CN113370108A - Clamp for detecting tire uniform motion - Google Patents
Clamp for detecting tire uniform motion Download PDFInfo
- Publication number
- CN113370108A CN113370108A CN202110795408.2A CN202110795408A CN113370108A CN 113370108 A CN113370108 A CN 113370108A CN 202110795408 A CN202110795408 A CN 202110795408A CN 113370108 A CN113370108 A CN 113370108A
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- clamp
- hole
- expansion sleeve
- lock catch
- push rod
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- 238000001514 detection method Methods 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract 1
- 210000003781 tooth socket Anatomy 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/28—Determining imbalance by oscillating or rotating the body to be tested with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a clamp for detecting dynamic balance and uniformity of a tire. The locking device comprises an upper rim clamp and a lower rim clamp, wherein a locking buckle push rod is sleeved in a clamp mandrel, a spring pressing seat is arranged in an inner hole of a lifting handle on the clamp mandrel, the locking buckle push rod extends into the inner hole of the lifting handle to be connected with the spring pressing seat, a locking spring is sleeved outside the locking buckle push rod, and the locking buckle push rod is connected with the clamp mandrel through a conical ratchet structure; an annular cavity and a central through hole are arranged in the locking cylinder body, the wall of the central through hole is an annular tooth socket, and a piston is arranged in the annular cavity; the piston is connected with the expansion sleeve supporting plate through a guide shaft, and a return spring is arranged outside the guide shaft; the locking cylinder body is provided with a lower rim base which is provided with a central axial hole, a centering expansion sleeve is arranged between the central axial hole and the clamp mandrel, and the centering expansion sleeve is in conical surface fit with the central axial hole. The invention avoids the accidents of collision, blocking and the like of the upper clamp and the lower clamp in the process of die assembly, is convenient to adjust, and forms a strong locking structure which can completely resist the pressure of several tons to dozens of tons caused by tire inflation.
Description
Technical Field
The invention relates to a detection clamp, in particular to a clamp for detecting dynamic balance and uniformity of a tire.
Background
In the process of producing tires, tire manufacturers are required to perform action balance detection and uniformity detection on the inflation of each tire before delivery. In the detection process, full-automatic dynamic balance equipment and full-automatic uniformity detection equipment are needed, and a clamp for detecting the uniform motion of the tire is one of core mechanisms of the equipment.
In most current mold clamping structures for upper and lower clamps, four independent lock catches are pushed by 4 cylinders to lock the upper clamp. Because 4 cylinders are independent, the structure can not achieve the purpose of high-precision positioning, and the coaxiality of the upper clamp and the lower clamp is extremely high in requirement of the uniform motion detection of the tire and needs to be within 20 mu. In order to meet such high requirements, a very small shaft hole fit clearance is required to ensure fit accuracy. And too small shaft hole clearance can lead to the upper and lower anchor clamps to bump, card trouble such as dying in the course of the work, probably will cause the devastating destruction to equipment.
Disclosure of Invention
In order to solve the problems in the background art, the invention discloses a clamp for detecting the dynamic balance and uniformity of a tire.
The technical scheme adopted by the invention is as follows:
the clamp comprises an upper rim clamp and a lower rim clamp, and the tire to be tested is clamped between the upper rim clamp and the lower rim clamp.
