Automatic tensile test device

Abstract

The utility model relates to the technical field of tensile testing machines, and discloses an automatic tensile testing device which comprises a tensile testing machine body, a tensile head assembly and a tensile seat assembly, the tensile seat assembly is installed on the tensile testing machine body, and the tensile head assembly is located above the tensile seat assembly. The stretching head assembly has the freedom degree of moving in the height direction of the stretching test machine body. The stretching seat assembly comprises a bearing block, the bearing block has the freedom degree of moving in the X-axis direction and the Y-axis direction on the horizontal plane, a stretching channel groove is formed in one side of the bearing block in a penetrating mode, the stretching channel groove penetrates through the top of the bearing block, and the width of the stretching channel groove is gradually reduced from bottom to top. A plurality of different types of stretching channels are formed in the side wall of the stretching disc in the circumferential direction of the stretching disc. Different samples can be automatically moved to a testing station for testing, the device can be compatible with various sample pieces, and automatic sample feeding and automatic testing are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tensile testing machines, in particular to an automatic tensile testing device. Background Art

[0002] Most existing tensile testing machines are manually sampled before stretching, and the entire process requires human intervention. Some automatic sample feeding devices can only feed tensile samples of a single specification, which has certain limitations in application. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automated tensile testing device that can automatically move different specimens to a testing station for testing, is compatible with a variety of samples, and realizes automatic sampling and automatic testing.

[0004] The purpose of the utility model is achieved through the following technical solutions: an automated tensile test device, comprising a tensile test body, a tensile head assembly and a tensile seat assembly, wherein the tensile seat assembly is mounted on the tensile test body, the tensile head assembly is located above the tensile seat assembly, and the tensile head assembly has the freedom to move along the height direction of the tensile test body;

[0005] The stretching seat assembly includes a supporting block, which has the freedom to move along the X-axis and Y-axis directions on a horizontal plane. A stretching channel groove is opened through one side of the supporting block. The stretching channel groove passes through the top of the supporting block, and the width of the stretching channel groove gradually decreases from bottom to top. The stretching head assembly includes a rotatably arranged stretching disk, and the side wall of the stretching disk is opened with multiple different types of stretching channels along its own circumferential direction.

[0006] In some embodiments, the tensile testing machine body includes a stretching machine base, columns and a middle cross beam. Two columns are vertically fixed on the top of the stretching machine base. The top ends of the two columns are connected by a cover plate. The middle cross beam is located between the two columns. The two ends of the middle cross beam are respectively slidably connected to the two columns, and the middle cross beam moves along the height direction of the columns.

[0007] In some embodiments, the stretching seat assembly also includes a stretching specimen stage, which includes a carrier plate and a clamping block. The carrier plate is adapted to be inserted into the stretching channel groove, and the cross-sectional shape of the carrier plate matches the cross-sectional shape of the stretching channel groove. Clamping blocks are fixed at both ends of the top of the carrier plate.

[0008] In some embodiments, the supporting block is vertically provided with a ball head plunger in the stretching channel groove, a limiting groove is opened at the bottom of the supporting plate, a limiting baffle is fixed in the stretching channel groove, and when the stretching specimen loading platform is against the limiting baffle, the ball head of the ball head plunger is adapted in the limiting groove.

[0009] In some embodiments, the stretching seat assembly also includes a compression sample stage, a top surface of the compression sample stage is provided with a plurality of sample grooves, a bottom of the compression sample stage is provided with a positioning hole, a positioning pin is fixed to the top of the supporting block, and the positioning pin is adapted to be inserted into the positioning hole.

[0010] In some embodiments, the stretching seat assembly also includes an X-axis lead screw linear moving module, a Y-axis lead screw linear moving module and a base, the base is installed on the top surface of the stretching machine base, the X-axis lead screw linear moving module is installed on the base, the Y-axis lead screw linear moving module is installed on the X-axis slider of the X-axis lead screw linear moving module, and the supporting block is installed on the Y-axis slider of the Y-axis lead screw linear moving module.

