Toughness detection device for medical grade silicone tube production

Abstract

The invention discloses a toughness detection device for medical grade silicone tube production, and belongs to the technical field of silicone tubes, the toughness detection device comprises a test base box, two sides of the top of the test base box are provided with through grooves, and inner cavities of the through grooves are slidably connected with two groups of movable supports; according to the invention, the adjusting assembly drives the front and rear groups of movable supports to relatively move the semicircular rings, so that a to-be-tested silicone tube is conveniently clamped and fixed at the outer side of the supporting seat, then the lifting assembly drives the screw to be arranged below the silicone tube, and then the screw enters and exits from the inner cavity of the threaded cylinder for adjustment; different testing tools in the grooves in the screw rod are popped out of the grooves and are in contact with the to-be-tested silicone tube, the lifting assembly drives the supporting block to move upwards, the testing function continuously applies pressure to the silicone tube, and the toughness conditions of the silicone tube under different use conditions are detected through different testing tools, so that the use standard of the medical silicone tube is met, and the test efficiency is improved. The comprehensiveness of the toughness detection of the silicone tube is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of silicone tubes, in particular to a toughness detection device for producing medical-grade silicone tubes. Background Art

[0002] Silicone tubing is a carrier for the circulation and coating of liquids, gases, and other materials. Silicone rubber tubing can be categorized as "extruded tubing" or "special-shaped tubing strips." Widely used in modern industry, the defense industry, and everyday items, silicone tubing is made by adding raw silicone rubber to a two-roll mixing mill or a closed kneader. Silica and other additives are gradually added and repeatedly refined until uniform. The tubing is then extruded to form the finished product in accordance with industry product technical standards. Conductive silicone rubber can be used in the electronics industry, but the manufacturing standards for silicone tubing in the medical field are higher.

[0003] In the prior art, the Chinese invention with publication number CN219870712U discloses a toughness detection device for silicone tube production, comprising a workbench main body, a plurality of groups of clamping blocks installed on the top of the workbench main body, two groups of the clamping blocks are connected by two groups of connecting pieces, and a connecting block is installed between the two groups of the clamping blocks, sliding grooves are provided on both sides of the connecting block close to the clamping block, and the end of the clamping block close to the sliding groove is fixedly connected to the sliding block, and a driving screw is installed below the connecting block and inside the workbench main body, and the end of the driving screw away from the connecting block is fixedly connected to a transverse bevel gear, and the outer side of the transverse bevel gear is meshedly connected to a longitudinal bevel gear. Compared with the existing toughness detection device, this utility model can improve the overall practicality of the toughness detection device through design.

[0004] In the above technical solution, the pressure test of the silicone tube fixed at both ends is performed only by driving the pressure detection device through a telescopic cylinder. At the same time, the pressure direction is still downward, and the space below is limited by the workbench body, resulting in a limited pressure distance. At the same time, the device can only perform pressure testing through one pressure tool, and cannot test the toughness of the silicone tube under multiple conditions, resulting in limitations in the toughness test of the silicone tube. Summary of the Invention

[0005] The purpose of the present invention is to provide a toughness testing device for the production of medical-grade silicone tubes, in which the silicone tube is clamped on the outside of a support seat by two sets of semicircular rings, and then multiple sets of testing tools installed on the threaded rod are contacted with the silicone tube in turn, and the support block is driven upward by a lifting assembly to perform toughness tests on the silicone tube under different conditions to meet the needs of medical-grade silicone tubes and solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: A toughness testing device for medical-grade silicone tube production, comprising a test base box, wherein both sides of the top of the test base box are provided with through slots, and two sets of movable brackets are slidably connected to the inner cavity of the through slots. Semicircular rings for clamping the silicone tube are fixed to the opposing sides of the movable brackets via connecting rods. Support seats are fixed to both sides of the top of the test base box, and one end of the support seat extends between the two sets of semicircular rings. The inner cavity of the test base box is provided with an adjustment assembly for driving the movable brackets to move toward each other. A fixed box is fixed to the rear side of the top of the test base box, and sliding slots are provided on the front and back sides of the fixed box. A support block is movably provided in the inner cavity of the fixed box, and a lifting assembly is provided in the inner cavity of the fixed box for adjusting the support block up and down. A threaded barrel is rotatably connected to the center of the support block via a bearing. A support plate is provided on the back side of the fixed box. A screw is threadedly connected to the inner cavity of the threaded barrel. The top of the screw is provided with multiple sets of grooves in sequence from front to back, and a testing tool is installed in the inner cavity of the groove by crankshaft rotation.