The upper rim clamp comprises an unlocking stop block, a spring pressing seat, a lifting handle, a clamp mandrel, an upper rim base, an upper rim, a locking push rod and a locking spring; the clamp mandrel is vertically arranged and is axially provided with a central through hole, the lock catch push rod is movably sleeved in the central through hole of the clamp mandrel, and a lifting handle with an inner hole is fixed on the upper end surface of the clamp mandrel around the central through hole; a spring pressing seat is arranged in an inner hole of the lifting handle, and the upper end of the spring pressing seat is fixedly connected (can be connected through threads) with an unlocking stop block; the upper end of the lock catch push rod extends into the inner hole of the lifting handle and is fixedly connected with the lower end of the spring pressing seat (can be connected through threads), a locking spring is sleeved outside the lock catch push rod between the lower end face of the spring pressing seat and the upper end face of the clamp mandrel, and the lock catch push rod and the lower end of the clamp mandrel form axial lock catch connection through a conical ratchet structure; the upper rim base is coaxially and fixedly sleeved at the upper end of the clamp mandrel, and the upper rim is coaxially sleeved outside the upper rim base;
the lower rim clamp comprises a lower clamp air circuit board, a locking cylinder, a piston, an expansion sleeve supporting plate, an expansion sleeve pressing plate, a centering expansion sleeve, a lower rim base, a lower rim, a guide shaft and a return spring; an annular cavity is arranged in the locking cylinder body, a central through hole is further formed in the locking cylinder body in the middle of the annular cavity, a plurality of annular tooth grooves are continuously machined on the wall of the central through hole, and the annular tooth grooves are matched with the lock catches of the upper rim clamp; the lower end of the annular cavity is provided with an opening and is provided with a lower clamp gas circuit board, and an annular piston is arranged in the annular cavity; the upper end face of the piston is fixedly connected (can be connected through threads) with an expansion sleeve supporting plate outside the upper end of the locking cylinder body through a plurality of guide shafts, and a return spring is sleeved outside the guide shaft between the upper end face of the piston and the upper end face of the locking cylinder body in the annular cavity;
a lower rim base is fixedly installed on the upper end face of a locking cylinder body outside an expansion sleeve supporting plate, a lower rim is coaxially sleeved outside the lower rim base, the lower rim base is of a hollow structure and is provided with a central axial hole, a central axial hole of the lower rim base is sleeved outside a fixture mandrel of an upper rim fixture, the inner wall of the central axial hole is processed into a conical surface, a centering expansion sleeve is installed between the central axial hole and the fixture mandrel, the outer peripheral surface of the centering expansion sleeve is a conical surface, and the outer peripheral surface of the centering expansion sleeve and the central axial hole of the lower rim base form conical surface matching; the bottom of the centering expansion sleeve is axially fixed on the expansion sleeve supporting plate by an expansion sleeve pressing plate, so that the centering expansion sleeve is driven to synchronously move by the vertical axial lifting motion of the piston.
The conical surface ratchet structure specifically comprises: the lower end part of the lock catch push rod is a cone, similarly, the lower end of the central through hole of the clamp mandrel is provided with an inner cone hole, and the cone at the lower end part of the lock catch push rod is embedded in the inner cone hole at the lower end of the clamp mandrel to form conical surface matching; at least two radial through grooves are formed in the circumferential side wall where the inner taper hole at the lower end of the clamp mandrel is located at intervals along the circumferential direction, a lock catch is installed in each radial through groove, the inner end of each lock catch is used for being connected with the conical surface buckle at the lower end of the lock catch push rod, and the outer end of each lock catch is used for being connected with the lower rim clamp.
The inner processing of hasp be wedge face bar groove, the outer end processing is the ratchet, set up the bar arch on the conical surface after the centrum of hasp push rod lower extreme stretches out anchor clamps dabber central through-hole, the bar arch inlays the dress joint with the inner wedge face bar groove of hasp in every radial logical groove in the interior conical bore, the ratchet of hasp outer end and the annular tooth's socket of locking cylinder body central through-hole form the ratchet and connect.
The outer flange arranged at the upper end of the fixture mandrel is provided with a flange surface, and the upper rim base is coaxially and fixedly sleeved on the flange surface of the fixture mandrel.
The outer peripheral surface of the rim base is provided with a conical surface matched with the inner ring of the upper rim.
The lower clamp air channel plate is provided with at least 1 air channel communicated into the annular cavity below the piston.
The side wall of the locking cylinder body is provided with a detection ring, the detection ring is connected with the piston, and the position of the piston is judged through the detection ring.
The outer flange is arranged at the bottom of the centering expansion sleeve, the expansion sleeve pressing plate is fixedly arranged on the expansion sleeve supporting plate, an annular groove is formed between the expansion sleeve pressing plate and the expansion sleeve supporting plate, and the outer flange at the bottom of the centering expansion sleeve is embedded in the annular groove.
The outer wall of the lower rim base is designed into an outer side conical surface matched with the inner ring of the lower rim.
The invention has the following beneficial effects:
in the invention, the centering expansion sleeve is used for centering the upper rim clamp, and due to the strong telescopic capacity of the expansion sleeve, the gap between the central hole of the clamp mandrel and the central hole of the lower clamp can be very large, so that the accidents of collision, clamping and the like of the upper clamp and the lower clamp in the die assembly process are avoided.
