Tensile strength testing device for flame-retardant PC / ABS

Abstract

The utility model relates to the technical field of tensile strength testing devices, in particular to a tensile strength testing device for flame-retardant PC / ABS (Polycarbonate / Acrylonitrile Butadiene Styrene), which is characterized in that the left side of a vertical plate is fixedly connected with two multi-stage hydraulic cylinders, and the output ends of the multi-stage hydraulic cylinders are fixedly connected with a right side box body. According to the tensile strength testing device for the flame-retardant PC / ABS, a second bevel gear rotates to drive a rotating plate to rotate, the rotating plate rotates to drive two connecting rods to move, the connecting rods move to drive a moving plate to synchronously slide inwards along the outer wall of a vertical rod, then limiting plates on the two sides can be driven to synchronously move inwards, a wire shell can be well fixed within a short time, and the working efficiency is improved. The worm wheel rotates to drive the limiting plate to rotate, and after the limiting plate rotates, the rotary knob stops rotating, so that the contact area between the limiting plate and the arc-shaped electric appliance shell can be increased through the multiple convex points in the groove, the friction force is increased, the arc-shaped electric appliance shell is not prone to being separated from the limiting plate, and the situation that the test is interrupted is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tensile strength testing device technical field, concretely is a kind of tensile strength testing device for flame-retardant PC / ABS. BACKGROUND

[0002] Flame-retardant PC&ABS has good tensile, bending and air impact, and has good processing performance, and will not corrode die during processing, with higher heat distortion temperature, can be used for the shell of the production mobile phone, socket, electrical parts.

[0003] For example, the announcement number is "CN218766365U" a kind of metal product tensile strength testing device, product can be fixed in different ways, it is stretched to two sides respectively, to stretch product, rely on motor to drive to detect, without using manual operation, while both sides can be uniformly stressed, also avoid the problem that product is damaged due to unbalanced manual operation, and fixed plate for placing metal product is installed, ensure that metal product does not displace to cause uneven stress before installation.But the metal product tensile strength testing device, when limiting workpiece, operator needs to rotate multiple turns fastening nut to adjust the position of sliding clamp plate, it needs long time to be fixed, thereby reduce work efficiency, simultaneously, when workpiece is arc, the contact area of sliding clamp plate and fixed clamp plate with workpiece is small, easily lead to workpiece to separate from fixed clamp plate and sliding clamp plate, make test interrupt. UTILITY MODEL CONTENT

[0004] The utility model aims at solving in the limiting workpiece, operator needs to rotate multiple turns fastening nut to adjust the position of sliding clamp plate, it needs long time to be fixed, thereby reduce work efficiency, simultaneously, when workpiece is arc, the contact area of sliding clamp plate and fixed clamp plate with workpiece is small, easily lead to workpiece to separate from fixed clamp plate and sliding clamp plate, make test interrupt Problem, and propose a kind of tensile strength testing device for flame-retardant PC / ABS.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] Design a kind of tensile strength testing device for flame-retardant PC / ABS, a kind of tensile strength testing device for flame-retardant PC / ABS, including base and box, left side box bottom is fixedly connected with base, the bottom of right side box is fixedly connected with two sliding seats, the sliding seat outer wall is slidably connected with base, the box is fixedly connected with limit mechanism in, the base upper right side is fixedly connected with vertical plate, the vertical plate left side is fixedly connected with two multistage hydraulic cylinders, the multistage hydraulic cylinder output end is fixedly connected with right side box.

[0007] Preferably, the base and the baffle are connected by a plurality of bolts, and the rear side of the box body is fixedly connected with an access door.

[0008] Preferably, the limiting mechanism comprises two servo motors, the output shaft ends of the two servo motors are fixedly connected with first bevel gears, the outer walls of the first bevel gears are in mesh with second bevel gears, the transmission shaft ends of the second bevel gears are fixedly connected with rotating plates, the two sides of the rotating plates are movably connected with connecting rods through pin shafts, the two sides of the connecting rods are movably connected with moving plates through pin shafts, the inner walls of the moving plates are slidably connected with two vertical rods, and the two ends of the vertical rods are fixedly connected with the box body.