[0007] Preferably, the adjustment assembly includes a driving shaft and a driven shaft that rotate on both sides of the inner cavity of the test base box through bearings, sprockets are fixed to the surfaces of the driving shaft and the driven shaft, the outer sides of the sprockets are connected to the chains for transmission, the bottom of the movable bracket extends to the inner cavity of the test base box and is fixed to the outer side of the chain, a worm gear is fixed to the outer side of the driving shaft, a driving motor is fixed to the inner cavity of the test base box, a worm is fixed to the output shaft of the driving motor, one end of the worm gear rotates on one side of the inner cavity of the test base box through a bearing, and the worm gear is engaged with the side facing the worm gear.

[0008] Preferably, the lifting assembly includes a lifting motor fixed to the top of the fixed box, the output shaft of the lifting motor passes through the inner cavity of the fixed box and is fixed with a threaded rod, the two ends of the threaded rod rotate at the top and bottom of the inner cavity of the fixed box through bearings, a threaded sleeve is embedded in the interior of the support block, the threaded rod passes through the threaded sleeve and is threadedly connected to the threaded sleeve.

[0009] Preferably, a rotary motor is installed on the back of the support plate, the output shaft of the rotary motor passes through the support plate and is fixedly connected to one end of the threaded barrel, and the front end of the support plate extends to the inner cavity of the sliding groove.

[0010] Preferably, a cylinder is fixed to the front end of the screw rod, a vertical rod is fixed to the bottom of the cylinder, and the bottom of the vertical rod passes through the inner cavity of the test base box.

[0011] Preferably, both sides of the back of the fixed box are provided with sliding grooves, the inner cavity of the sliding grooves is slidably connected to a slider, and the back of the slider passes through the sliding grooves and is fixed to the outer side of the support plate.

[0012] Preferably, a through hole is opened at the center of the movable bracket, and the inner cavity of the through hole is slidably connected to a limiting rod, and both ends of the limiting rod are fixed to the inner cavity of the through slot.

[0013] Preferably, a traction spring is fixed to the bottom of the inner cavity of the groove, and one end of the traction spring is fixed to one end of the testing tool.

[0014] Preferably, the facing ends of the support seats are cylindrical, and the diameter of the support seats is smaller than the diameter of the semicircular ring.

[0015] Preferably, a positioning rod and a positioning hole are respectively provided on opposite sides of the semicircular ring, and one end of the positioning rod passes through the inner cavity of the positioning hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention drives the front and rear two sets of movable brackets to move the semicircular ring relative to each other through the adjustment component, so that the silicone tube to be tested can be clamped and fixed on the outside of the support seat, and then the lifting component is used to drive the screw to be placed under the silicone tube. The screw is then adjusted in and out of the inner cavity of the threaded barrel, so that different test tools in the grooves on the screw pop out of the grooves and contact the silicone tube to be tested. As the lifting component drives the support block to move upward, the test function continuously applies pressure to the silicone tube, and different test tools are used to detect the toughness of the silicone tube under different usage conditions, so as to meet the use standards of medical silicone tubes and improve the comprehensiveness of silicone tube toughness testing.

