CN215448801U

CN215448801U - Bending strength testing device

Info

Publication number: CN215448801U
Application number: CN202121503954.6U
Authority: CN
Inventors: 许倍强; 雷伟
Original assignee: Himile Mechanical Manufacturing Co Ltd
Current assignee: Himile Mechanical Manufacturing Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-07
Anticipated expiration: 2031-07-01

Abstract

The present application provides a bending strength inspection device; the device comprises a base, supporting seats and a pressure head assembly, wherein the supporting seats are provided with at least two supporting wheels which are arranged at intervals, a concave supporting part is formed between the outer circumferential surfaces of the two adjacent supporting wheels, the supporting parts are used for supporting a workpiece and driving the workpiece to rotate around the axis of the workpiece, and the at least two supporting seats are arranged on the base at intervals; the pressure head assembly comprises a telescopic mechanism and a pressure head connected with the tail end of the telescopic mechanism, and a pressure wheel for applying thrust to the workpiece in the radial direction is arranged on the pressure head; the supporting part formed by the supporting wheels supports the workpiece with the outer circumferential surface, for example, the pipe, the bar and the like, a self-positioning structure can be formed between the two supporting wheels, and the supporting wheels rotate to drive the workpiece to rotate around the axis, so that the rotating position of the workpiece in the checking process is convenient to adjust, and the positioning precision after adjustment is ensured.

Description

Bending strength testing device

Technical Field

The application relates to the field of inspection equipment, in particular to a bending strength inspection device.

Background

Before the industrial product is put into use, relevant tests must be carried out to meet corresponding technical standards, such as yield strength tests, bending strength tests and the like.

Corresponding tests are also carried out on products with cylindrical appearance, such as pipes, bars and the like; taking the sintered silicon carbide tube as an example, the bending strength test is required before the sintered silicon carbide tube is put into use so as to meet the requirement of subsequent use. The pipe fitting is basically pressed manually in the inspection, so that the pipe fitting is bent to a certain degree, whether the pipe fitting is qualified is inspected, the inspection result is not accurate enough, the standards are inconsistent, the operation is complex, and the efficiency is low; the conventional bending strength inspection equipment adopts a mode of supporting at two ends and applying pressure at the middle part, the position of a workpiece to be inspected needs to be adjusted by rotating for many times so as to meet the requirement of multiple bending strength inspection, but the adjustment efficiency is low, and the secondary positioning precision is poor after adjustment, so that the pressure application position is deviated, and the precision of the bending strength inspection is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the defect that prior art exists, provides a bending strength verifying attachment, supports cylindric work piece through the supporting part that the supporting wheel formed, when forming from location structure, the supporting wheel rotation can drive the work piece around the axis rotation to make things convenient for the rotational position adjustment in the work piece testing process.

In order to realize the purpose, the following technical scheme is adopted:

a bending strength testing device comprises a base, supporting seats and a pressure head assembly, wherein at least two supporting seats are arranged on the base at intervals, at least two supporting wheels are arranged on each supporting seat at intervals, a concave supporting part is formed between the outer circumferential surfaces of every two adjacent supporting wheels, and each supporting part is used for supporting a workpiece and driving the workpiece to rotate around the axis of the workpiece; the pressure head assembly comprises a telescopic mechanism and a pressure head connected with the tail end of the telescopic mechanism, and a pressure wheel used for applying thrust to the workpiece in the radial direction is arranged on the pressure head.

Further, the pressure head assembly is installed on the base through a fixing frame, the telescopic mechanism comprises an air cylinder and a sliding rail and sliding block mechanism, the air cylinder is installed on the fixing frame through the sliding rail and sliding block mechanism, and the pressure head is installed at the output end of the air cylinder.

Furthermore, a screw mechanism is mounted on the fixed frame, and the screw mechanism is connected with the sliding rail and sliding block mechanism and used for driving the air cylinder to move relative to the fixed frame.

Furthermore, the pressure head comprises two support arms, the pressing wheels are arranged at the tail ends of the support arms, and the two pressing wheels are arranged at intervals and used for jointly contacting and abutting against the workpiece.

Furthermore, at least one supporting wheel of the supporting seat is connected with a driving mechanism, and the driving mechanism is used for driving the supporting wheel to rotate so as to drive the workpiece to rotate around the axis.

Furthermore, the base is further provided with an ejector plate and a material receiving plate, the ejector plate is installed on one side of the end face of the supporting wheel through an ejection telescopic rod, and the top face of the ejector plate is provided with an inclined face used for ejecting the workpiece from the supporting portion and guiding the workpiece to roll to the material receiving plate.

