CN212964339U

CN212964339U - Plate bending test device

Info

Publication number: CN212964339U
Application number: CN202021995088.2U
Authority: CN
Inventors: 郭红娟
Original assignee: Jiangsu Nantai Quality Testing Co ltd
Current assignee: Jiangsu Nantai Quality Testing Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-04-13
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a plate bending test device, which comprises a base, a groove-shaped die handle, a male die, a positioning pin, a female die, a spring, a screw, a top rod and a spring pin, wherein two hydraulic rods are symmetrically arranged on the left and right of the upper surface of the base, a top plate is fixedly arranged at the top of the hydraulic rods, a hollow cylinder is arranged at the central position below the top plate, the groove-shaped die handle is arranged in the hollow cylinder, a second through hole is arranged on the groove-shaped die handle, the positioning pin passes through the second through hole to fix the male die on the groove-shaped die handle, four third through holes are arranged on the female die, a positioning plate is arranged on the upper surface of the female die, the top rod is positioned above the spring, the screw passes through the groove to connect the base and the female die, the spring pin is positioned in the first through hole and the third through hole, the utility model discloses structural design is suitable, convenient to use, and the test result is more accurate.

Description

Plate bending test device

Technical Field

The utility model relates to a mechanical test device technical field specifically is a panel bending test device.

Background

The bending test is a test for measuring mechanical properties of a material when the material is subjected to a bending load, and is one of the basic methods for testing mechanical properties of a material. In the bending test, one side of the sample is in unidirectional tension, the other side of the sample is in unidirectional compression, and the maximum positive stress appears on the surface of the sample and is sensitive to surface defects, so the bending test is usually used for testing the surface defects of the material, such as carburization or surface quenching layer quality.

At present, a bending test is usually carried out by mutually matching a pressure head and a support roller, and the pressure head theoretically acts on the center line of a sample in the test process. In fact, however, different friction forces may be generated on the contact surfaces of the sample and the two support surfaces due to factors such as uneven stress, so that the sample has different sliding distances, which further affects the accuracy of the test result, and after the test is finished, the sample is pressed between the two support rollers, which often causes the situation of inconvenient taking out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a panel bending test device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a plate bending test device comprises a base, a groove-shaped die handle, a male die, a positioning pin, a female die, a spring, a screw, a top rod and a spring pin, wherein two grooves and four first through holes are formed in the lower portion of the base, two hydraulic rods are symmetrically arranged on the left and right of the upper surface of the base, a top plate is fixedly installed at the top of each hydraulic rod, a hollow cylinder is arranged in the center of the lower portion of the top plate, the groove-shaped die handle is installed in the hollow cylinder, a second through hole is formed in the groove-shaped die handle, the positioning pin penetrates through the second through hole to fix the male die on the groove-shaped die handle, the female die is arranged above the base, four third through holes are formed in the female die, a positioning plate is arranged on the upper surface of the female die, the spring is located in the center of the base and the female die, the top rod is located above, the number of the spring pins is four, and the four spring pins are located inside the first through hole and the third through hole to strengthen the fixation of the base and the female die.

Preferably, the hollow cylinder is provided with an internal thread, the groove-shaped die shank is provided with an external thread, and the internal thread is matched with the external thread.

Preferably, the diameters of the first through hole, the third through hole and the spring pin are consistent.

Preferably, the base, the convex die and the concave die are superposed, and grooves are formed above the center of the base and below the center of the concave die.

Preferably, two threaded holes matched with the screws are formed in the lower portion of the female die.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the ejector rod is arranged at the central position of the female die, the male die is controlled by the hydraulic rod to slowly move down to extrude a sample during testing, the sample extrudes the ejector rod, the ejector rod is matched with the male die to clamp the sample at the moment, so that the phenomenon that the sample generates different sliding distances due to different friction forces possibly generated by the contact surfaces of the sample and two supporting surfaces due to factors such as uneven stress is avoided, and the accuracy of the test is improved;

2. the utility model discloses after the experiment, hydraulic stem control terrace die rises, and the ejector pin has lost the pressure of sample, receives the spring force effect, and the ejector pin can the rebound take out crooked sample from the die.

Drawings

Fig. 1 is a schematic view of the overall structure of a plate bending test device of the present invention;

fig. 2 is the utility model discloses a panel bending test device bottom plate structure schematic diagram.