[0018] 2. The present invention sets the outer diameter of the support base so that when the semi-circular ring clamps the silicone tube on the support base, there is enough space for the silicone tube to be placed, so as to avoid insufficient space between the support base and the semi-circular ring, which causes the silicone tube to extend outward when the semi-circular ring clamps the silicone tube, causing the semi-circular ring joint to clamp the silicone tube, resulting in damage to the silicone tube, and affecting the test of the overall toughness of the silicone tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the test base box of the present invention;

[0021] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing box of the present invention;

[0023] Figure 5 It is a rear perspective structural diagram of the fixed box of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the screw of the present invention.

[0025] Numbers in the figure: 1. Test base box; 2. Through slot; 3. Movable bracket; 4. Semicircular ring; 5. Support seat; 6. Adjustment assembly; 61. Drive shaft; 62. Driven shaft; 63. Sprocket; 64. Chain; 65. Worm gear; 66. Drive motor; 67. Worm; 7. Fixed box; 8. Sliding slot; 9. Support block; 10. Lifting assembly; 101. Lifting motor; 102. Threaded rod; 103. Threaded sleeve; 11. Threaded barrel; 12. Support plate; 13. Screw; 14. Groove; 15. Test tool; 16. Rotating motor; 17. Cylinder; 18. Vertical rod; 19. Slide slot; 20. Slider; 21. Limit rod; 22. Traction spring; 23. Positioning rod; 24. Positioning hole. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The present invention provides Figures 1 to 6 The toughness testing device for producing medical-grade silicone tubes shown in the figure comprises a test base box 1, through grooves 2 are provided on both sides of the top of the test base box 1, two sets of movable brackets 3 are slidably connected to the inner cavity of the through grooves 2, and semicircular rings 4 for clamping the silicone tube are fixed to the opposite sides of the movable brackets 3 through connecting rods, support seats 5 are fixed on both sides of the top of the test base box 1, one end of the support seat 5 extends between the two sets of semicircular rings 4, and the inner cavity of the test base box 1 is provided with an adjustment component 6 for driving the movable brackets 3 to move toward each other. A fixed box 7 is fixed to the rear side of the body, and sliding grooves 8 are provided on the front and back of the fixed box 7. A support block 9 is movably provided in the inner cavity of the fixed box 7. A lifting assembly 10 for adjusting the support block 9 up and down is provided in the inner cavity of the fixed box 7. A threaded cylinder 11 is rotatably connected to the center of the support block 9 through a bearing. A support plate 12 is provided on the back of the fixed box 7. A screw 13 is threadedly connected to the inner cavity of the threaded cylinder 11. A plurality of groups of grooves 14 are provided on the top of the screw 13 from front to back. A test tool 15 is installed in the inner cavity of the groove 14 through crankshaft rotation.

[0028] The adjustment component 6 drives the front and rear two groups of movable brackets 3 to move the semicircular ring 4 relative to each other, so that the silicone tube to be tested can be clamped and fixed on the outside of the support seat 5, and then the lifting component 10 is used to drive the screw 13 to be placed under the silicone tube, and then the screw 13 is adjusted in and out of the inner cavity of the threaded barrel 11, so that the different test tools 15 in the groove 14 on the screw 13 pop out of the groove 14 and contact the silicone tube to be tested. As the lifting component 10 drives the support block 9 to move upward, the test function continuously applies pressure to the silicone tube, and uses different test tools 15 to detect the toughness of the silicone tube under different usage conditions, so as to meet the use standards of medical silicone tubes and improve the comprehensiveness of silicone tube toughness testing.

