CN110160846A - A kind of the end reinforcement means and device of 3D printing PLA strength tests - Google Patents
A kind of the end reinforcement means and device of 3D printing PLA strength tests Download PDFInfo
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- CN110160846A CN110160846A CN201910414438.7A CN201910414438A CN110160846A CN 110160846 A CN110160846 A CN 110160846A CN 201910414438 A CN201910414438 A CN 201910414438A CN 110160846 A CN110160846 A CN 110160846A
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- reinforced sheet
- silk
- pla
- hot melt
- sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention discloses the end reinforcement means and device of a kind of 3D printing PLA strength tests, method is prefabricated reinforced sheet, and sample silk is placed at the centroid of reinforced sheet, the two sides in sample silk are beaten after hot melt adhesive is melted, flatten reinforced sheet, after hot melt adhesive solidification sizing, remove sample silk, reinforced sheet is fixed on to PLA both ends using hot melt adhesive, device includes reinforcing sheet mold, telescopic rod and dynamic model block, sample silk wears groove is equipped on telescopic rod and dynamic model block, the left end of dynamic model block is equipped with sample silk fixture by clip slot, it can be to multiple diameter, the PLA silk material of a variety of end surface shapes carries out end reinforcing, PLA silk material after reinforcing can directly be tested clamp, the skidding of the PLA silk material end in drawing process can effectively be avoided, the case where local deformation is even broken, to improve PLA measuring accuracies, Testing efficiency is high, and PLA intensity can be tested in a variety of places and environment, and applicability is wide, and device makes reinforced sheet, and assists the connection of sample silk and reinforced sheet, high-efficient, at low cost.
Description
Technical field
The present invention relates to 3D printing consumptive material field, specially a kind of end reinforcement means of 3D printing PLA strength tests
And device.
Background technique
PLA is one kind of 3D printing material wire rod, and PLA is biodegradable material, by practical extensively.3D printing can
To print metal, forming principle is laser sintered.
PLA are that the common 3D printing consumptive material being widely used since the thick matter of silk is crisp directly measures its intensity, modulus
Equal strength properties are extremely difficult, and available data often refers to block materials, can not accurately reflect PLA prepare make quality and
The influence of silk material air exercise printing product.Existing silk material strength measurement method needs to be wound silk material end, and winding method
The case where being not suitable for the crisp PLA silk material of matter, being also not suitable for silk material length limited.General fixture pulls the both ends of silk material, then surveys
The tensile strength of silk material is obtained, and silk material end is easy to skid in drawing process, and end is easy to be caused to test by fixture pinch off
Failure, greatly reduces testing efficiency.
Summary of the invention
In order to overcome the shortcomings of prior art, the end that the present invention provides a kind of 3D printing PLA strength tests adds
Reinforced sheet is fixed on PLA both ends using hot melt adhesive by solid method and device, can be to multiple diameter, a variety of end surface shapes
PLA silk material carries out end reinforcing, and the skidding of the PLA silk material end in drawing process, local deformation can effectively be avoided even to be broken
The case where, to improve PLA measuring accuracies, accurate PLA of strength parameter can be obtained, testing efficiency is high, can be
PLA intensity are tested in a variety of places and environment, applicability is wide, and device energy quick Fabrication reinforced sheet simultaneously assists the end of sample silk to add
Gu function is more, the efficiency of sample silk end reinforcing is improved, can effectively solve the problem of background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of end reinforcement means of 3D printing PLA strength tests, includes the following steps:
Include the following steps:
Step 100, prefabricated reinforced sheet, and sample silk is placed at the centroid of reinforced sheet;
Step 200 beats two sides in sample silk after melting hot melt adhesive;
Step 300 flattens reinforced sheet, until removing the sample silk with hot melt adhesive after hot melt adhesive solidification sizing.
Further, the production method of the reinforced sheet includes: using the scraps of paper such as A4 paper thickness, according to loads fixture face
The reinforced sheet that product preparation matches.
