A vertical sintering furnace for single-ended glass-sealed thermistor

Abstract

The invention discloses a vertical sintering furnace for a single-ended glass-sealed thermistor, comprising a conveyor belt and a sintering furnace, wherein the conveyor belt surface is arranged horizontally, the sintering furnace and the conveyor belt are arranged correspondingly, a furnace chamber with a downward opening is arranged on the sintering furnace along the conveying direction of the conveyor belt, the conveyor belt is used for conveying components through the furnace chamber, the components pass through the furnace chamber in a vertical shape on the conveyor belt, and a glass shell for glass-sealing the upper end of the component is sleeved on the upper end of the component. The invention has a stable structure, a reasonable layout, and a smooth operation, and can realize vertical sintering and glass-sealing of a single end of the component, and has a good sintering and glass-sealing effect, a high degree of automation, a high processing efficiency, and good quality.

Description

Technical Field

[0001] The invention relates to the field of resistor element processing, and in particular to a vertical sintering furnace for a single-ended glass-sealed thermistor. Background Art

[0002] When sintering glass-sealed components in the single-ended glass-sealed component sintering furnace currently sold on the market, the components are placed horizontally on the sintering furnace conveyor belt, and the furnace chamber is horizontally open to the side. When the components are sintered in the furnace, the glass shell sags due to gravity, resulting in thick glass shell on the lower side and thin glass on the upper side, and asymmetric formation; in addition, similarly, the glass adhesion on the upper side lead is less and thinner, and the glass adhesion on the other side lead is relatively more. In this way, when the component leads are bent, disassembled, processed or used, the glass shell on the lead end with less glass adhesion is prone to glass shattering, or even glass shell rupture, causing the resistance value of the single-ended component to change and the reliability to decrease, posing a major quality risk. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a single-ended glass-sealed thermistor vertical sintering furnace, which can make the vertical components with glass shells continuously pass through the furnace with the opening facing downward to achieve the function of vertical sintering. During sintering, the glass shells naturally shrink into symmetrical rugby-shaped glass shells under the action of gravity and surface tension. The glass shells are symmetrically formed, the thickness of the glass adhered to the two leads of the component is uniform and thickened due to the sagging of the glass, which further strengthens the glass strength of the lead end. When the lead of the component is bent and pulled, the glass shell is not likely to break, and the sintering effect is high and the quality is good.

[0004] In order to achieve the above object, the present invention proposes the following technical solutions:

[0005] A vertical sintering furnace for a single-ended glass-sealed thermistor comprises a conveyor belt and a sintering furnace. The conveyor belt surface is arranged horizontally, and the sintering furnace and the conveyor belt are arranged correspondingly. A furnace chamber opening downward is arranged on the sintering furnace along the conveying direction of the conveyor belt. The conveyor belt is used to convey components through the furnace chamber. The components pass through the furnace chamber in a vertical shape on the conveyor belt. The upper end of the component is sleeved with a glass shell for glass-sealing the upper end of the component.

[0006] Preferably: a clamping mechanism is installed on the conveyor belt, the clamping mechanisms are arranged at intervals along the conveying direction of the conveyor belt, and the clamping mechanisms are used to maintain the components in a vertical shape while passing through the furnace;

[0007] Through the above technical solution, the clamping function of the component is realized, so that the component can maintain an upright shape and pass through the furnace.

[0008] Preferably: the clamping mechanism comprises a supporting assembly and a clamping member, the supporting assembly is fixedly mounted on the conveyor belt, the clamping member is used to clamp the lower end support of the element to maintain the element in a vertical shape, and the clamping member is detachably mounted on the supporting assembly;

[0009] Through the above technical solution, it is possible to first clamp the component in a vertical shape in the clamping member and then assemble it into the supporting assembly, which is convenient for loading and operation.

[0010] Preferably, the clamping member is a plate-shaped member, a slot is provided on one side of the clamping member, the length direction of the slot is consistent with the length direction of the clamping member, and the element leg is clamped in the slot;

[0011] Through the above technical solution, the function of clamping the component in the clamping slot is realized, and the component clamping is simple and quick.