Meanwhile, the adjustment of the center position of the upper rim becomes less strict due to the increase of the gap, so that the adjustment is convenient.
The upper rim clamp and the lower rim clamp are locked by the lock catches, and the strong locking structure can completely resist the pressure of several tons to dozens of tons caused by tire inflation.
Drawings
Fig. 1 is a general sectional view showing a state where the film is laminated according to the present invention.
Fig. 2 is a sectional view of the lock cylinder B2 of the present invention.
Fig. 3 is a schematic external view of the centering sleeve B7 of the present invention.
Fig. 4 is a structural diagram of the matching relationship between the lock push rod and the lock.
In the figure: a1: unlocking stopper, a 2: spring seat, a 3: handle for lifting, a 4: clamp mandrel, a 5: upper rim seat, a 6: upper rim, a 7: latch push rod, A8: locking spring, a 9: latch, B1: lower clamp gas plate, B2: lock cylinder, B3: piston, B4: detection loop, B5: expanding sleeve supporting plate, B6: expanding sleeve pressing plate, B7: centering sleeve, B8: lower rim base, B9: lower rim, B10: guide shaft, B11: return spring, B2.1: annular gullet, B2.2: an annular cavity.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the clamp includes an upper rim clamp a0 and a lower rim clamp B0, and the tire to be tested is clamped between the upper rim clamp a0 and the lower rim clamp B0.
The upper rim clamp A0 comprises an unlocking stop A1, a spring pressing seat A2, a lifting handle A3, a clamp mandrel A4, an upper rim base A5, an upper rim A6, a locking push rod A7 and a locking spring A8; the clamp core shaft A4 is vertically arranged and is axially provided with a central through hole, the lock catch push rod A7 is movably sleeved in the central through hole of the clamp core shaft A4, the upper end surface of the clamp core shaft A4 is fixedly provided with a lifting handle A3 with an inner hole around the central through hole, and the inner hole of the lifting handle A3 is coaxial with the central through hole of the clamp core shaft A4; a spring pressing seat A2 is arranged in an inner hole of the lifting handle A3, the upper end of the spring pressing seat A2 is fixedly connected with an unlocking stop A1, and the unlocking stop A1 is used for limiting the downward pressing stroke of the lock catch push rod A7; the upper end of a lock catch push rod A7 extends into an inner hole of a lifting handle A3 and the lower end of a spring pressing seat A2 is fixedly connected, a lock spring A8 is sleeved outside a lock catch push rod A7 between the lower end face of the spring pressing seat A2 and the upper end face of a clamp mandrel A4, the upper end and the lower end of a lock spring A8 are respectively connected to the lower end face of the spring pressing seat A2 and the hole end face of the upper end face of a clamp mandrel A4 around a central through hole, and the lower end parts of the lock catch push rod A7 and a clamp mandrel A4 form axial lock catch connection through a conical ratchet structure; the upper rim base A5 is coaxially and fixedly sleeved at the upper end of the clamp mandrel A4, the upper rim A6 is fixedly and coaxially sleeved outside the upper rim base A5, and the upper rim A6 is used for clamping a tire.
The conical surface ratchet structure specifically comprises: the upper rim clamp A0 further comprises a lock catch A9, the lower end part of a lock catch push rod A7 is a cone, the outer peripheral surface of the cone forms a conical surface with a small upper part and a large lower part, similarly, the lower end of a central through hole of the clamp mandrel A4 is provided with an inner conical hole which is a conical hole with a small upper part and a large lower part, and the cone at the lower end part of the lock catch push rod A7 is embedded in the inner conical hole at the lower end of the clamp mandrel A4 to form conical surface matching; at least two horizontal radial through grooves are formed in the circumferential side wall where an inner conical hole at the lower end of the clamp mandrel A4 is located at intervals along the circumferential direction, a lock catch A9 is installed in each radial through groove, the inner end of the lock catch A9 is used for being in buckling connection with a conical surface at the lower end of a lock catch push rod A7, and the outer end of the lock catch A9 is used for being connected with a central through hole of a locking cylinder B2 of the lower rim clamp B0.
