the required temperature can be reached by using less electric energy, the heat utilization rate is extremely high, and nitrogen or inert gas is introduced into the furnace body through an air inlet and an air outlet in the brazing process by the air supply device, so that the brazing environment in the furnace body is ensured.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.

Claims (10)

1. The utility model provides a pottery equipment of brazing, its characterized in that includes furnace body and heating control assembly, be provided with the brazing mold in the furnace body, heating control assembly includes first electrode, second electrode, electric energy regulator and power, first electrode, second electrode set up on brazing mold, are connected with the both ends of waiting to weld the piece, wait to weld piece, first electrode, electric energy regulator, power, second electrode and form and heat the electric return circuit, the furnace body has business turn over gas port.

2. The ceramic brazing apparatus according to claim 1, wherein the heat generation control assembly further comprises a contact temperature sensor disposed on the brazing mold at the part to be welded and electrically connected to the power conditioner.

3. The ceramic brazing apparatus according to claim 1 or 2, wherein the heat generation control assembly further comprises a plurality of non-contact temperature sensors electrically connected to the power conditioner.

4. The ceramic brazing apparatus of claim 1, further comprising an automatic loading assembly and an automatic unloading assembly, the automatic loading assembly being disposed at an inlet of the furnace body and the automatic unloading assembly being disposed at an outlet of the furnace body.

5. The ceramic brazing apparatus according to claim 1, wherein the member to be welded is a connector including a conductive rod, a connector body, a ceramic, and an excess ring, and the first electrode and the second electrode are connected to both ends of the conductive rod of the connector, respectively.

6. The ceramic brazing apparatus according to claim 1, wherein the member to be welded is a connector including a conductive rod, a connector body, a ceramic, and an excess ring, and the first electrode and the second electrode are connected to both ends of the connector body, respectively.

7. The ceramic brazing apparatus according to claim 5 or 6, wherein the number of the brazing molds is plural, the heat generation control member is one, and each brazing mold is connected in parallel or in series to the first electrode and the second electrode.

8. The ceramic brazing apparatus according to claim 5 or 6, wherein the plurality of brazing molds and the plurality of heat generation control members are provided in one-to-one correspondence.

9. The ceramic brazing apparatus according to claim 7, wherein an insulating layer is provided between each brazing mold.

10. The ceramic brazing apparatus according to claim 1, wherein the first electrode and the second electrode are both connected to a braze.