[0011] In some embodiments, the stretching head assembly also includes a mounting seat and a bearing seat, two bearing seats are fixed at intervals at the bottom of the mounting seat, a rotating shaft is arranged between the two bearing seats, both ends of the rotating shaft are rotatably connected to the two bearing seats through bearings, and the stretching disk key is connected to the rotating shaft.

[0012] In some embodiments, a tension and compression sensor is installed at the bottom of the middle cross beam, the tension and compression sensor is connected to a cross joint, and the cross joint is connected to the mounting seat.

[0013] In some embodiments, a motor seat is fixed to the end face of one of the bearing seats away from the stretching disk, a motor is mounted on the motor seat, an output shaft of the motor is connected to a first gear, a second gear is mounted on the rotating shaft, and the second gear meshes with the first gear.

[0014] In some embodiments, an optical coupling baffle is connected to the end face of the second gear, the optical coupling baffle is annular, a slot-type optical coupling is installed on the motor base, and a portion of the optical coupling baffle is located in the slot of the slot-type optical coupling.

[0015] The beneficial effects of the utility model are:

[0016] The carrier block has the freedom of movement along the X-axis and Y-axis directions, and can move the samples on the carrier block to the test station in sequence for testing. Different types of stretching channels are provided on the stretching disk. Stretching channels of different types and sizes are compatible with stretching samples of different specifications, thereby realizing an automated process without manual replacement of the stretching fixture, and realizing automatic sampling and automatic testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an automated tensile testing device of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a stretching seat assembly in an automated stretching test device of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a stretching disk in an automated stretching test device of the utility model;

[0020] Figure 4 It is an exploded diagram of a stretching head assembly in an automated stretching test device of the utility model;

[0021] Figure 5 This is a structural schematic diagram of a load-bearing block in an automated tensile testing device of the utility model;

[0022] Figure 6 It is a structural schematic diagram of a tensile specimen stage in an automated tensile testing device of the utility model;

[0023] Figure 7 It is a structural schematic diagram of a compression sample stage in an automated tensile testing device of the utility model;

[0024] In the figure, 1-stretching machine base, 2-bearing block, 3-stretching channel groove, 4-stretching disk, 5-stretching channel, 6-column, 7-cover plate, 8-middle beam, 9-stretching sample stage, 10-carrying plate, 11-clamping block, 12-ball plunger, 13-limiting groove, 14-limiting baffle, 15-compression sample stage, 16-positioning hole, 17-positioning pin, 18-X-axis lead screw linear moving module, 19-Y-axis lead screw linear moving module, 20-X-axis slider, 21-Y-axis slider, 22-base, 23-mounting seat, 24-bearing seat, 25-rotating shaft, 26-bearing, 27 tension and compression sensor, 28-cross joint, 29-motor seat, 30-motor, 31-first gear, 32-second gear, 33-optical coupler baffle, 34-slot type optical coupler. DETAILED DESCRIPTION

[0025] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0026] Embodiment 1: Figures 1 to 7As shown, an automated stretching test device includes a stretching test body, a stretching head assembly and a stretching seat assembly, wherein the stretching seat assembly is mounted on the stretching test body, the stretching head assembly is located above the stretching seat assembly, and the stretching head assembly has the freedom to move along the height direction of the stretching test body; the stretching seat assembly includes a bearing block 2, the bearing block 2 has the freedom to move along the X-axis and Y-axis directions on a horizontal plane, a stretching channel groove 3 is penetrated through one side of the bearing block 2, the stretching channel groove 3 passes through the top of the bearing block 2, and the width of the stretching channel groove 3 gradually decreases from bottom to top, and the stretching head assembly includes a rotatably arranged stretching disk 4, the stretching disk 4 The side wall is provided with a plurality of stretching channels 5 of different types along its circumferential direction. The carrier block 2 can be equipped with a plurality of specimens at a time. Since the carrier block 2 has the freedom of movement along the X-axis and the Y-axis, the specimens on the carrier block 2 can be moved to the test station in sequence for testing. The specimens are clamped by the stretching disk 4 in the stretching head assembly. Since the stretching disk 4 is provided with different types of stretching channels 5, stretching channels of different types and sizes are compatible with stretching specimens of different specifications. The stretching and compression of the specimens are completed in cooperation with the vertical movement of the stretching disk 4, thereby realizing an automated process without the need for manual replacement of the stretching fixture, and realizing automatic sampling and automatic testing.