[0029] The adjustment assembly 6 includes a driving shaft 61 and a driven shaft 62 that rotate on both sides of the inner cavity of the test base box 1 through bearings. A sprocket 63 is fixed to the surface of the driving shaft 61 and the driven shaft 62. The outer side of the sprocket 63 is connected to the chain 64 for transmission. The bottom of the movable bracket 3 extends to the inner cavity of the test base box 1 and is fixed to the outer side of the chain 64. A worm gear 65 is fixed to the outer side of the driving shaft 61. A driving motor 66 is fixed to the inner cavity of the test base box 1. A worm 67 is fixed to the output shaft of the driving motor 66. One end of the worm 67 rotates on one side of the inner cavity of the test base box 1 through a bearing. The worm 67 is connected to the worm gear 65. The two worm gears 65 are driven by the worm gears 65 to rotate, and the rotating drive shaft 61 drives the chain 64 to rotate through the sprocket 63 in cooperation with the driven shaft 62, and then the two sides of the chain 64 rotate in different directions, thereby driving the movable bracket 3 to move toward each other. The semi-circular ring 4 can be opened and closed by the relative movement of the movable bracket 3, so that the silicone tube can be clamped and fixed on the outside of the support seat 5 by the semi-circular ring 4, and the two ends of the silicone tube to be tested can be clamped and fixed.

[0030] The lifting assembly 10 includes a lifting motor 101 fixed to the top of the fixed box 7. The output shaft of the lifting motor 101 passes through the inner cavity of the fixed box 7 and is fixed with a threaded rod 102. The two ends of the threaded rod 102 rotate at the top and bottom of the inner cavity of the fixed box 7 through bearings. A threaded sleeve 103 is embedded in the interior of the support block 9. The threaded rod 102 passes through the threaded sleeve 103 and is threadedly connected to the threaded sleeve 103. The threaded rod 102 is driven to rotate by the lifting motor 101. The threaded rod 102 drives the support block 9 to move up and down in the inner cavity of the fixed box 7 through the cooperation of the threaded sleeve 103, thereby driving the threaded barrel 11 to move up and down. The height of the screw 13 and the test tool 15 can be adjusted, so that when the test tool 15 conflicts with the silicone tube to be tested, pressure is provided by the upward movement of the screw 13.

[0031] A rotating motor 16 is installed on the back of the support plate 12. The output shaft of the rotating motor 16 passes through the support plate 12 and is fixedly connected to one end of the threaded barrel 11. The front end of the support plate 12 extends to the inner cavity of the sliding groove 8. The threaded barrel 11 is driven to rotate by the rotating motor 16, which facilitates the forward and backward telescopic movement of the screw 13 in the inner cavity of the threaded barrel 11, thereby releasing the test tool 15 from the groove 14 at different positions. Different test tools 15 are used to comprehensively detect the thermal conditions of the silicone tube to be tested to meet the requirements of medical-grade silicone tubes.

[0032] A cylinder 17 is fixed to the front end of the screw 13, and a vertical rod 18 is fixed to the bottom of the cylinder 17. The bottom of the vertical rod 18 passes through the inner cavity of the test base box 1. Through the setting of the cylinder 17, not only can the vertical rod 18 be supported and connected, but the vertical rod 18 can also be used to limit the screw 13 to ensure that the screw 13 remains relatively stationary inside the rotating threaded barrel 11, so as to prevent the screw 13 from rotating with the rotation of the threaded barrel 11, resulting in the screw 13 being unable to telescope and move in the inner cavity of the threaded barrel 11, and then the position of the test tool 15 cannot be adjusted.

[0033] Slide grooves 19 are provided on both sides of the back of the fixed box 7. The inner cavity of the slide groove 19 is slidably connected to a slider 20. The back of the slider 20 passes through the slide groove 19 and is fixed to the outer side of the support plate 12. The slider 20 slides in the inner cavity of the slide groove 19, which makes it convenient to use the slider 20 to drive the support plate 12 to slide on the back of the fixed box 7. At the same time, the stability between the support plate 12 and the fixed box 7 is limited to prevent the support plate 12 from rotating under the drive of the rotating motor 16, resulting in the inability to rotate the threaded cylinder 11.

