CN212653303U - Clamp for testing grip strength of artificial board for screwing and pulling screw - Google Patents
Clamp for testing grip strength of artificial board for screwing and pulling screw Download PDFInfo
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- CN212653303U CN212653303U CN202021052617.5U CN202021052617U CN212653303U CN 212653303 U CN212653303 U CN 212653303U CN 202021052617 U CN202021052617 U CN 202021052617U CN 212653303 U CN212653303 U CN 212653303U
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- artificial board
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Abstract
The artificial board screw-pulling grip test fixture comprises an upper chuck (5) and a lower chuck (6); the upper part of the lower chuck (6) is provided with an upper chuck (5), the middle parts of the lower chuck (6) and the upper chuck (5) are provided with cavities, the front walls of the lower chuck (6) and the upper chuck (5) are open, the top of the lower chuck (6) is provided with an opening for exposing the head of the tapping screw (4), and correspondingly, the bottom of the upper chuck (5) is provided with a clamping groove for clamping the head of the tapping screw (4). The artificial board and the tapping screw are clamped and fixed by matching the upper chuck (5) and the lower chuck (6), and the force required for pulling out and screwing in the tapping screw with the specified depth on the artificial board can be measured by performing a pulling test on a universal mechanical testing machine.
Description
Technical Field
The utility model relates to a structure improvement technique of wood-based plate capability test innovation equipment device, especially the wood-based plate is twisted and is pulled out screw grip test fixture.
Background
The artificial board is a board or a molded product which is made by taking wood or other non-wood plants as raw materials, separating the raw materials into various unit materials through certain mechanical processing and then gluing the unit materials with or without adhesive and other additives. The product mainly comprises three major products such as plywood, shaving (particle board) and fiberboard, and the extension product and the deep processing product of the product can reach hundreds of types. The birth of artificial boards marks the beginning of the modernization period of wood processing. In addition, the artificial board can also improve the comprehensive utilization rate of wood, and 1 cubic meter of artificial board can replace 3-5 cubic meters of log.
The screw holding force of the artificial board belongs to an important index in the physical and chemical properties of the artificial board and the veneer artificial board, and the capability of the connection performance of the artificial board is reflected. The screw holding force is divided into a board surface screw holding force and a board edge screw holding force, a tapping screw of a specified type is screwed into the artificial board, the screwing depth is 15 +/-0.5 mm, the artificial board and the tapping screw are respectively fixed by a special clamp, a universal mechanical testing machine is used for applying load at a certain speed, and the load value when the screw is pulled out is measured.
In the prior art, a special auxiliary fixing and supporting clamp matched with the prior art is not disclosed, so that the related test has low efficacy and is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an artificial board is twisted and is pulled out screw grip test fixture can measure and extract the required power of the self-tapping screw who twists the regulation degree of depth on the artificial board, solves above technical problem.
The purpose of the utility model is realized by the following technical measures: comprises an upper chuck and a lower chuck; the upper part of the lower chuck is provided with an upper chuck, the middle parts of the lower chuck and the upper chuck are provided with cavities, the front walls of the lower chuck and the upper chuck are open, the top of the lower chuck is provided with an opening for exposing the head of the self-tapping screw, and correspondingly, the bottom of the upper chuck is provided with a clamping groove for clamping the head of the self-tapping screw.
In particular, screw holes are respectively formed in the middle of the lower end face of the lower chuck and the upper end face of the upper chuck.
Particularly, the middle parts of the lower end surface of the lower chuck and the upper end surface of the upper chuck are respectively and fixedly connected with a lower connecting column and an upper connecting column. The lower chuck and the upper chuck are coaxially arranged in an up-down alignment manner. The lower connecting column and the upper connecting column are coaxially arranged in an up-down alignment manner.
In particular, the lower jaw has an open slot at the top.
Particularly, the top of the lower chuck is provided with a hollow groove.
In particular, the upper chuck has an elongated open slot in the bottom and the slot has a beveled edge at the bottom edge.