[0009] Preferably, the ends of the servo motors are fixedly connected with the box body.

[0010] Preferably, the moving plates are internally provided with adjusting mechanisms, the adjusting mechanisms comprise knobs, the ends of the knobs are fixedly connected with worms, the two ends of the worms are rotatably connected with the moving plates through bearings, the worms are in mesh with worms gears, the two sides of the worm gear transmission shafts are rotatably connected with the moving plates through bearings, the inner sides of the worm gear transmission shafts are fixedly connected with limiting plates, and recesses are formed in the upper sides of the limiting plates.

[0011] The stretch strength testing device for the flame-retardant PC / ABS has the beneficial effects that: through the cooperation of the box body and the limiting mechanism, the forward rotation of the servo motor output shaft drives the rotation of the first bevel gear, thereby driving the rotation of the second bevel gear, the rotation of the second bevel gear drives the rotation of the rotating plate, the rotation of the rotating plate drives the movement of the two connecting rods, the movement of the connecting rods drives the synchronous sliding of the moving plates along the outer walls of the vertical rods, and then the synchronous inward movement of the two limiting plates can be realized, when the inner sides of the limiting plates abut against the electric appliance shell, the servo motor is turned off, so that the two limiting plates can be simultaneously moved inward, the electric wire shell can be fixed in a short time, and the working efficiency is improved.

[0012] Through the cooperation of the moving plates and the adjusting mechanisms, the rotation of the knob drives the rotation of the worm, thereby driving the rotation of the worm gear, the rotation of the worm gear drives the rotation of the limiting plate, when the limiting plate rotates to a certain degree, the rotation knob is stopped, so that the multiple convex points in the recesses can increase the contact area between the limiting plate and the arc-shaped electric appliance shell, the friction force is increased, the arc-shaped electric appliance shell is not easy to be separated from the limiting plate, and the interruption of the test is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a front view of the utility model; Figure 1

[0015] Figure 3 It is​Figure 2 right sectional view of the right side;

[0016] Figure 4 is Figure 3 partial right sectional view;

[0017] Figure 5 is Figure 2 front sectional view of the intermediate adjustment mechanism;

[0018] Figure 6 is Figure 1 partial enlarged schematic view of A in the middle;

[0019] In the figure: 1, base, 2, baffle, 3, sliding seat, 4, limiting mechanism, 401, servo motor, 402, first bevel gear, 403, second bevel gear, 404, rotating plate, 405, connecting rod, 406, moving plate, 407, vertical rod, 5, box, 6, adjustment mechanism, 601, knob, 602, worm, 603, worm gear, 604, limiting plate, 605, groove, 7, multi-stage hydraulic cylinder, 8, vertical plate. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings:

[0021] Referring to the drawings Figures 1-6 : In this embodiment, a tensile strength testing device for flame-retardant PC / ABS includes a base 1 and a box 5. The left side of the box 5 is fixedly connected to the base 1. The right side of the box 5 is fixedly connected to two sliding seats 3. The outer walls of the sliding seats 3 are slidingly connected to the base 1. The inside of the box 5 is fixedly connected to a limiting mechanism 4. The upper right side of the base 1 is fixedly connected to a vertical plate 8. The left side of the vertical plate 8 is fixedly connected to two multi-stage hydraulic cylinders 7. The output ends of the multi-stage hydraulic cylinders 7 are fixedly connected to the right side of the box 5. The base 1 and the baffle 2 are connected through a plurality of bolts. The rear side of the box 5 is fixedly connected to an access door. The end portions of the servo motors 401 are fixedly connected to the box 5.

