Impact pressure test target mold and preparation method of target

Abstract

The invention relates to the technical field of target molds, and provides an impact pressure test target mold, which comprises a target container, a gradienter magnetically attracted or adhered to the outer surface of the target container, a positioning mechanism arranged at the opening part of the target container, and a fixing mechanism arranged on the positioning mechanism and used for connecting a sensor, the positioning and adjusting mechanism is arranged on the positioning mechanism and can drive the sensor to move in the target container through the positioning mechanism and the fixing mechanism; the demolding process for preparing the impact pressure test target is simplified, the tedious steps of forming an embedded channel and then embedding the sensor after gelatin is prepared are avoided, accurate positioning and high installation consistency of the sensor are achieved through the positioning mechanism, and the convenience of preparing the impact pressure test target is improved.

Description

Technical Field

[0001] The invention relates to the technical field of target molds, and in particular to an impact pressure test target mold and a method for preparing the target. Background Art

[0002] Gelatin targets can be used as a standard target to replace muscles because of their uniform and transparent density, which is the same as that of soft tissues. They are widely used in impact and penetration research. The impact pressure test target measures the impact pressure at each point in the gelatin target by arranging a certain number of sensors in an array inside the gelatin target. The traditional preparation method is to first heat the hot metal rod, insert it into the gelatin target, melt the gelatin to obtain the sensor pre-embedded channel, then insert the wired sensor into the pre-embedded channel, and finally pour a small amount of gelatin liquid into the pre-embedded channel until it is flush with the gelatin surface. After cooling, it is used to measure the impact pressure. The above method has inaccurate positioning of the pre-embedded channel, easily causes sensor positioning deviation, cannot adjust the lateral position, and the operation steps are cumbersome. Therefore, there is an urgent need for a mold for making an impact pressure test target with accurate sensor positioning, high consistency and simple preparation process. Summary of the invention

[0003] To achieve the above-mentioned objectives, the present invention provides an impact pressure test target mold, comprising a target container, a level meter magnetically attracted or adhered to the outer surface of the target container, a positioning mechanism arranged at the mouth of the target container, and a fixing mechanism arranged on the positioning mechanism and used to connect a sensor, and also comprising a positioning adjustment mechanism arranged on the positioning mechanism and capable of moving the sensor in the target container through the positioning mechanism and the fixing mechanism.

[0004] Optionally, the positioning mechanism includes a horizontal plate placed on the upper end surface of the target container, N guide rails opened on the horizontal plate, and M array holes opened on the horizontal plate, wherein N is a positive integer greater than or equal to 2, and the guide rails are symmetrically arranged about the vertical center line of the horizontal plate, and M is a positive integer greater than or equal to 1.

[0005] Optionally, the fixing mechanism includes a bracket movably inserted into the array hole, and a thin rod connected to the lower end of the bracket, the fixing mechanism also includes a sleeve fixedly connected to the lower end of the thin rod, the sensor is detachably arranged in the sleeve, and a cable is connected to the sensor at one end and to a data acquisition instrument at the other end, and a portion of the cable is passed through the thin rod.

[0006] Optionally, the number of the brackets is set to be multiple, and the multiple brackets are arranged in the same straight line.

[0007] Optionally, a wire trough is provided at the mouth of the target container, and the wire trough is used for laying the cable, and a size of the wire trough in a first direction is greater than or equal to 50 mm, and a size in a second direction is greater than or equal to 1 mm, wherein the first direction and the second direction are arranged perpendicular to each other.

[0008] Optionally, the diameter of the thin rod is smaller than the diameter of the array hole, and there is a gap between the thin rod and the array hole, and the size of the gap is smaller than 1 mm, so that when the thin rod is subjected to external force, it can move vertically in the array hole.

[0009] Optionally, the fixing mechanism also includes a fastening portion, which is movably mounted outside the bracket, and the lower end of the fastening portion is arranged to contact each other with the upper end surface of the cross plate, wherein the fastening portion is made of elastic material to fix the bracket in the array hole through the coordination of the elastic reset clamping force of the bracket in the radial direction and the contact force between the lower end and the upper end surface of the cross plate.