[0027] Furthermore, if Figure 1 As shown, the tensile testing machine body includes a tensile machine base 1, columns 6 and a middle cross beam 8. Two columns 6 are vertically fixed on the top of the tensile machine base 1. The top ends of the two columns 6 are connected by a cover plate 7. The middle cross beam 8 is located between the two columns 6. The two ends of the middle cross beam 8 are respectively slidably connected to the two columns 6. The middle cross beam 8 moves along the height direction of the columns 6. The middle cross beam 8 can be installed on the columns 6 by a screw drive, that is, the screw is rotatably installed on the column 6, and the middle cross beam 8 is threaded on the screw to realize the up and down movement of the middle cross beam 8, so as to drive the tensile head assembly to move up and down for testing.

[0028] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 5 and Figure 6As shown, the stretching seat assembly also includes a stretching sample stage 9, and the stretching sample stage 9 includes a carrier plate 10 and a clamping block 11. The carrier plate 10 is adapted in the stretching channel groove 3, and the cross-sectional shape of the carrier plate 10 matches the cross-sectional shape of the stretching channel groove 3. The clamping blocks 11 are fixed at both ends of the top of the carrier plate 10, and the bearing block 2 is vertically provided with a ball head plunger 12 in the stretching channel groove 3. A limiting groove 13 is provided at the bottom of the carrier plate 10, and a limiting baffle 14 is fixed in the stretching channel groove 3. When the stretching sample stage 9 is against the limiting baffle 14, the ball head of the ball head plunger 12 is adapted in the limiting groove 13. When the tensile test is performed on the sample, the stretching sample stage 9 is installed on the carrier block 2, and the stretching sample stage 9 is pulled out from the stretching channel groove 3. One end slides in, the carrier plate 10 will contact and compress the ball plunger 12, so that the ball head of the ball plunger 12 is squeezed and moved downward, so that the carrier plate 10 can smoothly pass through the ball plunger 12, and when the carrier plate 10 moves to abut against the limiting baffle 14, at this time, the limiting groove 13 corresponds to the ball plunger 12, and the ball head of the ball plunger 12 pops out and is stuck in the limiting groove 13, completing the tooling of the tensile specimen carrier 9. Since the width of the stretching channel groove 3 gradually decreases from bottom to top, and the cross-sectional shape of the carrier plate 10 matches the cross-sectional shape of the stretching channel groove 3, the stretching specimen carrier 9 cannot pass through the top of the stretching channel groove 3, so that when the stretching head assembly clamps the sample for stretching, the carrier plate 10 is stuck in the stretching channel groove 3 to bear the load, thereby realizing the tensile test of the sample.

[0029] Embodiment 3: Based on Embodiment 1, Figure 1 and Figure 7 As shown, the stretching seat assembly also includes a compression sample stage 15, a top surface of the compression sample stage 15 is provided with a plurality of sample grooves, a bottom of the compression sample stage 15 is provided with a positioning hole 16, a positioning pin 17 is fixed to the top of the support block 2, and the positioning pin 17 is adapted in the positioning hole 16. When a compression test is performed on the sample, the compression sample stage 15 is installed on the support block 2, and the positioning installation of the compression sample stage 15 is completed by the cooperation of the positioning pin 17 and the positioning hole 16. A plurality of samples are placed in the sample grooves, and the compression test is performed by pressing the sample down through the stretching head assembly.