Furthermore, the material receiving plate is arranged on one side of the supporting seat, which corresponds to the lower inclined surface of the ejection plate, and when the ejection telescopic rod is located at the lowest position, the ejection plate is integrally located below the supporting part to avoid the workpiece.

Further, the supporting seats are slidably mounted on a preset guide rail of the base, and at least two supporting seats are used for contacting and supporting the workpiece.

Furthermore, an adjusting bolt is installed on the supporting seat and used for locking or unlocking the position of the supporting seat on the base.

Further, install the storage plate on the base, storage plate one end extends to the supporting part top, and the other end bends and forms the backstop.

Compared with the prior art, the application has the advantages and positive effects that:

(1) the supporting part formed by the supporting wheels supports the workpiece with the outer circumferential surface, for example, the pipe, the bar and the like, a self-positioning structure can be formed between the two supporting wheels, and the supporting wheels rotate to drive the workpiece to rotate around the axis, so that the rotating position of the workpiece in the checking process is convenient to adjust, and the positioning precision after adjustment is ensured.

(2) The pressing head is used for applying pressure to the workpiece in the radial direction to realize the detection of the bending strength of the workpiece, the pressing head is provided with the pressing wheel structure, the pressing wheel is in contact with the workpiece to form linear contact, and when the workpiece rotates, the pressing wheel can also rotate to maintain the linear contact state with the workpiece, so that the effect of stably applying pressure in the detection process is realized.

(3) The pressure head position adopts two pinch roller structures, applys pressure to the work piece from a plurality of positions to can inject the work piece position through the application of force position of two wheels, avoid deviating from of work piece among the inspection process, improve inspection process's stability.

(4) The telescopic mechanism is a two-stage telescopic structure formed by combining an air cylinder with a sliding rail and sliding block mechanism, the air cylinder structure is adopted to drive the pressing head to pre-press the workpiece, and then the sliding rail and sliding block mechanism is used to drive the feeding and pressing, so that the workpiece is deformed, and the requirement of bending strength inspection is met.

(5) The ejection plate with the inclined top surface is arranged, the ejection plate avoids the position of the workpiece in a non-working state, and after the bending strength of the workpiece is inspected, the workpiece is pushed to separate from the supporting part, and is guided to enter the material receiving plate, so that the material discharging of the inspected workpiece is completed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the overall structure of a testing device in embodiment 1 of the present application;

FIG. 2 is a schematic front view of a testing device in embodiment 1 of the present application;

FIG. 3 is a schematic side view of the test device of example 1 of the present application;

FIG. 4 is a schematic view of the overall structure of a pressure head assembly in embodiment 1 of the present application;

FIG. 5 is a schematic side view of a pressure head assembly according to embodiment 1 of the present application;

fig. 6 is a schematic view of the overall structure of the support seat in embodiment 1 of the present application;

fig. 7 is a schematic side view of a supporting seat in embodiment 1 of the present application.

In the figure, 1 base, 2 pressure head components, 3 supporting seats, 4 electrical control boxes, 5 silicon carbide tubes, 201 fixing frames, 202 sliding rail and sliding block mechanisms, 203 lead screw mechanisms, 204 air cylinder supports, 205 air cylinders, 206 sliding plates, 207 pressure heads, 208 pressure wheels, 301 adjusting bolts, 302 ejection telescopic rods, 303 supporting wheels, 304 supporting parts, 305 driving mechanisms, 306 ejection plates and 307 material receiving plates.

Detailed Description

Example 1

In an exemplary embodiment of the present application, a bending strength verifying apparatus is provided as shown in fig. 1 to 7.

In order to realize the bending strength test of a cylindrical workpiece, taking the sintered silicon carbide tube 5 as an example of the bending strength test of the workpiece, the bending strength test device is provided and mainly comprises a base 1, a supporting seat 3 and a pressure head assembly 2, wherein an electric control box 4 is further arranged on one side of the base 1 for controlling the actions of the pressure head assembly 2 and the supporting seat 3, and the actions of the pressure head assembly 2 and the supporting seat 3 are controlled through internal electric elements.

As shown in fig. 1-3, the base 1 is a main body bearing structure, the supporting seat 3 and the pressing head assembly 2 are respectively installed on the base 1, the supporting seat 3 is used for contacting and supporting a workpiece, and the pressing head assembly 2 can compress the workpiece supported by the supporting seat 3 and push the workpiece to deform, so that the bending strength inspection is realized.