[0012] Preferably: the support assembly comprises a support groove, the direction of the support groove is consistent with the conveying direction of the conveyor belt, the support groove matches the clamping member, and the support groove is used to maintain the clamping member in a vertical state with the clamping groove facing upward;

[0013] Through the above technical solution, the clamping part can be assembled on the support assembly by simply placing it in the support groove, and loading is simple and convenient.

[0014] Preferably: two support grooves are provided at the same length of the conveyor belt, and the two support grooves are arranged at intervals along the width of the conveyor belt; two furnaces are provided, and the two support grooves at the same length of the conveyor belt are arranged correspondingly;

[0015] The sintering efficiency is improved by the above technical solution.

[0016] Preferably: the support assembly comprises a strip plate, the strip plate is mounted on the conveyor belt, the strip plate is arranged along the width direction of the conveyor belt, vertical plates are mounted at both ends of the strip plate, a horizontal plate is mounted at the upper end of the vertical plate, the length direction of the horizontal plate is consistent with the conveying direction of the conveyor belt, a limit plate is arranged on one side of the horizontal plate, the limit plate and the horizontal plate are spaced and arranged in parallel, the lower end of the limit plate is fixedly mounted on the horizontal plate by bolts, and the support groove is composed of the area enclosed by the limit plate, the horizontal plate and the bolts;

[0017] Through the above technical solution, the composition of the support-like components is realized, the support components are simple to assemble, and the inspection and modification are convenient.

[0018] Preferably: a feeding mechanism is installed on the upper side of the feeding end of the conveyor belt, and two groups of feeding mechanisms are provided. The two groups of feeding mechanisms are arranged corresponding to two supporting grooves at the same length of the conveyor belt, and the feeding mechanism is used to load the clamping parts with components into the passing supporting groove;

[0019] Through the above technical solution, the automatic feeding function is realized.

[0020] Preferably: the feeding mechanism comprises a feeding trough, the length direction of the feeding trough is consistent with the width direction of the conveyor belt, one end of the feeding trough is arranged above the corresponding supporting trough, and the other end of the feeding trough extends to the outside of the conveyor belt, a feeding opening for the clamping member to fall through is opened at the position of the bottom of the feeding trough corresponding to the supporting trough, the clamping members are arranged in a vertical shape in sequence in the feeding trough, a pushing assembly is installed in the feeding trough, the pushing assembly is used to drive the clamping member to move toward the feeding opening, a feeding assembly is installed above the feeding trough, and the feeding assembly is used to press the clamping member in the feeding opening into the supporting trough when the supporting trough moves to the position below the feeding opening;

[0021] Through the above technical solution, when the support groove passes through the material distributing port, the clamping member in the material distributing groove can be pressed into the support groove, thereby realizing the automatic feeding function.

[0022] Preferably: the pushing assembly comprises a pushing plate and a spring, the expansion and contraction direction of the spring is consistent with the length direction of the feeding groove, one end of the spring is mounted on the inner wall of the groove end of the feeding groove away from the feeding opening, the other end of the spring is connected to the pushing plate, the pushing plate abuts against the clamping member, and the spring applies an elastic force pointing to the feeding opening to the clamping member through the pushing plate;

[0023] Through the above technical solution, the clamping parts can be driven to move toward the material dispensing opening in sequence, thereby achieving the purpose of sequential material feeding.

[0024] Preferably: the feeding assembly includes a pressing plate, which is arranged at the upper end of the material distributing groove, the position of the pressing plate corresponds to the position of the material distributing opening, the pressing plate is connected to the cylinder, the cylinder is used to drive the pressing plate downward, the pressing plate moves downward against the clamping member, and the clamping member is pressed into the material distributing groove, and the pressing plate does not interfere with other mechanisms and components when pressing downward;

[0025] Through the above technical solution, the function of pressing the clamping member into the supporting groove is realized, and the operation is stable, safe and reliable.

[0026] Preferably: the feeding assembly further includes a control assembly, the control assembly includes a detection probe, the detection probe is arranged on one side of the conveyor belt, the detection probe is triggered when the support groove moves below the cloth opening, the detection probe is connected to the controller, the controller controls the cylinder to start, the cylinder drives the pressing plate downward, and presses the clamping piece into the support groove;

[0027] Through the above technical solution, it is possible to detect the moving position of the support groove, control the feeding, achieve coordinated work, and ensure stable feeding.

