CN215320905U

CN215320905U - Forming die for pressed test block

Info

Publication number: CN215320905U
Application number: CN202120752310.4U
Authority: CN
Inventors: 赵瑞斌; 徐鹏; 张彦; 张善广; 张竹慧; 陈竞雄
Original assignee: Tianjin Chengjian University
Current assignee: Tianjin Chengjian University
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-28
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a pressing test block forming die which comprises a circular core column and a lower die with a cavity, wherein the core column can be inserted into the cavity so as to be used for extruding a sample in the cavity; the lower die comprises a first die body and a second die body which are detachably and mutually spliced and fixed at the edge position; hinge structures are formed on one sides of the edge positions of the first die body and the second die body which are spliced mutually, and the other sides of the first die body and the second die body are connected and fixed mutually through bolts. By adopting the technical scheme, the pressing test block forming die disclosed by the utility model has the advantages that the sample is filled in the cavity of the lower die when the die is used, the core column is inserted into the cavity to compact the sample, and the core column is taken out after the sample is compacted.

Description

Forming die for pressed test block

Technical Field

The utility model relates to the field of test block pressing and forming, in particular to a mould for pressing and forming a test block by external pressure in a civil test.

Background

The 'laboratory pressure preparation method for preparing test blocks' is to pass materials used in the test through a certain bonding material by a certain mould, place the materials in the corresponding mould and shape the materials by the external pressure. At present, due to the limitation of laboratory conditions, equal-size test blocks cannot be prepared in many cases, and small-size test blocks are required to perform test tests of corresponding properties and the like. At present, civil engineering laboratories mainly relate to soil, sand and soil-sand mixed test blocks, and many experiments need to be pressed and formed by means of external force. Owing to directly put into cylindrical closed sleeve with the test material, with upper portion stem disect insertion sleeve in, with the help of external force compression moulding, can lead to because stem and the laminating of cover barrel wall are inseparable, the material spills over during the suppression, the space between sample and the sleeve is sealed, form the vacuum, and because the viscidity of sample material, lead to the compression moulding stem to be difficult to extract, extract the stem of inserting in the mould sleeve by force and can lead to the test block impaired, the fracture, lead to later stage test data's accuracy to descend. Therefore, in the process of using the existing test block pressing die in a laboratory, different soil, sand and mixed materials thereof are pressed into the test block in the die by means of external force, so that the defects that a core column in a die sleeve is inconvenient to pull out, the die sleeve is difficult to clean and the like exist.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to provide a pressing test block forming die which is convenient for sampling after a pressing experiment is finished.

In order to achieve the purpose, the pressing test block forming die comprises a circular core column and a lower die with a cavity, wherein the core column can be inserted into the cavity so as to be used for extruding a test sample in the cavity; the lower die comprises a first die body and a second die body which are detachably and mutually spliced and fixed at the edge position; hinge structures are formed on one sides of the edge positions of the first die body and the second die body which are spliced mutually, and the other sides of the first die body and the second die body are connected and fixed mutually through bolts.

The hinge structure comprises shaft seats respectively arranged at the edge positions of the first mold body and the second mold body, shaft holes are formed in the shaft seats, and a pin shaft is inserted into the shaft holes so as to connect the first mold body and the second mold body with each other.

The shaft seats on the first die body and the second die body are arranged in a staggered mode.

Grooves are respectively arranged on the upper end surface of the uppermost shaft seat and the lower end surface of the lowermost shaft seat.

And a cap part is arranged at the top end of the pin shaft.

A gasket is disposed within the recess, the cap being pressed against the gasket.

And a primary-secondary port structure is arranged at the edge position where the first die body and the second die body are spliced with each other.

And fixing lugs are respectively arranged at the edge positions of the first die body and the second die body, which are positioned at the opposite side of the pin shaft, and the bolt penetrates through a fixing hole in each fixing lug and then is screwed with a nut.

The nut is a butterfly nut.

The fixing lugs are two in upper and lower distribution, and correspondingly, the bolts and the nuts are also two in distribution.

By adopting the technical scheme, the pressing test block forming die disclosed by the utility model has the advantages that the sample is filled in the cavity of the lower die when the die is used, the core column is inserted into the cavity to compact the sample, and the core column is taken out after the sample is compacted.

Drawings

Fig. 1 is a schematic structural view of a test block pressing mold according to the present invention.

Fig. 2 is a schematic structural view of the lower die.

Fig. 3 is a schematic top view of the lower mold.

Fig. 4 is an exploded view of the lower die.

Fig. 5 is a sectional view taken along line a-a in fig. 4.

Fig. 6 is a sectional view taken along line B-B in fig. 4.

Fig. 7 is a sectional view taken along line C-C in fig. 4.