Further, the reinforced sheet is equipped with clamping part and non-clamping portion, and the outer surface in the non-clamping portion is gradual change
Section gradually becomes smaller from the area of section in clamping part to the non-clamping portion of reinforced sheet.
Further, the step 200 further include: hot melt adhesive is beaten by the two sides in sample silk using battery driving hot melt gun,
The dosage standard of the hot melt adhesive are as follows: so that hot melt adhesive height is suitable with sample silk diameter.
Further, the reinforced sheet completes the step of flattening by press.
In addition, the present invention also provides a kind of end bracing means of 3D printing PLA strength tests, including U-shaped frame, institute
The left end and right end for stating U-shaped frame are separately installed with cover half device and die device, and the cover half device includes being mounted on a U-shaped frame left side
The reinforcement sheet mold of bottom is held, the reinforcement sheet mold includes bed die and top demoulding, the top surface and the bottom of top demoulding of the bed die
Face is in contact, and the left side top of the U-shaped frame is equipped with oil cylinder, the oil cylinder bottom end and the fixed company of top demoulding by mounting plate
It connects;
The die device is mounted on the telescopic rod on U-shaped frame right end, and the left end of the telescopic rod connects dynamic model block, described
The side of dynamic model block is equipped with and the consistent gradual change groove of reinforced sheet outer shape, the left end of the telescopic rod and the side of dynamic model block
It is equipped with sample silk wears groove interconnected, sample silk fixture is also equipped with by clip slot inside the left end of the dynamic model block.
Further, the dynamic model block matches with sheet mold is reinforced, and the dynamic model block and the axis for reinforcing sheet mold exist
On same straight line, the opening for reinforcing sheet mold is towards upper right side, and the axis angle with horizontal plane for reinforcing sheet mold is
30-60°。
Further, the sample silk fixture includes the electromagnetic block and iron block for being mounted on clip slot bottom end and top, the electromagnetism
Block top surface is connected with plastic splint, the folder being equipped on the outside of sample silk wears groove on the plastic splint and the opposite face of iron block
Hole, the iron block slides up and down inside clip slot and iron block top is connected by spring with clip slot top surface.
Compared with prior art, the beneficial effects of the present invention are:
(1) reinforced sheet is fixed on PLA both ends using hot melt adhesive by the present invention, can be to multiple diameter, a variety of end face shapes
The PLA silk material of shape carries out end reinforcing, and a variety of press can be used and make smooth reinforcing end, the PLA silk material after reinforcing can
Directly tested clamp, the test of the PLA silk suitable for 100-150mm are reinforced, and the PLA in drawing process can be effectively avoided
The case where skidding, the local deformation of silk material end are even broken can obtain accurately to improve PLA measuring accuracies
PLA strength parameters, testing efficiency is high, can test in a variety of places and environment, applicability is wide.
(2) the device of the invention makes reinforced sheet fast and easy, and structure is simply at low cost, and can assist completing to reinforced sheet
With the injecting glue attended operation of sample silk, vdiverse in function, reinforced sheet is not required to take out after completing, the sample silk clamp on dynamic model block
Sample silk ensure that sample silk one end is properly inserted reinforced sheet centroid, plays the role of calibrating PLA silk material plummet direction, improves sample silk
The accuracy and confidence of subsequent strength test result, and manpower and time are saved, improve the efficiency of sample silk end reinforcing.
Detailed description of the invention
Fig. 1 is PLA silk strength test process end reinforcement means flow chart of the invention;
Fig. 2 is reinforced sheet positive structure schematic of the invention;
Fig. 3 is bracing means structural schematic diagram of the invention;
Fig. 4 is dynamic model block positive structure schematic of the invention;
Fig. 5 is the left end schematic cross-sectional view of dynamic model block of the invention.