[0010] Optionally, the positioning and adjustment mechanism includes a bolt movably arranged in the guide rail, the bolt is movably inserted in a through hole, the through hole is opened on a positioning block, the positioning block is arranged on the lower end face of the cross plate, the external thread sleeve of the bolt is provided with a nut, and the upper end face of the nut and the lower end face of the positioning block can be arranged to contact each other.

[0011] To achieve the above object, the present invention also provides a method for preparing an impact pressure test target, using the impact pressure test target mold to prepare a test target, comprising the following steps:

[0012] S: driving the positioning adjustment mechanism to adjust the position of the sensor in the horizontal direction in the target container through the positioning mechanism and the fixing mechanism;

[0013] S: operating the fastening part to adjust the position of the sensor in the vertical direction through the bracket, the thin rod and the ferrule;

[0014] S: After the S and S steps are completed, the horizontal plate is fixed to the mouth of the target container by the positioning adjustment mechanism. S: After the S step is completed, the level is magnetically attracted or adhered to the target container to adjust the target container to be placed horizontally;

[0015] S: After step S is completed, pour gelatin solution into the target container and cool it in an environment of 0℃~25℃ for 24h;

[0016] S: After the gelatin solution solidifies, cut off the thin rods protruding outside the solidified gelatin so that the remaining thin rods are flush with the upper surface of the gelatin;

[0017] S: Put the solidified gelatin obtained in step S into a refrigerator at 4°C for 24 hours and then turn it upside down on a tray;

[0018] S: Pour hot water onto the outer surface of the target container so that the solidified gelatin melts and separates from the target container to obtain a gelatin target.

[0019] Optionally, there is a distance between the lower end surface of the horizontal plate and the upper end surface of the gelatin liquid in the vertical direction, and the size of the distance is greater than or equal to 1 cm.

[0020] The beneficial effects of the present invention are as follows:

[0021] The present invention simplifies the demoulding process of impact pressure test target preparation, avoids the tedious steps of preparing gelatin, opening a pre-buried channel and then embedding the sensor, realizes precise positioning of the sensor and a high degree of installation consistency through the positioning mechanism, and improves the convenience of impact pressure test target preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the positioning mechanism;

[0023] Figure 2 This is a schematic diagram of the impact pressure test target mold;

[0024] Figure 3 A system schematic diagram of a method for preparing a shock pressure test target;

[0025] Figure 4 Flow chart of the method for preparing a shock pressure test target.

[0026] Reference numerals

[0027] Positioning mechanism 1, target container 2, level 3, sensor 4, cable 5, tray 6, protective gear 7, data acquisition instrument 8, cross plate 11, guide rail 12, array hole 13, positioning block 14, bolt 15, nut 16, bracket 17, fastening part 18, wire groove 21, through hole 141, thin rod 171, and ferrule 172. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0029] In view of the problems existing in the prior art, an embodiment of the present invention provides an impact pressure test target mold, such as Figure 2 As shown, the impact pressure test target mold includes a target container 2, a level 3 magnetically attracted or adhered to the outer surface of the target container 2, a positioning mechanism 1 arranged at the mouth of the target container 2, and a fixing mechanism (unnumbered) arranged on the positioning mechanism 1 and used to connect the sensor 4, and also includes a positioning adjustment mechanism (unnumbered) arranged on the positioning mechanism 1 and capable of moving the sensor 4 in the target container 2 through the positioning mechanism 1 and the fixing mechanism.

[0030] The setting of the fixing mechanism and the positioning adjustment mechanism in the present invention can adjust the sensor 4 in the horizontal direction and the vertical direction, so that the precise positioning of the sensor and a high degree of installation consistency can be achieved, and the convenience of preparing the impact pressure test target is improved.

[0031] In one embodiment, if Figure 1 As shown, the positioning mechanism 1 includes a transverse plate 11 placed on the upper end surface of the target container 2, N guide rails 12 opened on the transverse plate 11, and M array holes 13 opened on the transverse plate 11, wherein N is a positive integer greater than or equal to 2, and the guide rails 12 are symmetrically arranged about the vertical center line of the transverse plate 11, and M is a positive integer greater than or equal to 1.