As shown in fig. 4, the inner end of the lock catch a9 is processed into a wedge-shaped strip-shaped groove, the outer end is processed into a ratchet, a cone at the lower end of the lock catch push rod a7 extends out of the central through hole of the clamp mandrel a4, a strip-shaped bulge is arranged on the cone, the strip-shaped bulge is embedded and clamped with the wedge-shaped strip-shaped groove at the inner end of the lock catch a9 in each radial through groove in the inner cone hole, and the ratchet at the outer end of the lock catch a9 is connected with the annular tooth groove of the central through hole of the locking cylinder B2 through a ratchet; the lock catch push rod A7 moves up and down in the central through hole of the clamp mandrel A4, and the conical ratchet structure drives the lock catch A9 to move horizontally and radially in the radial through groove.
The locking spring A8 acts on the locking push rod A7 through elasticity, the locking push rod A7 is driven to move upwards in the central through hole of the clamp mandrel A4, and no gap exists between the cone at the lower end of the locking push rod A7 and the inner cone hole at the lower end of the clamp mandrel A4, so that the locking buckle A9 is pushed to extend out of the radial through groove of the clamp mandrel A4 and then forms ratchet connection with the inner surface of the locking cylinder B2;
the locking device overcomes the elastic force effect of a locking spring A8 to press a locking push rod A7 downwards, drives a locking push rod A7 to move downwards in a central through hole of a clamp mandrel A4, so that a gap is formed between a cone at the lower end of the locking push rod A7 and an inner cone hole at the lower end of a clamp mandrel A4, a locking buckle A9 retracts into a radial through groove of the clamp mandrel A4 through a conical surface buckling connection structure, and the locking buckle A9 is not connected with the inner surface of a locking cylinder B2.
The unlocking stopper a1 is kept pressed down to the carrying handle A3 by the external driving force when the unlocking stopper a1 is pressed down to be connected to the upper end face of the carrying handle A3.
The upper end of the clamp mandrel A4 is externally provided with an outer flange to form a flange surface, and the annular upper rim base A5 is coaxially and fixedly sleeved on the flange surface of the clamp mandrel A4.
The outer peripheral surface of the rim base A5 is provided with a conical surface for matching with the inner ring of the upper rim A6, so that the coaxiality of the upper rim A6 after model changing is ensured. Specifically, the outer peripheral surface of the rim base a5 may be provided with multiple steps, wherein the outer peripheral surface of the middle step is provided with a conical surface for matching with the inner ring of the upper rim a 6.
As shown in fig. 1, the lower rim clamp B0 includes a lower clamp air plate B1, a locking cylinder B2, a piston B3, an expansion sleeve supporting plate B5, an expansion sleeve pressing plate B6, a centering expansion sleeve B7, a lower rim base B8, a lower rim B9, a guide shaft B10 and a return spring B11;
as shown in fig. 2, the locking cylinder B2 is a hollow structure, and is provided with an annular cavity B2.2 therein, a central through hole is further formed in the locking cylinder B2 in the middle of the annular cavity B2.2, a plurality of annular tooth grooves B2.1 are continuously machined on the hole wall of the central through hole along the axial direction, and a 9-step annular tooth groove may be provided in specific implementation, and the annular tooth groove B2.1 is matched with the latch a9 of the upper rim fixture a0 to adjust the matching distance between the upper rim fixture a0 and the lower rim fixture B0, so as to meet different types of tires; the lower end of the annular cavity is opened and is provided with a lower clamp gas circuit board B1, the lower clamp gas circuit board B1 closes the annular cavity to form a closed space, an annular piston B3 is arranged in the annular cavity B2.2, and the inner cavity of a locking cylinder body B2 above the piston B3 in the figure 1 is not communicated with the inner cavity of a locking cylinder body B2 below the piston B3;
the lower clamp air channel plate B1 is provided with at least 1 air channel which is communicated into the annular cavity B2.2 below the piston B3 and is used for driving the piston B3 to move along the up-and-down axial direction of the annular cavity. In specific implementation, the lower clamp gas circuit board B1 is connected with 1 channel of gas circuit, wherein one channel of gas circuit is used for driving the piston to move through the closed space enclosed by the lower clamp gas circuit board B1, the lower end face of the piston B3 and the locking cylinder B2.
A detection ring B4 is arranged on the side wall of the locking cylinder B2, a detection ring B4 is connected with the piston B3, and the position of the piston B3 is judged through the detection ring B4; in specific implementation, the outer wall of the locking cylinder B2 above the piston B3 is provided with a through hole groove, the detection ring B4 penetrates through the through hole groove to be connected with the piston B3, and the inner cavity of the locking cylinder B2 above the piston B3 can be communicated with outside air.