In figure:
1- sample silk fixture;2-U shape frame;3- cover half device;4- die device;5- reinforces sheet mold;6- telescopic rod;7- dynamic model
Block;
11- electromagnetic block;12- iron block;13- plastic splint;14- folder hole;15- spring;
51- bed die;52- pushes up demoulding;53- oil cylinder;
71- gradual change groove;72- sample silk wears groove;73- clip slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides the end reinforcement means and device of a kind of 3D printing PLA strength tests, packet
Include following steps:
Step 100, prefabricated reinforced sheet, and sample silk is placed at the centroid of reinforced sheet.Reinforced sheet has the function of positioning, makes
The centroid of PLA silk material passes through the centroid of reinforced sheet, is avoided that in measurement process that PLA silk material is bent the influence to measurement result, rises
To the effect in calibration PLA silk material plummet direction.That is the axis of the axis of reinforced sheet and sample silk measures in this way on same straight line
When can greatly reduce because axis difference due to caused by test error, improve the precision of sample silk strength test.
Step 200 beats two sides in sample silk after melting hot melt adhesive, PLA can be bonded the centroid of reinforced sheet by hot melt adhesive
Place.
Step 300 flattens reinforced sheet, until removing the sample silk with hot melt adhesive after hot melt adhesive solidification sizing.Reinforced sheet is logical
It crosses press and completes the step of flattening, save manpower, pressing is high-efficient, and it is high-quality, avoid hot melt adhesive from being stained with to hand.
The production method of reinforced sheet includes: to avoid the too big clamping for influencing fixture of thickness using the scraps of paper such as A4 paper thickness,
The gradual change section reinforced sheet to match is prepared according to loads fixture area.
As shown in Fig. 2, being the front shape of reinforced sheet, a is reinforced sheet in figure, and b is the clamping part of reinforced sheet, and c is to reinforce
The non-clamping portion of piece, d are the gradual change section of reinforced sheet.Reinforced sheet be equipped with clamping part and non-clamping portion, reinforced sheet it is non-clamping
Portion is gradual change section, and the area of section from clamping part to non-clamping portion gradually becomes smaller, the sample silk fracture for avoiding chucking power from inducing, from
And it ensure that the intact of reinforced sheet and sample silk.
It need to remark additionally, before reinforced sheet does not flatten, the opening area of the open area ratio clamping part in non-clamping portion
Greatly, inside convenient for hot melt adhesive injection reinforced sheet.And in press when flattening, the clamping part for being pressed onto reinforced sheet of trying not, from
And the clamping part shape of reinforced sheet is protected, to make clamping part be easier to be clamped by sample silk test fixture, so press is to reinforcement
The non-clamping portion of piece i.e. a part in gradual change section are flattened, will not when pressing because there is gradual change section
So that reinforced sheet is split, ensure that the quality of reinforced sheet, and non-clamping portion's open area ratio clamping part of the reinforced sheet after flattening
Opening area is small, and so biggish space interior for being partially in clamping part in hot melt adhesive end face will be heated without coming out automatically
Glue is protected inside reinforced sheet, to ensure that the stability that reinforced sheet is connect with sample silk.
PLA end reinforcing body end surface shapes are consistent with the end surface shape of the clamping space of PLA fixtures, such PLA
For the fixture of silk when clamping reinforced sheet, the clamping face of fixture and the contact area of reinforced sheet are bigger, and clamping force is stronger, surveys
The phenomenon that being not in PLA slidings when examination, improve the accuracy of test result.
The dosage standard of hot melt adhesive are as follows: so that hot melt adhesive height is suitable with sample silk diameter.Effectively hot melt adhesive can be avoided to fill
Hot melt adhesive squeezes out excessive, the excessive consequence for being unfavorable for clamp of stiffener volume when excessively causing to flatten.Hot melt adhesive
Volatile materials is not generated during heating, and safety and environmental protection is suitble to close the in-orbit behaviour of small space environment in space station etc.
Make.
Step 200 further include: hot melt adhesive is beaten using battery driving hot melt gun by the two sides in sample silk.By battery powered
Hot melt gun is convenient to use in a variety of places, convenient and efficient when such as outdoor place without socket.