[0032] exist Figure 1 In the example, there are four guide rails 12, and the four guide rails 12 are divided into two groups, each group has two guide rails, wherein the two groups of guide rails 12 are symmetrically arranged about the vertical center line of the horizontal plate 11. In other examples, there are not only two groups, and each group is not limited to two guide rails. The two guide rails 12 in each group are symmetrically arranged about the horizontal center line of the horizontal plate 11. Figure 1In the example, the array holes 13 are arranged in five rows, and the five rows are arranged at equal distances, and each row is provided with 19 array holes 13. Of course, in other examples, it is not limited to five rows, and each row is not limited to 19 array holes 13.

[0033] In one embodiment, if Figure 1 As shown, the fixing mechanism includes a bracket 17 movably inserted into the array hole 13, and a thin rod 171 connected to the lower end of the bracket 17, and the fixing mechanism also includes a sleeve 172 fixedly connected to the lower end of the thin rod 171, the sensor 4 is detachably arranged in the sleeve 172, and a cable 5 is connected to the sensor 4 at one end and connected to the data acquisition instrument 8 at the other end, and a part of the cable 5 is passed through the thin rod 171.

[0034] In one embodiment, if Figure 1 or Figure 2 As shown, the number of the brackets 17 is set to be several, and the several brackets 17 are arranged on the same straight line.

[0035] In one embodiment, if Figure 2 As shown, the mouth of the target container 2 is provided with a wire groove 21, and the wire groove 21 is used for laying the cable 5. The size of the wire groove 21 in the first direction is greater than or equal to 50 mm, and the size in the second direction is greater than or equal to 1 mm, wherein the first direction and the second direction are arranged perpendicular to each other. Such an arrangement can prevent the cable 5 from being cut off.

[0036] In one embodiment, if Figure 2 As shown, the diameter of the thin rod 171 is smaller than the hole diameter of the array hole 13, and there is a gap between the thin rod 171 and the array hole 13, and the size of the gap is less than 1 mm, so that when the thin rod 171 is subjected to external force, it can move in the vertical direction in the array hole 13.

[0037] In one embodiment, if Figure 2 As shown, the fixing mechanism further includes a fastening portion 18, which is movably sleeved outside the bracket 17, and the lower end of the fastening portion 18 is mutually in contact with the upper end surface of the horizontal plate 11, wherein the fastening portion 18 is made of elastic material, so as to fix the bracket 17 in the array hole 13 through the coordination of the elastic reset clamping force of the bracket 17 in the radial direction and the in contact force between the lower end and the upper end surface of the horizontal plate 11. The fastening portion 18 is a rubber sleeve, but is not limited to a rubber sleeve.

[0038] In one embodiment, if Figure 1As shown, the positioning and adjusting mechanism includes a bolt 15 movably arranged in the guide rail 12, the bolt 15 is movably inserted in a through hole 141, the through hole 141 is opened on the positioning block 14, the positioning block 14 is arranged on the lower end surface of the cross plate 11, the bolt 15 is externally threaded with a nut 16, and the upper end surface of the nut 16 and the lower end surface of the positioning block 14 can be arranged to contact each other.

[0039] In view of the problems existing in the prior art, an embodiment of the present invention further provides a method for preparing an impact pressure test target, such as Figure 3 and Figure 4 As shown, the method for preparing the impact pressure test target adopts the impact pressure test target mold to prepare the test target, comprising the following steps:

[0040] S1: driving the positioning adjustment mechanism to adjust the horizontal position of the sensor 4 in the target container 2 through the positioning mechanism 1 and the fixing mechanism;

[0041] S2: operate the fastening part 18 to adjust the position of the sensor 4 in the vertical direction through the bracket 17, the thin rod 171 and the clamping sleeve 172;

[0042] S3: After steps S1 and S2 are completed, the horizontal plate 11 is fixed to the mouth of the target container 2 by a positioning and adjusting mechanism;

[0043] S4: After step S3 is completed, the level 3 is magnetically attracted or adhered to the target container 2 to adjust the target container 2 to be placed horizontally;