The supporting seats 3 are provided with at least two supporting wheels 303 arranged at intervals, a concave supporting part 304 is formed between the outer circumferential surfaces of the two adjacent supporting wheels 303, the supporting part 304 is used for supporting a workpiece and driving the workpiece to rotate around the axis of the workpiece, and the at least two supporting seats 3 are arranged on the base 1 at intervals and used for supporting the workpiece in multiple positions.

With reference to fig. 4 and 5, the pressure head assembly 2 is located above the supporting seat 3, the pressure head assembly 2 is installed on the base 1 through the fixing frame 201, the pressure head assembly 2 includes a telescopic mechanism and a pressure head 207 connected to the tail end of the telescopic mechanism, and a pressure wheel 208 for applying thrust to the workpiece in the radial direction is arranged on the pressure head 207.

The pressing wheel 208 is rotatably arranged on the pressing head 207 and can rotate around the axis thereof under the action of external force; in actual operation, the pressing wheel 208 contacts and presses against the side of the workpiece, and when the workpiece rotates, the pressing wheel 208 can also rotate under the action of the workpiece.

The telescopic mechanism comprises an air cylinder 205 and a sliding rail sliding block mechanism 202, the air cylinder 205 and the sliding rail sliding block mechanism 202 form a two-stage telescopic mechanism, the air cylinder 205 is installed on the fixed frame 201 through the sliding rail sliding block mechanism 202, the pressure head 207 is installed at the output end of the air cylinder 205, the air cylinder 205 can respond quickly, and the sliding rail sliding block mechanism 202 can stably apply pressure.

The telescopic mechanism is a two-stage telescopic structure formed by combining the air cylinder 205 with the sliding rail and sliding block mechanism 202, the air cylinder 205 structure driving pressure head 207 is adopted to pre-press the workpiece, and then the sliding rail and sliding block mechanism 202 is driven to feed and press the workpiece, so that the workpiece is deformed, and the requirement of bending strength inspection is met.

For the driving of the sliding rail and sliding block mechanism 202, the lifting driving element is matched with the screw rod mechanism 203 to realize the driving, the screw rod mechanism 203 is installed on the fixed frame 201, the screw rod mechanism 203 is connected with the sliding block part of the sliding rail and sliding block mechanism 202, and when the screw rod mechanism rotates, the sliding block is driven to move along the sliding rail and is used for driving the air cylinder 205 to reciprocate relative to the fixed frame 201;

the lifting driving element can be an existing torque output element such as a stepping motor, and the screw rod mechanism 203 is driven to act through output torque, so that the sliding block is driven to move axially along the screw rod, the sliding block of the sliding block mechanism 202 is driven to reciprocate along the sliding rail, and the requirement for adjusting the position of the air cylinder 205 is met.

Specifically, the pressure head assembly 2 is mounted on the base 1 through a vertically movable fixing frame 201, a guide rail capable of moving up and down is arranged on the fixing frame 201, a ram is arranged on the guide rail, and a screw rod structure is arranged on the ram, so that the position of the ram relative to the fixing frame 201 can be adjusted on the guide rail.

The ram is provided with an air cylinder bracket 204, and the air cylinder bracket 204 is matched with the ram to form a sliding rail and sliding block mechanism 202; the air cylinder bracket 204 is provided with a pressing air cylinder 205 and a pressure head 207 positioning device, the positioning device can be a sliding plate 206, the sliding plate 206 is matched with a guide post, the guide post is fixedly connected with the air cylinder bracket 204, and the end part of the pressing air cylinder 205 is provided with the pressure head 207.

The pressure is applied to the workpiece in the radial direction through the pressure head 207, the bending strength of the workpiece is tested, the pressure head 207 is provided with the pressure wheel 208 structure, the pressure wheel 208 is in contact with the workpiece to form line contact, the workpiece rotates, and meanwhile, the pressure wheel 208 can also rotate to maintain the line contact state with the workpiece, and the effect of stably applying the pressure in the testing process is achieved.

The ram 207 includes two arms with the press wheels 208 mounted on the ends of the arms, the two press wheels 208 being spaced apart for contacting and pressing against the workpiece together.

In this embodiment, the pressing head 207 has a V-shaped structure, the pressing wheels 208 are installed on two sides of the V-shaped structure, the pressing wheels 208 can rotate, and the pressing wheels 208 can be located on two sides of the silicon carbide tube 5 to be tested.

The position of the pressure head 207 adopts a structure of two pressure wheels 208, pressure is applied to the workpiece from a plurality of positions, the position of the workpiece can be limited through the force application positions of the two wheels, the workpiece is prevented from falling off in the inspection process, and the stability of the inspection process is improved.