Preferably, reinforced sheet is fixed on PLA using hot melt adhesive by the end reinforcement means of PLA silk material of the invention
Both ends can carry out end reinforcing to multiple diameter, the PLA silk material of a variety of end surface shapes, it is smooth that a variety of press production can be used
Reinforcing end, the PLA silk material after reinforcing can directly be tested clamp, and the test of the PLA silk suitable for 100-150mm adds
Gu the case where capable of effectively avoiding the skidding of the PLA silk material end in drawing process, local deformation from being even broken, to improve
PLA measuring accuracies can obtain accurate PLA of strength parameter.Testing efficiency is high, can survey in a variety of places and environment
PLA intensity are tried, applicability is wide.
As shown in figure 3, the present invention also provides a kind of end bracing means of 3D printing PLA strength tests, including U-shaped
Frame 2, the left end of U-shaped frame 2 and right end are separately installed with cover half device 3 and die device 4, and cover half device 3 includes being mounted on U-shaped frame
The reinforcement sheet mold 5 of 1 left end bottom, reinforcing sheet mold 5 includes bed die 51 and top demoulding 52, top surface and the top demoulding 52 of bed die 51
Bottom surface be in contact, the left side top of U-shaped frame 2 is equipped with oil cylinder 53 by mounting plate, and 53 bottom end of oil cylinder and top demoulding 52 are fixed
Connection.Demoulding is more convenient, saves the manpower for taking out reinforced sheet and time.Reinforce sheet mold 5 and is equivalent to cover half, internal shape
Shape, that is, die cavity is consistent with the outer shape of reinforced sheet for needing to make, and dynamic model block 7 is equivalent to dynamic model, can be inserted into and reinforces sheet mold 5
Inside, dynamic model and cover half compress reinforced sheet together, produce the shape of reinforced sheet.
Die device 4 is mounted on the telescopic rod 6 on 2 right end of U-shaped frame, and telescopic rod 6 can be to be driven by electricity or manpower driving, electricity
It needs to add controller when power drive, to be precisely controlled the flexible stroke of telescopic rod 6, to guarantee that sample silk injecting glue is more convenient.
The left end of contracting bar 6 connects dynamic model block 7, and the side of dynamic model block 7 is equipped with and the consistent gradual change groove 71 of reinforced sheet outer shape, gradual change
The global shape of groove 71 is consistent with the gradual change cross sectional shape of reinforced sheet is added, and reinforces also being provided with gradual change groove 71 inside sheet mold 5,
The gradual change section of reinforced sheet is produced to interact with dynamic model block 7.The left end shape of dynamic model block 7 is in circular bar shape, right end shape
It is similar with angular wheel, there is triangle striped and triangular groove, to facilitate the gradual change section of production reinforced sheet.
It is as follows using the device of the invention production reinforced sheet process:
Plate substrate is reinforced in first production, i.e., is mutually bonded using the scraps of paper of the cylindrical scraps of paper and rotary table annular with bottom cover,
The left end of the cylindrical scraps of paper has scraps of paper lid, and the right end uncovered of the rotary table annular scraps of paper and rotary table annular scraps of paper right-end openings are than circle
The opening area of the cylindricality scraps of paper is big.Then it will reinforce plate substrate to be placed into inside reinforcement sheet mold 5, and make bed die 51 and top demoulding 52
It is affixed.Starting telescopic rod 6 injects dynamic model block 7 in the die cavity reinforced inside sheet mold 5, compresses and reinforces plate substrate, makees in pressure
Under, the reinforced sheet with gradual change section is processed.
The left end of telescopic rod 6 and the side of dynamic model block 7 are equipped with sample silk wears groove 72 interconnected, the side of sample silk wears groove 72
Face is pierced by from the lateral surface of telescopic rod 6 and dynamic model block 7, and sample silk wears groove 72 and clip slot 73 are interconnected, and are located at plastic splint
Between 13 and two folder holes 14 of iron block 12, and the bottom surface of sample silk wears groove 72 is parallel with 12 bottom surface of iron block.Sample silk instant in this way
Both ends are connect with reinforced sheet, and sample silk also can be pulled out easily from sample silk wears groove 72, ensure that the connection of reinforced sheet and sample silk is strong
Degree.Sample silk wears groove 72 is rectangular plate shape, and the length of sample silk wears groove 72 is at least 10-15cm, since sample silk is inside telescopic rod 6
It needs to turn, therefore the sample silk wears groove 72 of sufficient length can turn distance to sample silk sufficient length, avoid having turned apart from mistake
Fracture that is short and causing sample silk.