[0030] Embodiment 4: Based on Embodiment 1, Figure 1 and Figure 2As shown, the stretching seat assembly also includes an X-axis lead screw linear moving module 18, a Y-axis lead screw linear moving module 19 and a base 22. The base 22 is installed on the top surface of the stretching machine base 1, the X-axis lead screw linear moving module 18 is installed on the base 22, the Y-axis lead screw linear moving module 19 is installed on the X-axis slider 20 of the X-axis lead screw linear moving module 18, and the bearing block 2 is installed on the Y-axis slider 21 of the Y-axis lead screw linear moving module 19. The X-axis slider 20 on the X-axis lead screw linear moving module 18 can move along the X-axis direction to drive the sample to move along the X-axis direction, and the Y-axis slider 21 on the Y-axis lead screw linear moving module 18 can move along the Y-axis direction to drive the sample to move along the Y-axis direction, so that the sample has two degrees of freedom of movement in two directions, so that samples at different positions can be moved to the stretching test station in turn for testing.

[0031] Embodiment 5: Based on embodiment 4, Figure 1 , Figure 3 and Figure 4 As shown, the stretching head assembly also includes a mounting seat 23 and a bearing seat 24. Two bearing seats 24 are fixed at intervals at the bottom of the mounting seat 23. A rotating shaft 25 is arranged between the two bearing seats 24. Both ends of the rotating shaft 25 are rotatably connected to the two bearing seats 24 through bearings 26. The stretching disk 4 is key-connected to the rotating shaft 25. A tension and compression sensor 27 is installed at the bottom of the middle cross beam 8. The tension and compression sensor 27 is connected to a cross joint 28. The cross joint 28 is connected to the mounting seat 23. The mounting seat 23 is driven up and down through the middle cross beam 8 to drive the stretching plate 4 to move. The stretching disc 4 moves up and down to complete the test, and the pressure and tension during the test are detected by the tension and compression sensor 27; a motor seat 29 is fixed to the end face of one of the bearing seats 24 away from the stretching disc 4, and a motor 30 is installed on the motor seat 29. The output shaft of the motor 30 is connected to a first gear 31, and a second gear 32 is mounted on the rotating shaft 25. The second gear 32 engages with the first gear 31. The motor 30 drives the rotating shaft 25 to rotate through the engagement of the first gear 31 and the second gear 32, and the rotating shaft 25 drives the stretching disc 4 to deflect to switch the stretching channel 5.

[0032] Furthermore, if Figure 4 As shown, the end face of the second gear 32 is connected to an optical coupling baffle 33, which is annular. A slot-type optical coupling 34 is installed on the motor base 29, and a part of the optical coupling baffle 33 is located in the slot of the slot-type optical coupling 34. The cooperation between the slot-type optical coupling 34 and the optical coupling baffle 33 is used to calibrate the zero point position of the rotation direction of the stretching disk 4, thereby realizing the precise positioning of the stretching disk 4.

[0033] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; and it is known to those skilled in the art that the beneficial effects to be achieved by the present invention are only to achieve better beneficial effects under specific circumstances compared with the current implementation schemes in the prior art, rather than to directly achieve the best use effect in the industry.

[0034] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. An automated tensile testing device, characterized in that: It comprises a stretching test machine body, a stretching head assembly and a stretching seat assembly, wherein the stretching seat assembly is mounted on the stretching test machine body, the stretching head assembly is located above the stretching seat assembly, and the stretching head assembly has the freedom to move along the height direction of the stretching test machine body; The stretching seat assembly comprises a bearing block (2), the bearing block (2) having the freedom to move along the X-axis and Y-axis directions on a horizontal plane, a stretching channel groove (3) penetrating one side of the bearing block (2), the stretching channel groove (3) passing through the top of the bearing block (2), the width of the stretching channel groove (3) gradually decreasing from bottom to top, and the stretching head assembly comprises a rotatably arranged stretching disk (4), the side wall of the stretching disk (4) being provided with a plurality of different types of stretching channels (5) along its own circumferential direction.