[0022] The limiting mechanism 4 comprises two servo motors 401, the first bevel gears 402 are fixedly connected to the output shaft ends of the two servo motors 401, the second bevel gears 403 are in mesh with the outer walls of the first bevel gears 402, the rotating plates 404 are fixedly connected to the transmission shaft ends of the second bevel gears 403, the connecting rods 405 are movably connected to the two sides of the rotating plates 404 through pin shafts, the moving plates 406 are movably connected to the two sides of the connecting rods 405 through pin shafts, the two vertical rods 407 are slidably connected to the inner walls of the moving plates 406, the two ends of the vertical rods 407 are fixedly connected to the box body 5, the output shafts of the servo motors 401 are rotated to drive the first bevel gears 402 to rotate, thereby driving the second bevel gears 403 to rotate, the rotating plates 404 are rotated to drive the two connecting rods 405 to move, and the connecting rods 405 are moved to drive the moving plates 406 to slide along the outer walls of the vertical rods 407.

[0023] The adjusting mechanism 6 is arranged in the moving plate 406, the adjusting mechanism 6 comprises a knob 601, the worm 602 is fixedly connected to the end of the knob 601, the two ends of the worm 602 are rotatably connected to the moving plate 406 through bearings, the worm 602 is in mesh with the worm gear 603, the two sides of the transmission shaft of the worm gear 603 are rotatably connected to the moving plate 406 through bearings, the limiting plates 604 are fixedly connected to the inner side of the transmission shaft of the worm gear 603, the recesses 605 are formed above the limiting plates 604, the knob 601 is rotated to drive the worm 602 to rotate, thereby driving the worm gear 603 to rotate, and the limiting plates 604 are rotated to drive the worm gear 603 to rotate.

[0024] Working principle:

[0025] When the tensile strength testing device for the flame-retardant PC / ABS is used:

[0026] The operator installs the base 1 to the corresponding platform through the threaded holes in the four corners of the base 1 and the fastening bolts;

[0027] Then the operator adjusts the positions of the plurality of limiting plates 604 according to the shape of the electrical appliance shell (the electrical appliance shell is made of flame-retardant PC / ABS), when the two sides of the electrical appliance shell are arc-shaped, the operator rotates the upper knob 601 in the forward direction, the knob 601 is rotated to drive the worm 602 to rotate, thereby driving the worm gear 603 to rotate, and the limiting plates 604 are rotated, when the limiting plates 604 are rotated by 180 degrees, at this time, the two sides 605 are in the inward state, the rotation of the knob 601 is stopped, the worm gear 603 and the worm 602 have a self-locking function, the position of the limiting plate 604 can be fixed, the plurality of convex points in the recess 605 can increase the contact area between the limiting plate 604 and the arc-shaped electrical appliance shell, increase the friction, the arc-shaped electrical appliance shell is not easy to be separated from the limiting plate 604, and the interruption of the test is reduced;

[0028] When the two sides of the electric appliance shell are square, the operator rotates the two side knobs 601 downward, and rotates the lower limit plate 604 by 180 degrees;

[0029] Then the operator simultaneously starts the two multi-stage hydraulic cylinders 7, connects the two multi-stage hydraulic cylinders 7 to a hydraulic pump, and can simultaneously start the two multi-stage hydraulic cylinders 7. The output end of the multi-stage hydraulic cylinder 7 extends to drive the right side box 5 to move, thereby driving the plurality of sliding seats 3 to move along the transverse sliding groove processed on the base 1. When the right side box 5 and the left side box 5 can clamp the two ends of the electric appliance shell, record the scale corresponding to the right side box 5 (as the first recorded scale). Finally, the specific stretching data is measured by subtracting the recorded scale from the scale at the time of rupture (as the second recorded scale). The operator closes the two multi-stage hydraulic cylinders 7, and then the operator installs the baffle 2 to the corresponding scale at which the stretching strength (i.e. the stretching distance) needs to be detected through the bolt. The position of the baffle 2 can be adjusted according to the first recorded scale (i.e. when the left side of the baffle 2 is aligned with the corresponding scale on the base 1).