Dynamic model block 7 with reinforce sheet mold 5 match, dynamic model block 7 and reinforce sheet mold 5 axis on same straight line,
Reinforce the opening of sheet mold 5 towards upper right side, and the axis angle with horizontal plane for reinforcing sheet mold 5 is 30-60 °, is made subsequent
The operation of reinforced sheet injecting glue is more convenient, reduces the outflow and waste pollution of thermal gels.
As shown in Figure 4 and Figure 5, sample silk fixture 1 is also equipped with by clip slot 73 inside the left end of dynamic model block 7.Sample silk fixture 1
Electromagnetic block 11 and iron block 12 including being mounted on 73 bottom end of clip slot and top, 11 top surface of electromagnetic block are connected with plastic splint 13, modeling
Feed collet plate 13 avoids the direct contact wear of electromagnetic block 11 Yu iron block 12, also avoids leaking electricity.12 phase of plastic splint 13 and iron block
Pair face on be equipped with the folder hole 14 positioned at the outside of sample silk wears groove 72, the outer diameter of folder hole 14 is 0.1-0.3mm smaller than the outer diameter of sample silk,
Guarantee to clamp sample silk.When two folder holes 14 are combined, the axis of common axis and dynamic model block 7, reinforcement sheet mold 5 is equal
On the same line, it ensure that sample silk can be stablized to inject at the centroid of reinforced sheet.
Iron block 12 slides up and down inside clip slot 73 and 12 top of iron block is connected by spring 15 with 73 top surface of clip slot.Electricity
When 11 no power of magnetic patch, under the elastic pulling force of spring 15, iron block 12 is not contacted with plastic splint 13, only logical in electromagnetic block 11
When electric attraction iron block 12, iron block 12, which can just decline, to be close to clamp sample silk with plastic splint 13.
Using the device of the invention come as follows the step of carrying out gluing to sample silk:
(1) it after reinforcement sheet mold 5 makes reinforced sheet, is not required to take out reinforced sheet immediately, starting telescopic rod 6 shrinks and makes
Sample silk is inserted into, and one end is placed in inside disease control 14, then makes electromagnetic block by module 7 far from sheet mold 5 is reinforced from sample silk wears groove 72
11, which are powered, attracts iron block 12 to clamp sample silk, and the left end of sample silk is located inside folder hole 14 at this time, and the axis of sample silk passes through reinforced sheet
Centroid.
(2) starting telescopic rod 6 makes dynamic model block 7 close to reinforcement sheet mold 7 but is not inserted into reinforcement sheet mold 5, is inserted into sample silk
Reinforced sheet centroid, and retain glue injection channel between dynamic model block 7 and reinforcement sheet mold 5.Then using hot melt gun by hot melt adhesive from adding
The two sides of the right-end openings injection sample silk of strong piece stop injecting glue after the injection thickness of hot melt adhesive is consistent with sample silk diameter.
(3) starting oil cylinder 53 separates top demoulding 52 with bed die 51, completes demoulding, and sample silk fixture 1 is made to unclamp sample silk, first will
Sample silk is extracted from sample silk wears groove 72, is then taken out reinforced sheet from bed die 51, is carried out pressing operation to reinforced sheet immediately.It flattens
After the completion, the other end of sample silk is also carried out operating such as the bonding of above-mentioned sample silk, reinforced sheet and hot melt adhesive.