The upper end face of a piston B3 is fixedly connected with an expansion sleeve supporting plate B5 outside the upper end of a locking cylinder B2 through a plurality of guide shafts B10, the piston B3 is connected with a guide shaft B10 in a sealing way, the guide shaft B10 movably penetrates through the upper end of the locking cylinder B2, and the expansion sleeve supporting plate B5 can be connected with the piston B3 through 6 guide shafts B10 in specific implementation; a return spring B11 is sleeved outside a guide shaft B10 positioned between the upper end face of the piston B3 and the upper end face of a locking cylinder B2 in the annular cavity, the upper end and the lower end of the return spring B11 are respectively connected with the upper end face of a locking cylinder B2 in the annular cavity and the upper end face of a piston B3, and the piston B3 moves downwards to rebound under the elastic action of the return spring B11;
a lower rim base B8 is fixedly installed on the upper end face of a locking cylinder body B2 outside an expansion sleeve supporting plate B5, a lower rim B9 is coaxially sleeved outside a lower rim base B8, the lower rim B9 is used for clamping a tire, the lower rim base B8 is of a hollow structure and is provided with a central axial hole, a central axial hole of the lower rim base B8 is sleeved outside a clamp mandrel A4 of an upper rim clamp A0, the inner wall of the central axial hole is machined into an inner conical surface to form a conical hole with a small upper part and a large lower part, an annular centering expansion sleeve B7 is installed between the central axial hole and the clamp mandrel A4, as shown in FIG. 3, the outer peripheral surface of a centering expansion sleeve B7 is a conical surface to form a conical surface with a small upper part and a large lower part, the outer peripheral surface of a centering expansion sleeve B7 is a conical surface, and the outer peripheral surface of a centering expansion sleeve B7 is matched with the central axial hole of a lower rim base B8; the inner circumferential surface of the centering expansion sleeve B7 is a cylindrical surface used for being matched with the clamp mandrel A4, the centering expansion sleeve B7 is provided with a plurality of gaps along the circumferential direction, the gaps are axially formed and radially penetrate through the thickness of the side wall of the centering expansion sleeve B7, and the gaps are respectively formed from the upper end and the lower end of the centering expansion sleeve B7 and are arranged in a staggered mode.
The bottom of the centering expansion sleeve B7 is axially fixed on an expansion sleeve supporting plate B5 by an expansion sleeve pressing plate B6, so that the centering expansion sleeve B7 is driven to synchronously move by the up-and-down axial lifting motion of a piston B3.
The lower clamp gas circuit board B1 is used for ventilating and pressurizing or exhausting and decompressing the annular cavity below the piston B3, so that the piston B3 is driven to move up and down along the axial direction of the locking cylinder B2, the centering expansion sleeve B7 is driven to move up and down synchronously, the centering expansion sleeve B7 is contracted or loosened through the matching of the conical surfaces between the outer peripheral surface of the centering expansion sleeve B7 and the central axial hole of the lower rim base B8, and the outer wall of the clamp mandrel A4 is clasped or loosened.
The bottom of the centering expansion sleeve B7 is provided with an outer flange, an expansion sleeve pressing plate B6 is fixedly arranged on an expansion sleeve supporting plate B5, an annular groove is formed between the expansion sleeve pressing plate B6 and the expansion sleeve supporting plate B5, the outer flange at the bottom of the centering expansion sleeve B7 is embedded in the annular groove, and the bottom of the centering expansion sleeve B7 is axially fixed on the expansion sleeve supporting plate B5 by the expansion sleeve pressing plate B6.
The outer wall of the lower rim base B8 is provided with an outer tapered surface for engaging with the inner ring of the lower rim B9, thereby ensuring the coaxiality of the lower rim B9 after the model change. Specifically, the outer peripheral surface of the lower rim base B8 may be provided with a plurality of steps, wherein the outer peripheral surface of the intermediate step is provided with an outer tapered surface for engaging with the inner ring of the lower rim B9.