[0028] Preferably: rubber guide wheels are arranged on the side walls on both sides of the cloth opening to prevent the clamping piece from slipping off, and when the pressing plate presses down the clamping piece, the clamping piece abuts against and squeezes through the rubber guide wheels;

[0029] Through the above technical solution, the clamping part is prevented from falling due to its own gravity, and will only fall under pressure, thereby achieving stable loading.

[0030] The technical effects and advantages of the present invention are as follows: the vertical components with glass shells can be continuously passed through the furnace with the opening facing downward to realize the vertical sintering function, with high sintering effect and good quality, and can realize continuous feeding and sintering, with high automation and high processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a schematic structural diagram of a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0032] Figure 2 The present invention is a schematic structural diagram of a clamping member and components in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0033] Figure 3 A schematic top view of a clamping member in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0034] Figure 4 A schematic diagram of the structure of a support assembly in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0035] Figure 5 The present invention is a schematic structural diagram of a material distribution trough in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0036] Figure 6 The present invention is a schematic structural diagram of a detection probe in a vertical sintering furnace of a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0037] Figure 7 The present invention is a schematic structural diagram of a rubber guide wheel in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0038] Figure 8 The present invention is a schematic structural diagram of a component in a vertical sintering furnace for a single-ended glass-sealed thermistor according to an embodiment of the present invention.

[0039] Explanation of reference numerals: 100 - conveyor belt, 200 - clamping mechanism, 210 - clamping piece, 211 - slot, 220 - support assembly, 221 - support slot, 222 - strip, 223 - vertical plate, 224 - horizontal plate, 225 - limit plate, 300 - feeding mechanism, 310 - material distribution slot, 311 - material distribution port, 320 - pushing assembly, 321 - pushing plate, 322 - spring, 330 - pressure plate, 340 - cylinder, 350 - detection probe, 360 - rubber guide wheel, 400 - sintering furnace, 410 - furnace, 500 - element, 510 - glass shell. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example

[0041] The following is combined with Figure 1-8 Further detailed description of the present invention:

[0042] Reference Figure 1 and Figure 8 A vertical sintering furnace for a single-ended glass-sealed thermistor includes a conveyor belt 100 and a sintering furnace 400. The conveyor belt 100 is arranged horizontally, and the sintering furnace 400 and the conveyor belt 100 are arranged correspondingly. A furnace chamber 410 opening downward is provided on the sintering furnace 400 along the conveying direction of the conveyor belt 100. The conveyor belt 100 is used to convey a component 500 through the furnace chamber 410. The component 500 passes through the furnace chamber 410 in a vertical shape on the conveyor belt 100. A glass shell 510 for glass-sealing the upper end of the component 500 is sleeved on the upper end of the component 500. The conveyor belt 100 is provided to realize the function of conveying the component 500. The component 500 passes through the furnace 410 of the sintering furnace in a vertical position on the conveyor belt 100. An electric heating rod is installed in the side wall of the furnace 410. The glass shell 510 on the component is sleeved on the upper end of the component 500. During sintering, the glass shell naturally shrinks into a symmetrical rugby-shaped glass shell under the action of gravity and surface tension. The glass shell is symmetrically formed. The thickness of the glass adhered to the two leads of the component 500 is uniform and thickened due to the sagging of the glass, which further strengthens the glass strength at the lead end. When the lead of the component is bent and pulled, the glass shell is not easy to break.

[0043] The conveyor belt 100 is provided with a clamping mechanism 200, which is arranged at intervals along the conveying direction of the conveyor belt 100. The clamping mechanism 200 is used to maintain the component 500 in a vertical position while passing through the furnace 410. The clamping mechanism 200 is provided to clamp the component 500, so that the component can pass through the furnace in a vertical position, thereby realizing the function of vertical sintering. The intermittent arrangement of multiple clamping mechanisms 200 realizes continuous sintering processing.