[0044] S5: After step S4 is completed, pour gelatin solution into the target container 2 and cool it in an environment of 0°C to 25°C for 24 hours;

[0045] S6: After the gelatin liquid is solidified, the thin rods 171 protruding out of the solidified gelatin are cut off so that the remaining thin rods 171 are flush with the upper surface of the gelatin;

[0046] S7: Put the solidified gelatin obtained in step S6 into a refrigerator at 4°C for 24 hours and then turn it upside down on the tray 6;

[0047] S8: Pour hot water onto the outer surface of the target container 2 so that the solidified gelatin is melted by the heat and separated from the target container 2, thereby obtaining a gelatin target.

[0048] In one embodiment, there is a distance between the lower end surface of the horizontal plate 11 and the upper end surface of the gelatin liquid in the vertical direction, and the size of the distance is greater than or equal to 1 cm.

[0049] Specifically,

[0050] Positioning mechanism preparation. Figure 1As shown, the positioning block 14 is placed on the bottom surface of the horizontal plate 11, and the bolts 15 are inserted into the guide rails 12 and the through holes 141 in sequence and connected with the nuts 16. There is no pre-tightening force between the nuts 16 and the positioning block 14, ensuring that the positioning block 14 can slide freely along the guide rails 12. The sensor 4 is pressed into the ferrule 172, the cable 5 is connected, and the thin rod 171 is inserted into the array hole 13 and tightly matched with the fastening part 18 to prevent the bracket 17 and the sensor 4 from sliding downward. The spacing between the bracket 17 and the sensor 4 can be adjusted through the array hole 13, and the appropriate number of brackets 17 and sensors 4 can be selected according to the test requirements.

[0051] Preparation of impact pressure test target. Magnetize or stick the level 3 to the front and side of the target container 2. Use the level 3 as a reference to adjust the position of the target container 2 to ensure that it is placed horizontally. Pour the gelatin solution into the target container 2, and place the positioning mechanism 1 equipped with the sensor 4 and the cable at the mouth of the target container 2. The positioning block 14 holds the side of the target container 2 tightly. The distance between the bottom surface of the positioning mechanism 1 and the gelatin solution is ≥1cm, so that the thin rod 171 can be cut, as shown in the figure. Figure 2 As shown. Cool in an environment of 0℃~25℃ for 24 hours. After the gelatin solidifies, cut off some of the thin rods 171 so that the remaining thin rods 171 in the gelatin are flush with the upper surface of the gelatin. Put it in a refrigerator at 4℃ for 24 hours. Then turn the impact pressure test target mold upside down on the tray 6. The cable 5 needs to be led out from the wire groove 21 to prevent the cable 5 from being cut by the wall of the target container 2. Sprinkle hot water on the outer surface of the target container 2. The gelatin target will melt due to local heat and separate from the target container 2. The impact pressure test target is ready. Paste protective gear 7, clothing, bulletproof vests, etc. on the impact / penetration surface of the impact pressure test target, and then connect the other end of the cable 5 to the data acquisition instrument 8 to realize the impact pressure test, as shown in the figure. Figure 3 and Figure 4 shown.

[0052] The beneficial effects of the present invention are as follows:

[0053] The present invention simplifies the demoulding process of impact pressure test target preparation, avoids the tedious steps of preparing gelatin, opening a pre-buried channel and then embedding the sensor, realizes precise positioning of the sensor and a high degree of installation consistency through the positioning mechanism, and improves the convenience of impact pressure test target preparation.

[0054] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. An impact pressure test target mold, characterized in that: The invention comprises a target container (2), a level (3) magnetically attracted or adhered to the outer surface of the target container (2), a positioning mechanism (1) arranged at the mouth of the target container (2), and a fixing mechanism arranged on the positioning mechanism (1) and used to connect a sensor (4), and also comprises a positioning adjustment mechanism arranged on the positioning mechanism (1) and capable of moving the sensor (4) in the target container (2) through the positioning mechanism (1) and the fixing mechanism.