Particularly, the bottom of the upper clamping head is provided with a clamping groove for clamping the head of the self-tapping screw.
In particular, the lower and upper cartridge front and side walls are open.
The utility model discloses an advantage and effect: the upper chuck and the lower chuck are matched to complete clamping and fixing of the artificial board and the self-tapping screw, and a drawing test is performed on a universal mechanical testing machine. The structure is simple, the manufacture, the use and the maintenance are easy, the application and the installation are convenient, and the test effect is obviously improved.
Drawings
Fig. 1 is a schematic view of the structure of the embodiment of the present invention.
Fig. 2 is a schematic side view of the embodiment of the present invention.
Fig. 3 is a schematic view of an axial measurement structure of the lower chuck in the embodiment of the present invention.
The reference numerals include:
the self-tapping screw comprises an upper connecting column 1, a lower connecting column 2, an artificial board 3, a self-tapping screw 4, an upper chuck 5, a lower chuck 6 and an open slot 61.
Detailed Description
The utility model discloses a: an upper jaw 5 and a lower jaw 6.
The present invention will be further explained with reference to the drawings and examples.
Example 1: as shown in fig. 1, 2 and 3, the upper chuck 5 is arranged at the upper part of the lower chuck 6, a cavity is arranged at the middle parts of the lower chuck 6 and the upper chuck 5, the front walls of the lower chuck 6 and the upper chuck 5 are opened, an opening for exposing the head of the tapping screw 4 is arranged at the top part of the lower chuck 6, and correspondingly, a clamping groove for clamping the head of the tapping screw 4 is arranged at the bottom part of the upper chuck 5.
In the above, the lower end face of the lower chuck 6 and the middle part of the upper end face of the upper chuck 5 are respectively provided with a screw hole.
In the above, the lower end face of the lower chuck 6 and the middle part of the upper end face of the upper chuck 5 are respectively fixedly connected with the lower connecting column 2 and the upper connecting column 1. The lower chuck 6 and the upper chuck 5 are coaxially arranged in an up-down alignment manner. The lower connecting column 2 and the upper connecting column 1 are coaxially arranged in an up-down alignment manner.
In the above, the lower chuck 6 has an open slot at the top.
In the foregoing, the top of the lower chuck 6 has a hollow groove.
In the above, the upper chuck 5 has an elongated open slot at the bottom, and the bottom edge of the slot has an inclined cutting edge.
In the foregoing, the bottom of the upper chuck 5 is provided with a clamping groove for clamping the head of the tapping screw 4.
In the front speed, the front walls and the two side walls of the lower chuck 6 and the upper chuck 5 are opened.
The embodiment of the utility model provides an in, go up chuck 5, 6 metal material of lower chuck make, design stirrup shape structure, go up 5 top surfaces of chuck and lower 6 bottom surfaces of chuck in the middle of process into M8 screw holes respectively to connect respectively and connect post 1, lower post 2, so that respectively with the corresponding upper and lower connector connection of omnipotent mechanical testing machine, in addition, go up 5 bottom surfaces of chuck line cuts into width (6.5 +/-0.2) mm slot, a screwhead for positioning self-tapping screw 4 on the wood-based plate 3. The top surface line of the lower chuck 6 is cut into an open slot 61 with the width of 35mm, and the open slot is used for leaking the tapping screw 4 arranged on the top edge of the artificial board 3, so that the screw head at the top of the tapping screw 4 can be conveniently clamped by the slot at the bottom of the upper chuck 5. The external dimension of the upper clamping head 5 is 40X 40, and the front side and the two side sides are opened; the lower clip 6 has an outer dimension of 70 x 80 and is open on the front and both sides. The specification of the connecting end of the upper connecting column 1 and the lower connecting column 2 is M8.