[0034] A through hole is provided at the center of the movable bracket 3, and the inner cavity of the through hole is slidably connected to the limit rod 21. The two ends of the limit rod 21 are fixed to the inner cavity of the through groove 2. Through the cooperation of the limit rod 21, it is convenient to limit the movable bracket 3 to avoid the shaking of the chain 64 driving the movable bracket 3 to move up and down in the through groove 2, and it is impossible to ensure that the two groups of semicircular rings 4 remain at the same height to close and extrude and fix the silicone tube, ensuring that the semicircular rings 4 move toward each other synchronously, thereby improving the stability of the device.

[0035] A traction spring 22 is fixed to the bottom of the inner cavity of the groove 14, and one end of the traction spring 22 is fixed to one end of the test tool 15. The setting of the traction spring 22 facilitates the limiting of the test tool 15. When the test tool 15 is not restricted by the threaded barrel 11, the test tool 15 is deflected outward under the traction of the traction spring 22 and the cooperation of the crankshaft, thereby releasing the test tool 15. At the same time, when the screw 13 moves toward the inner cavity of the threaded barrel 11, the test tool 15 is retracted into the groove 14 due to the restriction of the threaded barrel 11, without affecting the movement of the screw 13 in the threaded barrel 11.

[0036] The facing end of the support seat 5 is in the shape of a cylinder 17, and the diameter of the support seat 5 is smaller than the diameter of the semicircular ring 4. By setting the outer shape of the support seat 5, it is convenient to fit the support seat 5 and the inner wall of the semicircular ring 4, so as to clamp the silicone tube and ensure the integrity of the silicone tube in the clamped state.

[0037] A positioning rod 23 and a positioning hole 24 are respectively provided on the opposite sides of the semicircular ring 4. One end of the positioning rod 23 passes through the inner cavity of the positioning hole 24. The setting of the positioning hole 24 and the positioning rod 23 facilitates the positioning of the semicircular ring 4 and ensures that the relative semicircular rings 4 are aligned to prevent the semicircular ring 4 from deflecting, resulting in misaligned clamping of the silicone tube and rupture of the silicone tube.

[0038] During specific use, the two ends of the silicone tube that needs toughness test are sleeved on the outside of the support seat 5, and then the driving motor 66 is started. The output shaft of the driving motor 66 drives the worm 67 to rotate, and then the worm 67 drives the driving shaft 61 to rotate through the worm gear 65. The driving shaft 61 drives the chain 64 to rotate under the cooperation of the driven shaft 62 through the sprocket 63. Then the movable bracket 3 fixed on the outside of the chain 64 slides in the inner cavity of the through groove 2. The movable bracket 3 drives the semicircular ring 4 to clamp the silicone tube to be tested on the support seat 5. Then the lifting motor 101 drives the threaded rod 102 to rotate, and the threaded rod 102 is rotated through the threaded rod 102. The cooperation of the sleeve 103 causes the support block 9 to move in the inner cavity of the fixed box 7, moves the screw 13 and the cylinder 17 downward, and places them on the lower end of the silicone tube to be tested, and then the rotating motor 16 drives the threaded barrel 11 to rotate, so that the screw 13 moves outward in the inner cavity of the threaded barrel 11. When the test tool 15 moves out of the threaded barrel 11, the traction rope of the traction spring 22 rotates around the crankshaft and deflects out of the groove 14, and then different test tools 15 are used to support the silicone tube to be tested. Subsequently, the lifting motor 101 drives the support block 9 to move upward, and the test tool 15 is used to detect the toughness of the silicone tube under different conditions.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A toughness testing device for producing medical-grade silicone tubes, comprising a test base box (1), characterized in that: Both sides of the top of the test base box (1) are provided with through grooves (2), the inner cavity of the through grooves (2) are slidably connected with two groups of movable brackets (3), and the opposite sides of the movable brackets (3) are fixed with semicircular rings (4) for clamping the silicone tube through connecting rods. Both sides of the top of the test base box (1) are fixed with support seats (5), one end of the support seat (5) extends between the two groups of semicircular rings (4), and the inner cavity of the test base box (1) is provided with an adjustment component (6) for driving the movable brackets (3) to move toward each other. A fixed box (7) is fixed to the rear side of the top of the test base box (1), and the fixed box ( 7) are provided with sliding grooves (8) on the front and back sides, the inner cavity of the fixed box (7) is movably provided with a support block (9), the inner cavity of the fixed box (7) is provided with a lifting assembly (10) for adjusting the support block (9) up and down, the center of the support block (9) is connected to a threaded cylinder (11) through a bearing, the back side of the fixed box (7) is provided with a support plate (12), the inner cavity of the threaded cylinder (11) is threadedly connected to a screw (13), the top of the screw (13) is provided with multiple groups of grooves (14) in sequence from front to back, and the inner cavity of the groove (14) is installed with a test tool (15) through crankshaft rotation.