Thus, the lower rim base B8 has two tapered surfaces, an outer tapered surface and an inner tapered surface, and the inner tapered surface of the lower rim base B8 engages with the centering sleeve B7 to press the centering sleeve B7, so that the centering sleeve B7 contracts. The outer side conical surface of the lower rim base B8 is matched with the lower rim B9, so that the coaxiality of the lower rim B9 is guaranteed when the lower rim B9 is replaced.
The working process of the invention is as follows:
1) in the initial state, the mechanical structure lifts the upper rim clamp A0 and simultaneously presses down the unlocking stop A1, the lock catch push rod A7 moves downwards, so that the lock catch A9 retracts inwards horizontally, the unlocking stop A1 keeps the pressing-down state, and the mechanical structure lifts the upper rim clamp A0 to be separated from the lower rim clamp B0 upwards;
2) placing a tire to be tested on a lower rim clamp B0, driving an upper rim clamp A0 to descend to a specified position by a mechanical structure, and keeping an unlocking block A1 in a downward pressing state, so that an upper clamp mandrel A4 is inserted into a central hole of a lower rim clamp B0;
3) the locking stop A1 is loosened by a mechanical structure, the locking push rod A7 moves upwards under the action of the locking spring A8, and the locking buckle A9 is pushed by the conical ratchet structure to horizontally extend outwards to be matched with the locking ring of the lower rim clamp B0;
4) compressed air enters the closed space below the piston B3 through an air passage of the lower clamp air channel plate B1, and pushes the piston B3 to move upwards, so that the centering expansion sleeve B7 compresses and tightly holds the upper clamp mandrel A4, centering of the upper clamp and the lower clamp is completed, and good die assembly coaxiality is ensured. The coaxiality of the combined films is good, namely the upper rim A6 and the lower rim B9 are in a coaxial state.
5) The position of the detection ring B4 is detected through the sensor, the tire to be tested is inflated after the upper clamp and the lower clamp are determined to be closed, and the testing step is carried out after the tire to be tested is clamped.
6) After the test is completed, the compressed air in the tire is discharged, and simultaneously, the air in the locking cylinder B2 is discharged through the air passage.
7) Under the action of a return spring B11, the piston B3 is pushed to move downwards, and further the centering expansion sleeve B7 is pulled to move downwards, so that centering and holding of the upper rim clamp A0 is released.
8) The unlocking block A1 is pressed downwards by a mechanical structure, so that the lock catch A9 retracts, the locking state of the upper rim and the lower rim is released, the upper rim clamp A0 is pulled by the mechanical structure, the lower rim clamp B0 is separated, and the tire to be tested is taken down from the lower rim clamp B0. The whole action is completed.
Claims (9)
1. The utility model provides a anchor clamps for tire is all moved and is detected which characterized in that:
the clamp comprises an upper rim clamp (A0) and a lower rim clamp (B0), and a tire to be tested is clamped between the upper rim clamp (A0) and the lower rim clamp (B0);
the upper rim clamp (A0) comprises an unlocking stop block (A1), a spring pressing seat (A2), a lifting handle (A3), a clamp mandrel (A4), an upper rim base (A5), an upper rim (A6), a latch push rod (A7) and a locking spring (A8); the clamp core shaft (A4) is vertically arranged and is axially provided with a central through hole, the lock catch push rod (A7) is movably sleeved in the central through hole of the clamp core shaft (A4), and a lifting handle (A3) with an inner hole is fixed on the upper end surface of the clamp core shaft (A4) around the central through hole; a spring pressing seat (A2) is arranged in an inner hole of the lifting handle (A3), and the upper end of the spring pressing seat (A2) is fixedly connected with an unlocking stop block (A1); the upper end of a lock catch push rod (A7) extends into an inner hole of a lifting handle (A3) and is fixedly connected with the lower end of a spring pressing seat (A2), a lock spring (A8) is sleeved outside a lock catch push rod (A7) between the lower end face of the spring pressing seat (A2) and the upper end face of a clamp mandrel (A4), and the lock catch push rod (A7) and the lower end of the clamp mandrel (A4) form axial lock catch connection through a conical ratchet structure; the upper rim base (A5) is coaxially and fixedly sleeved at the upper end of the clamp mandrel (A4), and the upper rim (A6) is coaxially sleeved outside the upper rim base (A5);