2. The impact pressure test target mold according to claim 1, characterized in that: The positioning mechanism (1) comprises a transverse plate (11) placed on the upper end surface of the target container (2), N guide rails (12) provided on the transverse plate (11), and M array holes (13) provided on the transverse plate (11), wherein N is a positive integer greater than or equal to 2, and M is a positive integer greater than or equal to 1.

3. The impact pressure test target mold according to claim 2, characterized in that: The fixing mechanism comprises a bracket (17) movably inserted into the array hole (13), and a thin rod (171) connected to the lower end of the bracket (17), and the fixing mechanism also comprises a sleeve (172) fixedly connected to the lower end of the thin rod (171), the sensor (4) is detachably arranged in the sleeve (172), and a cable (5) having one end connected to the sensor (4) and the other end connected to the data acquisition instrument (8), and a part of the cable (5) is passed through the thin rod (171).

4. The impact pressure test target mold according to claim 3, characterized in that: The mouth of the target container (2) is provided with a wire groove (21), the wire groove (21) is used for laying the cable (5), and the size of the wire groove (21) in the first direction is greater than or equal to 50 mm, and the size in the second direction is greater than or equal to 1 mm.

5. The impact pressure test target mold according to claim 3, characterized in that: The diameter of the thin rod (171) is smaller than the diameter of the array hole (13), and there is a gap between the thin rod (171) and the array hole (13), so that when the thin rod (171) is subjected to external force, it can move in the vertical direction within the array hole (13).

6. The impact pressure test target mold according to claim 3, characterized in that: The fixing mechanism further comprises a fastening portion (18), wherein the fastening portion (18) is movably sleeved outside the bracket (17), and the lower end of the fastening portion (18) is arranged to contact with the upper end surface of the transverse plate (11), wherein the fastening portion (18) is made of an elastic material, so as to fix the bracket (17) in the array hole (13) through the coordination of the elastic reset clamping force of the bracket (17) in the radial direction and the contact force between the lower end and the upper end surface of the transverse plate (11).

7. The impact pressure test target mold according to claim 3, characterized in that: The positioning and adjusting mechanism comprises a bolt (15) movably arranged in the guide rail (12), the bolt (15) being movably inserted in a through hole (141), the through hole (141) being provided on a positioning block (14), the positioning block (14) being provided on the lower end surface of the transverse plate (11), the bolt (15) being externally threadedly sleeved with a nut (16), the upper end surface of the nut (16) and the lower end surface of the positioning block (14) being arranged to contact each other.

8. A method for preparing an impact pressure test target, characterized in that: The method of preparing a test target using the impact pressure test target mold according to any one of claims 1 to 7 comprises the following steps: S1: driving the positioning adjustment mechanism to adjust the position of the sensor (4) in the target container (2) in the horizontal direction through the positioning mechanism (1) and the fixing mechanism; S2: operating the fastening portion (18) to adjust the position of the sensor (4) in the vertical direction through the bracket (17), the thin rod (171) and the clamping sleeve (172); S3: After steps S1 and S2 are completed, the horizontal plate (11) is fixed to the mouth of the target container (2) by a positioning and adjusting mechanism; S4: After step S3 is completed, the level (3) is magnetically attracted or adhered to the target container (2) to adjust the target container (2) to be placed horizontally; S5: After step S4 is completed, pour gelatin solution into the target container (2) and cool it in an environment of 0°C to 25°C for 24 hours; S6: After the gelatin liquid solidifies, the thin rod (171) protruding out of the solidified gelatin is cut off, so that the remaining thin rod (171) is flush with the upper surface of the gelatin; S7: Put the solidified gelatin obtained in step S6 into a refrigerator at 4° C. for 24 hours and then turn it upside down on a tray (6); S8: Pour hot water onto the outer surface of the target container (2) so that the solidified gelatin is melted by the heat and separated from the target container (2), thereby obtaining a gelatin target.

9. The method for preparing an impact pressure test target according to claim 8, characterized in that: There is a distance between the lower end surface of the horizontal plate (11) and the upper end surface of the gelatin liquid in the vertical direction, and the size of the distance is greater than or equal to 1 cm.

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