[0044] The clamping mechanism 200 includes a support assembly 220 and a clamping member 210. The support assembly 220 is fixedly mounted on the conveyor belt 100. The clamping member 210 is used to clamp the lower end support of the element 500 to maintain the element 500 in a vertical position. The clamping member 210 is detachably mounted on the support assembly 220. The element is clamped and fixed by the arrangement of the clamping member 210. When in use, the element 500 is first installed in a vertical position into the clamping member, and the elements are arranged in a single row in the clamping member. Then, the clamping member 210 is installed on the support assembly to realize the clamping and feeding function.

[0045] The clamping member 210 is a plate-shaped member, and a slot 211 is provided on one side of the clamping member 210. The length direction of the slot 211 is consistent with the length direction of the clamping member 210, and the legs of the component 500 are clamped in the slot 211. Through the arrangement of the slot 211, when loading, the legs of the component 500 are first inserted into the slot 211 one by one, and the slot 211 clamps the legs, and the components 500 are arranged one by one along the slot 211, which is convenient for subsequent sintering processing, simple loading, and convenient operation.

[0046] The support assembly 220 includes a support groove 221, the groove direction of the support groove 221 is consistent with the conveying direction of the conveyor belt 100, the support groove 221 matches the clamping member 210, and the support groove 221 is used to maintain the clamping member 210 in a standing state with the clamping groove 211 facing upward. When loading the clamping member 210 into the support assembly 220, it is only necessary to stand the clamping member 210 upright and insert it into the support groove 221, and the assembly is quick and simple.

[0047] There are two support grooves 221 at the same length of the conveyor belt 100, and the two support grooves 221 are arranged at intervals along the width of the conveyor belt 100. There are two furnaces 410, and the two furnaces 410 are arranged correspondingly to the two support grooves 221 at the same length of the conveyor belt 100. The sintering efficiency is improved by setting the two furnaces 410 and the corresponding support grooves 221.

[0048] The support assembly 220 includes a strip 222, which is installed on the conveyor belt 100, and is arranged along the width direction of the conveyor belt 100. Vertical plates 223 are installed at both ends of the strip 222, and a horizontal plate 224 is installed at the upper end of the vertical plate 223. The length direction of the horizontal plate 224 is consistent with the conveying direction of the conveyor belt 100. A limit plate 225 is arranged on one side of the horizontal plate 224. The limit plate 225 and the horizontal plate 224 are spaced and parallel. The lower end of the limit plate 225 is fixedly installed on the horizontal plate 224 by bolts, and the support groove 221 is composed of the limit plate 225 and the horizontal plate 224 and the area enclosed by the bolts. Through the above arrangement, the support assembly 220 is composed of various plate parts, which is simple to assemble, low in cost, and convenient for assembly and intermittent modification.

[0049] A loading mechanism 300 is installed on the upper side of the feeding end of the conveyor belt 100. There are two groups of loading mechanisms 300. The two groups of loading mechanisms 300 are arranged corresponding to two supporting grooves 221 at the same length of the conveyor belt 100 respectively. The loading mechanism 300 is used to load the clamping part 210 equipped with the component 500 into the passing supporting groove 221. The feeding mechanism 300 includes a feeding trough 310, the length direction of the feeding trough 310 is consistent with the width direction of the conveyor belt 100, one end of the feeding trough 310 is arranged above the corresponding support groove 221, and the other end of the feeding trough 310 extends to the outside of the conveyor belt 100, and a feeding port 311 for the clamping member 210 to fall through is opened at the position of the bottom of the feeding trough 310 corresponding to the support groove 221, and the clamping member 210 is arranged in a vertical shape in the feeding trough 310 in sequence, and a pushing assembly 320 is installed in the feeding trough 310, and the pushing assembly 320 is used to drive the clamping member 210 to move toward the feeding port 311, and a feeding assembly is installed above the feeding trough 310, and the feeding assembly is used to press the clamping member 210 in the feeding port 311 into the support groove 221 when the support groove 221 moves to the position below the feeding port 311. The push assembly 320 includes a push plate 321 and a spring 322. The direction of expansion and contraction of the spring 322 is consistent with the direction of the length of the feeding groove 310. One end of the spring 322 is installed on the inner wall of the groove end of the feeding groove 310 away from the feeding port 311. The other end of the spring 322 is connected to the push plate 321. The push plate 321 abuts against the clamping member 210. The spring 322 applies an elastic force pointing to the feeding port 311 to the clamping member 210 through the push plate 321. The feeding assembly includes a pressing plate 330. The pressing plate 330 is arranged at the upper end of the feeding groove 310. The position of the pressing plate 330 corresponds to the position of the feeding port 311. The pressing plate 330 is connected to the cylinder 340. The cylinder 340 is used to drive the pressing plate 330 downward. The pressing plate 330 descends and abuts against the clamping member 210 to press the clamping member 210 into the feeding groove 310. When the pressing plate 330 is pressed downward, it does not interfere with other mechanisms and components. The feeding assembly also includes a control assembly, which includes a detection probe 350, which is arranged on one side of the conveyor belt 100. When the support groove 221 moves below the material dispensing port 311, the detection probe 350 is triggered. The detection probe 350 is connected to a controller, and the controller controls the cylinder 340 to start. The cylinder 340 drives the pressing plate 330 downward to press the clamping member 210 into the support groove 221. Rubber guide wheels 360 are provided on the side walls on both sides of the material dispensing port 311 to prevent the clamping member 211 from slipping. When the pressing plate 330 presses down the clamping member 210, the clamping member 210 is pressed against and squeezed through the rubber guide wheels 360.