[0030] Then the two servo motors 401 are simultaneously started, the two servo motors 401 are connected to a PLC controller, and through programming and other operations, the two servo motors 401 are simultaneously started. The output shaft of the servo motor 401 rotates to drive the first bevel gear 402 to rotate, thereby driving the second bevel gear 403 to rotate. The rotation of the second bevel gear 403 drives the rotation of the rotating plate 404, and the rotation of the rotating plate 404 drives the movement of the two connecting rods 405. The movement of the connecting rod 405 drives the synchronous sliding of the moving plate 406 along the outer wall of the vertical rod 407 inward, and in turn can drive the synchronous movement of the two side limit plates 604 inward. When the inner sides of the limit plates 604 abut against the electric appliance shell, the servo motor 401 is closed. The servo motor 401 has a self-locking function, so that the two side limit plates 604 can move inward at the same time. It only takes a short time to fix the electric wire shell, thereby improving the work efficiency.

[0031] When the electric appliance shell is clamped, the operator again simultaneously starts the two multi-stage hydraulic cylinders 7, the output end of the multi-stage hydraulic cylinder 7 is retracted, driving the right side box 5 to move to the right, and at the same time, the electric appliance shell can be stretched. When the right side box 5 contacts the baffle 2, the operator observes the electric appliance shell. When the electric appliance shell is moved to the same position, if the electric appliance shell has not been broken at this deformation, it proves that the electric appliance shell is qualified. When the electric appliance shell is broken at this deformation, it proves that the electric appliance shell is unqualified. After the detection is completed, the operator closes the two multi-stage hydraulic cylinders 7, and then the operator again starts the two servo motors 401. The output shaft of the servo motor 401 is reversed to drive the two side limit plates 604 away from the detected electric appliance shell, and then the detected electric appliance shell can be removed.

[0032] Although the utility model has carried on the illustration and the description through the reference preferred embodiment, but, the professional ordinary skilled person should understand, can make various changes in form and detail in the scope of claims.

Claims

1. A tensile strength testing device for flame-retardant PC / ABS, comprising a base (1) and a housing (5), wherein the bottom of the left side housing (5) is fixedly connected to the base (1), characterized in that: Two sliding seats (3) are fixedly connected to the bottom of the box (5) on the right side. The outer walls of the sliding seats (3) are slidably connected to the base (1). Limiting mechanisms (4) are fixedly connected inside the box (5). A vertical plate (8) is fixedly connected to the upper right side of the base (1). Two multi-stage hydraulic cylinders (7) are fixedly connected to the left side of the vertical plate (8). The output ends of the multi-stage hydraulic cylinders (7) are fixedly connected to the box (5) on the right side.

2. The tensile strength testing device for flame-retardant PC / ABS according to claim 1, characterized in that: The base (1) and the baffle (2) are connected by multiple bolts, and the rear side of the box (5) is fixedly connected with an inspection door.

3. The tensile strength testing device for flame-retardant PC / ABS according to claim 1, characterized in that: The limiting mechanism (4) includes a servo motor (401). The output shaft ends of the two servo motors (401) are fixedly connected to a first bevel gear (402). The outer walls of the first bevel gear (402) mesh with a second bevel gear (403). The transmission shaft ends of the second bevel gear (403) are fixedly connected to a rotating plate (404). The two sides of the rotating plate (404) are movably connected to a connecting rod (405) via a pin. The two sides of the connecting rod (405) are movably connected to a moving plate (406) via a pin. The inner walls of the moving plate (406) are slidably connected to two vertical rods (407). The two ends of the vertical rods (407) are fixedly connected to the housing (5).

4. The tensile strength testing device for flame-retardant PC / ABS according to claim 3, characterized in that: The ends of the servo motors (401) are all fixedly connected to the housing (5).

5. The tensile strength testing device for flame-retardant PC / ABS according to claim 3, characterized in that: Each movable plate (406) is equipped with an adjustment mechanism (6). The adjustment mechanism (6) includes a knob (601). A worm gear (602) is fixedly connected to the end of the knob (601). Both ends of the worm gear (602) are rotatably connected to the movable plate (406) through bearings. The worm gear (602) meshes with a worm wheel (603). Both sides of the drive shaft of the worm wheel (603) are rotatably connected to the movable plate (406) through bearings. A limit plate (604) is fixedly connected to the inner side of the drive shaft of the worm wheel (603). A groove (605) is machined on the upper part of the limit plate (604).

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