For the supporting seat 3 structure, at least one of the supporting seats 3 is slidably mounted on a preset guide rail of the base 1, so that the supporting seat is suitable for workpieces with different inspection requirements and different length specifications, and at least two supporting seats 3 are used for contacting and supporting the workpieces and stably supporting the workpieces from multiple positions.

Specifically, referring to fig. 1 and 2, the supporting seat 3 is an adjusting supporting wheel 303 seat, the base 1 is provided with a track along the axial direction of the detection tube, the track is provided with an adjusting supporting wheel 303 seat capable of moving along the track, the adjusting supporting wheel 303 seat is provided with a limiting adjusting mechanism, the adjusting mechanism is provided with an adjusting bolt 301, the fixing position of the adjusting bolt can be adjusted on the track of the base 1, and the position of the supporting seat on the base 1 can be locked or unlocked through the adjusting bolt 301.

At least one supporting wheel 303 of the supporting seat 3 is in butt joint with a driving mechanism, and the driving mechanism is used for driving the supporting wheel 303 to rotate so as to drive the workpiece to rotate around the axis.

The adjustment supporting wheel 303 seat portion sets up in the both sides of pressure head subassembly 2, supports and respectively is provided with two supporting wheels 303 that the external diameter is the same on the adjustment wheel seat portion, is equipped with actuating mechanism on one of them of two supporting wheels 303, actuating mechanism is power rotating part, and power rotating part is equipped with the motor and provides power, waits to examine carborundum pipe 5 and is located between two supporting wheels 303.

The supporting portion 304 formed by the supporting wheels 303 supports a workpiece with an outer circumferential surface, such as a pipe, a bar and the like, a self-positioning structure can be formed between the two supporting wheels 303, and the supporting wheels 303 rotate to drive the workpiece to rotate around an axis, so that the rotating position of the workpiece in the checking process can be adjusted conveniently, and the adjusted positioning accuracy is ensured.

As shown in fig. 3, the supporting portion 304 is a concave space between the two supporting wheels 303, and is a structure with a large upper opening facing the ram assembly 2, a small lower opening facing the ram assembly, and a gap between the two supporting wheels 303. It will be appreciated that the diameter of the workpiece being inspected is greater than the minimum spacing between the two support wheels 303, preventing the workpiece from falling out of the gap between the two support wheels 303; the maximum diameter of the workpiece to be inspected is based on the fact that the workpiece can be stably prevented from being between the two support wheels 303.

After the workpiece is placed on the supporting part 304 formed between the two supporting wheels 303, the workpiece is simultaneously in line contact with the two supporting wheels 303, when one supporting wheel 303 rotates, the contact position of the workpiece and the supporting wheel 303 drives the workpiece to rotate, so that the other supporting wheel 303 is driven to rotate through the workpiece, and a driving and two driven transmission structures are formed.

In order to facilitate discharging of the detected workpiece, the supporting seat 3 further includes an ejector plate 306 and a material receiving plate 307, the ejector plate 306 is mounted on one side of the end face of the supporting wheel 303 through the ejection telescopic rod 302, and an inclined surface is arranged on the top surface of the ejector plate 306 and used for ejecting the workpiece from the supporting portion 304 and guiding the workpiece to roll to the material receiving plate 307.

The material receiving plate 307 is installed at the lower side of the supporting seat 3 corresponding to the inclined surface of the ejector plate 306, and when the ejection telescopic rod 302 is at the lowest position, the whole ejector plate 306 is located below the supporting portion 304 to avoid the workpiece.

Specifically, with reference to fig. 6 and 7, the seat portion of the two side adjustment support wheels 303 is provided with a silicon carbide tube 5 ejection portion, the ejection portion is provided with an ejection telescopic rod 302, in this embodiment, the ejection telescopic rod 302 is an ejection cylinder 205, the ejection cylinder 205 has an electrical control portion for controlling ejection, the ejection portion is provided with an ejection plate 306, the ejection plate 306 is disposed at the end portion of the ejection cylinder 205, and the top surface of the ejection plate 306 is an inclined surface.

Base 1 is equipped with the tray of placing carborundum pipe 5, tray one side has the limiting plate that prevents carborundum pipe 5 and drop, and the opposite side is a little higher than supporting wheel 303, and adjustment supporting wheel 303 seat one side is equipped with connects flitch 307, receives carborundum pipe 5 after the inspection, connects flitch 307 height to reduce gradually.

And arranging an ejector plate 306 with an inclined top surface, wherein the ejector plate 306 avoids the position of the workpiece in a non-working state, pushes the workpiece to be separated from the supporting part 304 after the bending strength of the workpiece is tested, guides the workpiece to enter a material receiving plate 307, and finishes discharging the tested workpiece.