2. A toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: The adjustment assembly (6) comprises a driving shaft (61) and a driven shaft (62) which rotate on both sides of the inner cavity of the test base box (1) through bearings, sprockets (63) are fixed to the surfaces of the driving shaft (61) and the driven shaft (62), and the outer sides of the sprockets (63) are connected to the chains (64) for transmission, the bottom of the movable bracket (3) extends to the inner cavity of the test base box (1) and is fixed to the outer side of the chain (64), a worm wheel (65) is fixed to the outer side of the driving shaft (61), a driving motor (66) is fixed to the inner cavity of the test base box (1), and a worm (67) is fixed to the output shaft of the driving motor (66), one end of the worm wheel (67) rotates on one side of the inner cavity of the test base box (1) through a bearing, and the worm wheel (67) is meshed with the opposite side of the worm wheel (65).

3. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: The lifting assembly (10) includes a lifting motor (101) fixed to the top of the fixed box (7), the output shaft of the lifting motor (101) passes through the inner cavity of the fixed box (7) and is fixed with a threaded rod (102), the two ends of the threaded rod (102) rotate at the top and bottom of the inner cavity of the fixed box (7) through bearings, the interior of the support block (9) is embedded with a threaded sleeve (103), the threaded rod (102) passes through the threaded sleeve (103) and is threadedly connected to the threaded sleeve (103).

4. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: A rotary motor (16) is installed on the back of the support plate (12), the output shaft of the rotary motor (16) passes through the support plate (12) and is fixedly connected to one end of the threaded cylinder (11), and the front end of the support plate (12) extends to the inner cavity of the sliding groove (8).

5. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: A cylinder (17) is fixed to the front end of the screw rod (13), a vertical rod (18) is fixed to the bottom of the cylinder (17), and the bottom of the vertical rod (18) penetrates into the inner cavity of the test base box (1).

6. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: Both sides of the back of the fixed box (7) are provided with a slide groove (19), the inner cavity of the slide groove (19) is slidably connected to a slider (20), and the back of the slider (20) passes through the slide groove (19) and is fixed to the outer side of the support plate (12).

7. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: A through hole is provided at the center of the movable bracket (3), and the inner cavity of the through hole is slidably connected to a limiting rod (21), and both ends of the limiting rod (21) are fixed to the inner cavity of the through slot (2).

8. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: A traction spring (22) is fixed to the bottom of the inner cavity of the groove (14), and one end of the traction spring (22) is fixed to one end of the testing tool (15).

9. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: The facing end of the support seat (5) is arranged in a cylindrical (17) shape, and the diameter of the support seat (5) is smaller than the diameter of the semicircular ring (4).

10. The toughness detection device for medical-grade silicone tube production according to claim 1, characterized in that: A positioning rod (23) and a positioning hole (24) are respectively provided on opposite sides of the semicircular ring (4), and one end of the positioning rod (23) passes through the inner cavity of the positioning hole (24).

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