Fig. 8 is a sectional view taken along line D-D in fig. 4.

Fig. 9 is a schematic structural view of the stem.

Fig. 10 is a schematic top view of the stem.

Fig. 11 is a schematic structural view of the pin.

Fig. 12 is a schematic structural view of a gasket.

Fig. 13 is a schematic structural view of a bolt and a nut.

Detailed Description

The utility model is described in further detail below with reference to the figures and the detailed description.

As shown in fig. 1, the mold for molding a pressed test block of the present invention includes a circular core column 1 and a lower mold 2 having a cavity 100, wherein the core column 1 can be inserted into the cavity 100 to extrude a sample in the cavity 100, when in use, the cavity 100 of the lower mold 2 is filled with the sample, the core column 1 is inserted into the cavity 100 to compact the sample, and the core column 1 is taken out after the completion.

In the present invention, as shown in fig. 2, the lower mold 2 includes a first mold body 21 and a second mold body 22 that are detachably and mutually spliced and fixed at an edge position, so that the first mold body 21 and the second mold body 22 can be opened towards two sides, and then the test block formed by pressing can be taken out, which is very convenient.

Specifically, as shown in fig. 3 to 7, the hinge structure is formed on one side of the edge position where the first mold body 21 and the second mold body 22 are spliced with each other, and the other side is fixed to each other by the bolt 3.

The hinge structure comprises shaft seats 20 respectively arranged at the edge positions of the first mold body 21 and the second mold body 22, shaft holes 201 are formed in the shaft seats 20, and a pin shaft 4 is inserted into the shaft holes 201 so as to connect the first mold body 21 and the second mold body 22 with each other.

The shaft seats 20 on the first mold body 21 and the shaft seats 20 on the second mold body 22 are arranged in a staggered manner, the upper end face of the uppermost shaft seat 20 and the lower end face of the lowermost shaft seat 20 are respectively provided with a groove 202, the top end of the pin shaft 4 is provided with a cap 41, and after the pin shaft 4 is inserted into the shaft hole 201, the cap 41 can enter the groove 202.

A gasket 5 is arranged in the recess 202, the cap 41 being pressed against the gasket 5.

A primary-secondary port structure is arranged at the edge position where the first mold body 21 and the second mold body 22 are spliced with each other, as shown in fig. 5 and 6, in this embodiment, a secondary port 210 is arranged on the first mold body 21, and a primary port 220 is arranged on the second mold body 22.

The edge positions of the first mold body 21 and the second mold body 22, which are located on the opposite side of the pin 4, are respectively provided with a fixing lug 203, and the bolt 3 is screwed with the nut 6 after passing through a fixing hole 203a on the fixing lug 203.

Preferably, the nut 6 is a wing nut.

The two fixing lugs 203 are distributed up and down, and correspondingly, the two bolts 3 and the two nuts 6 are also distributed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a briquetting forming die which characterized in that: the device comprises a circular core column and a lower die with a cavity, wherein the core column can be inserted into the cavity so as to be used for extruding a sample in the cavity; the lower die comprises a first die body and a second die body which are detachably and mutually spliced and fixed at the edge position; hinge structures are formed on one sides of the edge positions of the first die body and the second die body which are spliced mutually, and the other sides of the first die body and the second die body are connected and fixed mutually through bolts.

2. The press test block molding die of claim 1, wherein: the hinge structure comprises shaft seats respectively arranged at the edge positions of the first mold body and the second mold body, shaft holes are formed in the shaft seats, and a pin shaft is inserted into the shaft holes so as to connect the first mold body and the second mold body with each other.

3. The press test block molding die of claim 2, wherein: the shaft seats on the first die body and the second die body are arranged in a staggered mode.

4. The press test block molding die of claim 2, wherein: grooves are respectively arranged on the upper end surface of the uppermost shaft seat and the lower end surface of the lowermost shaft seat.

5. The press test block molding die of claim 4, wherein: and a cap part is arranged at the top end of the pin shaft.

6. The press test block molding die of claim 5, wherein: a gasket is disposed within the recess, the cap being pressed against the gasket.

7. The pressed test block molding die according to any one of claims 1 to 6, wherein: and a primary-secondary port structure is arranged at the edge position where the first die body and the second die body are spliced with each other.

8. The pressed test block molding die according to any one of claims 1 to 6, wherein: and fixing lugs are respectively arranged at the edge positions of the first die body and the second die body, which are positioned at the opposite side of the pin shaft, and the bolt penetrates through a fixing hole in each fixing lug and then is screwed with a nut.

9. The press test block molding die of claim 8, wherein: the nut is a butterfly nut.

10. The press test block molding die of claim 8, wherein: the fixing lugs are two in upper and lower distribution, and correspondingly, the bolts and the nuts are also two in distribution.