The base 1 is provided with an electrical control part which is provided with electrical elements and related programs and is integrated in an electrical control box 4 on one side of the base 1; the electric control part controls the extension length, time and frequency of the pressure head 207; the electric control part controls the rotation time, the rotation speed, the rotation direction, the rotation number and the like of the power rotation part; the electric control part is provided with a counting function to record the number of the qualified silicon carbide tubes 5 and the number of the unqualified silicon carbide tubes respectively.

With reference to fig. 1 and 2, in order to sequentially inspect the workpieces, a storage plate for temporarily storing the workpieces is further disposed on the base 1, one end of the storage plate extends to the supporting portion 304, and the other end of the storage plate is bent to form a stop; the workpieces are sequentially stacked on the storage plate.

For the working process of the bending strength testing device, taking the test of the silicon carbide tube 5 workpiece as an example, the following is introduced:

the silicon carbide tube 5 to be detected is horizontally placed between two support wheels 303 of an adjusting support wheel 303 seat on two sides of a pressure head 207, the pressure head 207 is pushed to press down on the silicon carbide tube 5 to be detected by an electrically controlled air cylinder 205, after the silicon carbide tube 5 to be detected is bent downwards to a specified distance, an electric control system starts a power rotating part, so that the silicon carbide tube 5 to be detected rotates to a specified number of turns on the adjusting support wheel 303 seat, after the silicon carbide tube 5 is abnormal, the electric control system controls the air cylinder 205 to drive the pressure head 207 to move upwards, after the silicon carbide tube is separated from the silicon carbide to be detected, the electric control system controls the ejection air cylinder 205 to drive the ejection plate 306 to move upwards to separate qualified silicon carbide from a detection position (a position between the two support wheels 303) and separate the silicon carbide tube from the material receiving plate 307.

In the pressurizing and rotating process, abnormalities occur, such as the breakage of the pipe, and the broken pipe needs to be removed.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bending strength testing device is characterized by comprising a base, supporting seats and a pressure head assembly, wherein at least two supporting seats are arranged on the base at intervals, at least two supporting wheels are arranged on the supporting seats at intervals, a concave supporting part is formed between the outer circumferential surfaces of every two adjacent supporting wheels, and the supporting parts are used for supporting a workpiece and driving the workpiece to rotate around the axis of the workpiece; the pressure head assembly comprises a telescopic mechanism and a pressure head connected with the tail end of the telescopic mechanism, and a pressure wheel used for applying thrust to the workpiece in the radial direction is arranged on the pressure head.

2. The bending strength testing device according to claim 1, wherein the pressure head assembly is mounted on the base through a fixing frame, the telescoping mechanism comprises an air cylinder and a sliding rail and sliding block mechanism, the air cylinder is mounted on the fixing frame through the sliding rail and sliding block mechanism, and the pressure head is mounted at the output end of the air cylinder.

3. The bending strength testing device according to claim 2, wherein a screw mechanism is mounted on the fixing frame, and the screw mechanism is connected with the sliding rail and sliding block mechanism and is used for driving the air cylinder to move relative to the fixing frame.

4. The bending strength testing apparatus according to claim 1, wherein the pressing head includes two arms, the pressing rollers being mounted on ends of the arms, the pressing rollers being spaced apart for jointly contacting and pressing the workpiece.

5. The bending strength inspection apparatus according to claim 1, wherein a driving mechanism is connected to at least one of the support wheels of the support base, the driving mechanism being configured to rotate the support wheel to rotate the workpiece about the axis.

6. The bending strength inspection device according to claim 1, wherein the base is further provided with an ejector plate and a receiving plate, the ejector plate is mounted on one side of the end surface of the supporting wheel through an ejection telescopic rod, and the top surface of the ejector plate is provided with an inclined surface for ejecting the workpiece from the supporting portion and guiding the workpiece to roll to the receiving plate.

7. The bending strength inspection device according to claim 6, wherein the receiving plate is installed on a lower side of the supporting seat corresponding to the inclined surface of the ejector plate, and when the ejecting telescopic rod is at the lowest position, the ejector plate is entirely located below the supporting portion to avoid the workpiece.

8. The bending strength inspection device according to claim 1, wherein at least one of the supporting bases is slidably mounted on a predetermined guide rail of the base, and at least two of the supporting bases are adapted to contact and support the workpiece.

9. The bending strength inspection device according to claim 8, wherein an adjustment bolt is installed on the support base for locking or unlocking the position of the support base on the base.

10. The bending strength inspection device according to claim 1, wherein a storage plate is mounted on the base, one end of the storage plate extends above the support portion, and the other end is bent to form a stopper.