[0050] When the present invention is in use, firstly, the component 500 is inserted into the clamping member 210, and the component 500 is inserted into the card slot 211. The component is arranged in the middle section of the card slot 211, and the components 500 are not arranged at both ends of the card slot 211 to prevent the pressing plate 330 from pressing the component when it moves downward. Both ends of the pressing plate 330 are provided with extended abutment parts. When the pressing plate 330 moves downward, the extended abutment parts at both ends of the pressing plate 330 abut against the end faces of the card slot 211 without the component 500. Then, the clamping member 210 loaded with the component 500 is arranged and installed in the material distribution groove 310, and the pushing plate 321 abuts against the clamping member 210. When the conveyor belt 100 is started and the support assembly 220 moves to the bottom of the material distribution groove 310, the support assembly 220 triggers the detection probe 350. The detection probe 350 is an optical probe, and the support component 220 blocks the light of the optical probe to trigger it to generate a signal. The signal is transmitted to the controller, which is a single-chip microcomputer. The single-chip microcomputer controls the air supply mechanism to supply air to the cylinder 340. The cylinder 340 starts to drive the pressing plate 330 downward. When the pressing plate 330 moves downward, it abuts against the clamping piece 210 at the material dispensing port 311, and presses the clamping piece 210 downward. The clamping piece 210 abuts against the rubber guide wheels 360 at both ends of the material dispensing port 311, and passes through. The clamping piece 210 falls into the supporting groove 221 to realize the loading work, and then the conveyor belt 100 continues to move, with the clamping piece 210 passing through the furnace 410, and the furnace 410 heats and sinters the glass shell on the component 500 to realize the sintering glass sealing of the upper end of the component 500.

[0051] The invention has a stable structure, a reasonable layout, and a smooth operation, and can realize vertical sintering and glass sealing of a single end of a component, has a good sintering and glass sealing effect, a high degree of automation, a high processing efficiency, and good quality.