2. An automated tensile testing device according to claim 1, characterized in that: The tensile testing machine body comprises a tensile machine base (1), columns (6) and a middle cross beam (8); two columns (6) are vertically fixed on the top of the tensile machine base (1); the top ends of the two columns (6) are connected via a cover plate (7); the middle cross beam (8) is located between the two columns (6); the two ends of the middle cross beam (8) are respectively slidably connected to the two columns (6); and the middle cross beam (8) moves along the height direction of the columns (6).

3. An automated tensile testing device according to claim 2, characterized in that: The stretching seat assembly also includes a stretching specimen stage (9), the stretching specimen stage (9) including a carrier plate (10) and a clamping block (11), the carrier plate (10) being adapted to fit within the stretching channel groove (3), the cross-sectional shape of the carrier plate (10) matching the cross-sectional shape of the stretching channel groove (3), and clamping blocks (11) being fixed to both ends of the top of the carrier plate (10).

4. An automated tensile testing device according to claim 3, characterized in that: The bearing block (2) is vertically provided with a ball plunger (12) in the stretching channel groove (3); a limit groove (13) is provided at the bottom of the carrier plate (10); a limit stopper (14) is fixed in the stretching channel groove (3); when the stretching specimen stage (9) abuts against the limit stopper (14), the ball head of the ball plunger (12) fits in the limit groove (13).

5. The automated tensile testing device according to claim 2, characterized in that: The stretching seat assembly also includes a compression sample stage (15), a top surface of the compression sample stage (15) is provided with a plurality of sample grooves, a bottom surface of the compression sample stage (15) is provided with a positioning hole (16), a positioning pin (17) is fixed to the top of the support block (2), and the positioning pin (17) is adapted to fit in the positioning hole (16).

6. An automated tensile testing device according to claim 4 or 5, characterized in that: The stretching seat assembly also includes an X-axis lead screw linear motion module (18), a Y-axis lead screw linear motion module (19) and a base (22), wherein the base (22) is mounted on the top surface of the stretching machine base (1), the X-axis lead screw linear motion module (18) is mounted on the base (22), the Y-axis lead screw linear motion module (19) is mounted on the X-axis slider (20) of the X-axis lead screw linear motion module (18), and the bearing block (2) is mounted on the Y-axis slider (21) of the Y-axis lead screw linear motion module (19).

7. An automated tensile testing device according to claim 2, characterized in that: The stretching head assembly further comprises a mounting seat (23) and a bearing seat (24); two bearing seats (24) are fixed at intervals at the bottom of the mounting seat (23); a rotating shaft (25) is arranged between the two bearing seats (24); both ends of the rotating shaft (25) are rotatably connected to the two bearing seats (24) via bearings (26); and the stretching disk (4) is key-connected to the rotating shaft (25).

8. An automated tensile testing device according to claim 7, characterized in that: A tension and compression sensor (27) is installed at the bottom of the middle cross beam (8), the tension and compression sensor (27) is connected to a cross joint (28), and the cross joint (28) is connected to the mounting seat (23).

9. An automated tensile testing device according to claim 8, characterized in that: A motor seat (29) is fixed to the end surface of one of the bearing seats (24) away from the stretching disk (4), a motor (30) is mounted on the motor seat (29), an output shaft of the motor (30) is connected to a first gear (31), a second gear (32) is sleeved on the rotating shaft (25), and the second gear (32) meshes with the first gear (31).

10. An automated tensile testing device according to claim 9, characterized in that: An optical coupling baffle (33) is connected to the end surface of the second gear (32); the optical coupling baffle (33) is annular; a slot-type optical coupling (34) is mounted on the motor seat (29); a portion of the optical coupling baffle (33) is located in a slot of the slot-type optical coupling (34).

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