In the embodiment of the utility model, the inner cavity of the lower chuck 6 is used for placing the artificial board 3 test sample plate, wherein, the edge and the surface of the artificial board 3 test sample plate on the top surface are screwed with the tapping screws 4, therefore, the size of the inner cavity top surface of the lower chuck 6 should be large enough to accommodate the test sample plate to erect the side edge or to lay the surface horizontally, moreover, the size of the open slot 61 is convenient to operate and is enough to block the outer edge of the artificial board 3 test sample plate, but not larger than the bottom surface of the upper chuck 5; accordingly, the upper cartridge 5 is set based on the function and does not need to be made too large.
In the embodiment of the utility model, the upper chuck 5 is used for pulling out the self-tapping screw 4, and the top surface of the upper chuck 5 is connected with the upper joint of the universal mechanical testing machine through the upper connecting column 1; the lower chuck 6 is used for fixing the artificial board 3, and the lower chuck 6 is connected with the lower joint of the universal mechanical testing machine through the lower connecting column 2; after the tapping screw 4 is screwed on the artificial board 3 according to the standard requirement, the nail pulling experiment is immediately carried out, the contact surfaces of the upper chuck 5, the lower chuck 6 and the artificial board 3 are vertical to the central line of the mechanical testing machine, and the tapping screw 4 is aligned with the tensile central line of the testing machine.
Claims (9)
1. The artificial board screw-pulling grip test fixture comprises an upper chuck (5) and a lower chuck (6); the self-tapping screw tapping device is characterized in that an upper chuck (5) is arranged on the upper portion of a lower chuck (6), a cavity is formed in the middle of the lower chuck (6) and the middle of the upper chuck (5), the front walls of the lower chuck (6) and the upper chuck (5) are open, an opening used for exposing the head of a self-tapping screw (4) is formed in the top of the lower chuck (6), and correspondingly, a clamping groove used for clamping the head of the self-tapping screw (4) is formed in the bottom of the upper chuck (5).
2. The artificial board twist-pull screw grip test fixture according to claim 1, wherein the lower end surface of the lower chuck (6) and the middle part of the upper end surface of the upper chuck (5) are respectively provided with a screw hole.
3. The artificial board twist-and-pull screw grip test fixture according to claim 1, wherein the lower end surface of the lower chuck (6) and the middle portion of the upper end surface of the upper chuck (5) are fixedly connected with the lower connector (2) and the upper connector (1), respectively.
4. The artificial board twist-pull screw grip test fixture according to claim 1, wherein the top of the lower chuck (6) has an open slot.
5. The artificial board twist-off screw grip strength test fixture according to claim 1, characterized in that the top of the lower chuck (6) has a hollowed-out groove.
6. The artificial board twist-and-pull screw grip strength test fixture according to claim 1, wherein the bottom of the upper chuck (5) has an elongated open slot, and the bottom edge of the slot has an inclined cutting edge.
7. The artificial board twist-pull screw grip test fixture according to claim 1, wherein the front wall and the two side walls of the lower chuck (6) and the upper chuck (5) are open.
8. The artificial board twist-and-pull screw grip test fixture according to claim 3, wherein the lower chuck (6) and the upper chuck (5) are coaxially mounted with upper and lower alignment.
9. The artificial board twist-pull screw grip test fixture according to claim 3, wherein the lower connector (2) and the upper connector (1) are coaxially mounted with the upper and lower alignment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021052617.5U CN212653303U (en) | 2020-06-09 | 2020-06-09 | Clamp for testing grip strength of artificial board for screwing and pulling screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021052617.5U CN212653303U (en) | 2020-06-09 | 2020-06-09 | Clamp for testing grip strength of artificial board for screwing and pulling screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212653303U true CN212653303U (en) | 2021-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021052617.5U Active CN212653303U (en) | 2020-06-09 | 2020-06-09 | Clamp for testing grip strength of artificial board for screwing and pulling screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212653303U (en) |
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2020
- 2020-06-09 CN CN202021052617.5U patent/CN212653303U/en active Active
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