[0052] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A vertical sintering furnace for single-ended glass-sealed thermistor, characterized in that: The invention comprises a conveyor belt (100) and a sintering furnace (400), wherein the conveyor belt (100) is arranged with its belt surface horizontally, and the sintering furnace (400) and the conveyor belt (100) are arranged correspondingly, and a furnace chamber (410) opening downward is arranged on the sintering furnace (400) along the conveying direction of the conveyor belt (100); the conveyor belt (100) is used to convey the component (500) through the furnace chamber (410); the component (500) passes through the furnace chamber (410) in a vertical position on the conveyor belt (100); and a glass shell (510) for sealing the upper end of the component (500) is sleeved on the upper end of the component (500); The conveyor belt (100) is provided with a clamping mechanism (200), the clamping mechanism (200) comprising a supporting assembly (220) and a clamping member (210), the supporting assembly (220) being fixedly mounted on the conveyor belt (100), the clamping member (210) being used for clamping the lower end support leg of the element (500) to maintain the element (500) in a vertical position, and the clamping member (210) being detachably mounted on the supporting assembly (220); the clamping member (210) being a plate-shaped member, a clamping groove (211) being provided on one side of the clamping member (210), the groove length direction of the clamping groove (211) being consistent with the length direction of the clamping member (210), and the support leg of the element (500) being clamped in the clamping groove (211); A loading mechanism (300) is installed on the upper side of the feeding end of the conveyor belt (100), and two groups of loading mechanisms (300) are provided. The two groups of loading mechanisms (300) are arranged corresponding to two support grooves (221) at the same length of the conveyor belt (100), and the loading mechanism (300) is used to load a clamping member (210) equipped with a component (500) into the passing support groove (221); The feeding mechanism (300) comprises a material distributing trough (310), wherein the length direction of the material distributing trough (310) is consistent with the width direction of the conveyor belt (100), one trough end of the material distributing trough (310) is arranged above the corresponding support trough (221), and the other trough end extends toward the outside of the conveyor belt (100), and a material distributing opening (311) for the clamping member (210) to fall through is provided at a position of the bottom of the material distributing trough (310) corresponding to the support trough (221), and the clamping member (210) The components are arranged in a vertical position in the material distributing groove (310). A material pushing assembly (320) is installed in the material distributing groove (310). The material pushing assembly (320) is used to drive the clamping member (210) to move toward the material distributing opening (311). A material loading assembly is installed above the material distributing groove (310). The material loading assembly is used to press the clamping member (210) in the material distributing opening (311) into the supporting groove (221) when the supporting groove (221) moves to a position below the material distributing opening (311).

2. A vertical sintering furnace for single-ended glass-sealed thermistor according to claim 1, characterized in that: The clamping mechanisms (200) are arranged at intervals along the conveying direction of the conveyor belt (100), and the clamping mechanisms (200) are used to maintain the component (500) in a vertical position to pass through the furnace (410).

3. A vertical sintering furnace for single-ended glass-sealed thermistor according to claim 1, characterized in that: The support assembly (220) comprises a support groove (221), the groove direction of the support groove (221) is consistent with the conveying direction of the conveyor belt (100), the support groove (221) matches the clamping member (210), and the support groove (221) is used to maintain the clamping member (210) in a standing state with the clamping groove (211) facing upwards.

4. A vertical sintering furnace for single-ended glass-sealed thermistor according to claim 3, characterized in that: Two support grooves (221) are provided at the same length of the conveyor belt (100), and the two support grooves (221) are arranged at intervals along the width of the conveyor belt (100). Two furnaces (410) are provided, and the two support grooves (221) at the same length of the conveyor belt (100) are arranged correspondingly.

5. A vertical sintering furnace for single-ended glass-sealed thermistor according to claim 4, characterized in that: The support assembly (220) comprises a strip plate (222), the strip plate (222) being mounted on the conveyor belt (100), the strip plate (222) being arranged along the width direction of the conveyor belt (100), vertical plates (223) being mounted at both ends of the strip plate (222), a horizontal plate (224) being mounted at the upper end of the vertical plate (223), the length direction of the horizontal plate (224 being consistent with the conveying direction of the conveyor belt (100), a limiting plate (225) being arranged on one side of the horizontal plate (224), the limiting plate (225) and the horizontal plate (224) being arranged in parallel with each other at intervals, the lower end of the limiting plate (225) being fixedly mounted on the horizontal plate (224) by bolts, and the support groove (221) being composed of the limiting plate (225), the horizontal plate (224) and the area enclosed by the bolts.

6. A vertical sintering furnace for single-ended glass-sealed thermistor according to claim 1, characterized in that: The push assembly (320) comprises a push plate (321) and a spring (322). The expansion and contraction direction of the spring (322) is consistent with the length direction of the material distributing groove (310). One end of the spring (322) is mounted on the inner wall of the groove end of the material distributing groove (310) away from the material distributing opening (311). The other end of the spring (322) is connected to the push plate (321). The push plate (321) abuts against the clamping member (210). The spring (322) applies an elastic force directed toward the material distributing opening (311) to the clamping member (210) through the push plate (321).

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