Preferably, reinforced sheet producing device of the invention makes reinforced sheet fast and easy, and structure is simply at low cost, and energy
Auxiliary completes the injecting glue attended operation to reinforced sheet and sample silk, vdiverse in function, is not required to take out after not only reinforced sheet completes, and moves
Sample silk fixture 11 in module 7, which clamps sample silk, ensure that sample silk one end is properly inserted reinforced sheet centroid, calibrate PLA silk material plummet side
To effect, improve the accuracy and confidence of the subsequent strength test result of sample silk, and save manpower and time, improve
The efficiency that sample silk end reinforces.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (8)
1. a kind of end reinforcement means of 3D printing PLA strength tests, characterized by the following steps:
Step 100, prefabricated reinforced sheet, and sample silk is placed at the centroid of reinforced sheet;
Step 200 beats two sides in sample silk after melting hot melt adhesive;
Step 300 flattens reinforced sheet, until removing the sample silk with hot melt adhesive after hot melt adhesive solidification sizing.
2. a kind of end reinforcement means of 3D printing PLA strength tests according to claim 1, it is characterised in that: institute
The production method for stating reinforced sheet includes: that the reinforcement to match is prepared according to loads fixture area using the scraps of paper such as A4 paper thickness
Piece.
3. a kind of end reinforcement means of 3D printing PLA strength tests according to claim 1, it is characterised in that: institute
Reinforced sheet is stated equipped with clamping part and non-clamping portion, the outer surface in the non-clamping portion is gradual change section, from the clamping of reinforced sheet
The area of section in portion to non-clamping portion gradually becomes smaller.
4. a kind of end reinforcement means of 3D printing PLA strength tests according to claim 1, it is characterised in that: institute
State step 200 further include: hot melt adhesive is beaten by the two sides in sample silk, the dosage standard of the hot melt adhesive using battery driving hot melt gun
Are as follows: so that hot melt adhesive height is suitable with sample silk diameter.
5. a kind of end reinforcement means of 3D printing PLA strength tests according to claim 1, it is characterised in that: institute
It states reinforced sheet and the step of flattening is completed by press.
6. a kind of end bracing means of 3D printing PLA strength tests, it is characterised in that: including U-shaped frame (2), the U-shaped frame
(2) left end and right end is separately installed with cover half device (3) and die device (4), and the cover half device (3) includes being mounted on U
The reinforcement sheet mold (5) of shape frame (1) left end bottom, the reinforcement sheet mold (5) includes bed die (51) and pushes up demoulding (52), described
The top surface of bed die (51) and the bottom surface on top demoulding (52) are in contact, and the left side top of the U-shaped frame (2) is equipped with by mounting plate
Oil cylinder (53), oil cylinder (53) bottom end are fixedly connected with top demoulding (52);
The die device (4) is mounted on the telescopic rod (6) on U-shaped frame (2) right end, and the left end connection of the telescopic rod (6) is dynamic
The side of module (7), the dynamic model block (7) is equipped with and the consistent gradual change groove (71) of reinforced sheet outer shape, the telescopic rod
(6) side of left end and dynamic model block (7) is equipped with sample silk wears groove (72) interconnected, in the left end of the dynamic model block (7)
Portion also passes through clip slot (73) and is equipped with sample silk fixture (1).
7. a kind of end bracing means of 3D printing PLA strength tests according to claim 6, it is characterised in that: institute
It states dynamic model block (7) and matches with sheet mold (5) are reinforced, the dynamic model block (7) and the axis for reinforcing sheet mold (5) are straight in same
On line, the opening for reinforcing sheet mold (5) is towards upper right side, and the axis angle with horizontal plane for reinforcing sheet mold (5) is 30-
60°。
8. a kind of end bracing means of 3D printing PLA strength tests according to claim 6, it is characterised in that: institute
Stating sample silk fixture (1) includes the electromagnetic block (11) and iron block (12) for being mounted on clip slot (73) bottom end and top, the electromagnetic block
(11) top surface is connected with plastic splint (13), is equipped on the plastic splint (13) and the opposite face of iron block (12) positioned at sample silk
Folder hole (14) on the outside of wears groove (72), the iron block (12) slides up and down inside clip slot (73) and iron block (12) top passes through bullet
Spring (15) is connected with clip slot (73) top surface.
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