In the figure: 1. a base; 11. a groove; 12. a first through hole; 13. a hydraulic lever; 14. a top plate; 15. a hollow cylinder; 2. a groove-shaped die shank; 21. a second through hole; 3. a male die; 4. positioning pins; 5. a female die; 51. a third through hole; 52. positioning a plate; 6. a spring; 7. a screw; 8. a top rod; 9. and a spring pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a plate bending test device comprises a base 1, a groove-shaped die shank 2, a male die 3, a positioning pin 4, a female die 5, a spring 6, a screw 7, a push rod 8 and a spring pin 9, wherein two grooves 11 and four first through holes 12 are arranged below the base 1, two hydraulic rods 13 are symmetrically arranged on the upper surface of the base 1 in a bilateral mode, a top plate 14 is fixedly arranged at the top of each hydraulic rod 13, a hollow cylinder 15 is arranged at the central position below the top plate 14, the groove-shaped die shank 2 is installed in the hollow cylinder 15, a second through hole 21 is arranged on the groove-shaped die shank 2, the positioning pin 4 penetrates through the second through hole 21 to fix the male die 3 on the groove-shaped die shank 2, the female die 5 is arranged above the base 1, four third through holes 51 are arranged on the female die 5, a positioning plate 52 is arranged on the upper surface of the female die 5, and the spring 6 is positioned at the centers of the, the ejector rod 8 is located above the spring 6, the screws 7 penetrate through the grooves 11 to connect the base 1 with the female die 5, four spring pins 9 are arranged and located inside the first through hole 12 and the third through hole 51 to strengthen the fixation of the base 1 and the female die 5.

The hollow cylinder 15 is provided with an internal thread, the groove-shaped die shank 2 is provided with an external thread, and the internal thread is matched with the external thread.

The diameters of the first through hole 12, the third through hole 51 and the spring pin 9 are consistent.

The base 1 with the coincidence of the central line of die 5, base 1 with the center below of die 5 sets up slottedly.

And two threaded holes matched with the screws 7 are formed below the female die 5.

The working principle is as follows: the utility model discloses a put the sample at the upper surface of die 5 earlier when using, fix a position the sample through locating plate 52, then control hydraulic stem 13 slow downstream drives and fixes the cell type die shank 2 downstream on roof 14, install terrace die 3 on cell type die shank 2 and extrude the sample, terrace die 3 cooperation ejector pin 8 presss from both sides the sample tight in the centre, avoid appearing sample and two supporting surface contact faces in the test process and probably producing different frictional force because of factors such as atress is inhomogeneous, lead to the sample to produce the phenomenon of different sliding distance, spring 6 is in compression state this moment, after the experiment, it needs the data of collecting to record, the hydraulic stem 13 of controlling again moves up, spring 6 that loses pressure begins to stretch under the effect of elasticity, the ejector pin 8 that promotes spring 6 top shifts up extrudes die 5 with crooked sample.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a panel bending test device, includes base (1), cell type die shank (2), terrace die (3), locating pin (4), die (5), spring (6), screw (7), ejector pin (8) and spring catch (9), its characterized in that: the die is characterized in that two grooves (11) and four through holes I (12) are arranged below the base (1), two hydraulic rods (13) are symmetrically arranged on the upper surface of the base (1) in a bilateral mode, a top plate (14) is fixedly mounted at the top of each hydraulic rod (13), a hollow cylinder (15) is arranged at the center position below the top plate (14), the groove-shaped die shank (2) is mounted in the hollow cylinder (15), a through hole II (21) is arranged on the groove-shaped die shank (2), the positioning pin (4) penetrates through the through hole II (21) to fix the male die (3) on the groove-shaped die shank (2), the female die (5) is arranged above the base (1), four through holes III (51) are arranged on the female die (5), a positioning plate (52) is arranged on the upper surface of the female die (5), and the spring (6) is located at the center of the base (1) and the female die (5), ejector pin (8) are located spring (6) top, screw (7) pass recess (11) will base (1) with die (5) are connected, spring catch (9) have four, all are located through-hole one (12) with through-hole three (51) inside is strengthened right base (1) with the fixed of die (5).

2. A sheet bending test apparatus according to claim 1, wherein: the hollow cylinder (15) is provided with an internal thread, the groove-shaped die handle (2) is provided with an external thread, and the internal thread is matched with the external thread.

3. A sheet bending test apparatus according to claim 1, wherein: the diameters of the first through hole (12), the third through hole (51) and the spring pin (9) are consistent.

4. A sheet bending test apparatus according to claim 1, wherein: the base (1) with the coincidence of the central line of die (5), base (1) central top with the central below of die (5) is provided with slottedly.

5. A sheet bending test apparatus according to claim 1, wherein: and two threaded holes matched with the screws (7) are formed below the female die (5).