the lower rim clamp (B0) comprises a lower clamp air plate (B1), a locking cylinder (B2), a piston (B3), an expansion sleeve supporting plate (B5), an expansion sleeve pressing plate (B6), a centering expansion sleeve (B7), a lower rim base (B8), a lower rim (B9), a guide shaft (B10) and a return spring (B11); an annular cavity (B2.2) is arranged in the locking cylinder body (B2), a central through hole is further formed in the locking cylinder body (B2) in the middle of the annular cavity (B2.2), a plurality of annular tooth grooves (B2.1) are continuously machined on the hole wall of the central through hole, and the annular tooth grooves (B2.1) are matched with a lock catch (A9) of the upper rim clamp (A0); the lower end of the annular cavity is opened and is provided with a lower clamp gas circuit board (B1), and an annular piston (B3) is arranged in the annular cavity (B2.2); the upper end surface of the piston (B3) is fixedly connected with an expansion sleeve supporting plate (B5) outside the upper end of the locking cylinder body (B2) through a plurality of guide shafts (B10), and a return spring (B11) is sleeved outside the guide shaft (B10) between the upper end surface of the piston (B3) and the upper end surface of the locking cylinder body (B2) in the annular cavity;
a lower rim base (B8) is fixedly installed on the upper end face of a locking cylinder body (B2) outside an expansion sleeve supporting plate (B5), a lower rim (B9) is coaxially sleeved outside the lower rim base (B8), the lower rim base (B8) is of a hollow structure and is provided with a central axial hole, the central axial hole of the lower rim base (B8) is sleeved outside a clamp mandrel (A4) of an upper rim clamp (A0), the inner wall of the central axial hole is machined into a conical surface, a centering expansion sleeve (B7) is installed between the central axial hole and the clamp mandrel (A4), the outer peripheral surface of the centering expansion sleeve (B7) is a conical surface, and the outer peripheral surface of the centering expansion sleeve (B7) is matched with the central axial conical surface of the lower rim base (B8); the bottom of the centering expansion sleeve (B7) is axially fixed on an expansion sleeve supporting plate (B5) by an expansion sleeve pressing plate (B6), so that the centering expansion sleeve (B7) is driven to synchronously move by the up-and-down axial lifting motion of a piston (B3).
2. A fixture for tire hunting detection as claimed in claim 1, wherein:
the conical surface ratchet structure specifically comprises: the lower end part of the lock catch push rod (A7) is a cone, similarly, the lower end of the central through hole of the clamp mandrel (A4) is provided with an inner cone hole, and the cone at the lower end part of the lock catch push rod (A7) is embedded in the inner cone hole at the lower end of the clamp mandrel (A4) to form conical surface matching; at least two radial through grooves are formed in the circumferential side wall where an inner taper hole at the lower end of the clamp mandrel (A4) is located at intervals along the circumferential direction, a lock catch (A9) is installed in each radial through groove, the inner end of the lock catch (A9) is used for being connected with a conical surface of the lower end portion of a lock catch push rod (A7) in a buckling mode, and the outer end of the lock catch (A9) is used for being connected with a lower rim clamp (B0).
3. A fixture for tire hunting detection as claimed in claim 2, wherein:
the inner end of the lock catch (A9) is processed into a wedge-shaped strip-shaped groove, the outer end of the lock catch (A9) is processed into a ratchet, a strip-shaped bulge is arranged on the conical surface after the conical body at the lower end of the lock catch push rod (A7) extends out of the central through hole of the clamp mandrel (A4), the strip-shaped bulge is embedded and clamped with the wedge-shaped strip-shaped groove at the inner end of the lock catch (A9) in each radial through groove in the inner conical hole, and the ratchet at the outer end of the lock catch (A9) and the annular tooth groove of the central through hole of the locking cylinder body (B2) form ratchet connection.
4. A fixture for tire hunting detection as claimed in claim 1, wherein:
the clamp is characterized in that an outer flange is arranged outside the upper end of the clamp mandrel (A4) to form a flange surface, and the upper rim base (A5) is coaxially and fixedly sleeved on the flange surface of the clamp mandrel (A4).
5. A fixture for tire hunting detection as claimed in claim 1, wherein:
the outer peripheral surface of the rim base (A5) is provided with a conical surface which is used for being matched with the inner ring of the upper rim (A6).
6. A fixture for tire hunting detection as claimed in claim 1, wherein:
the lower clamp gas circuit board (B1) is provided with at least 1 path of gas circuit which is communicated with the annular cavity (B2.2) below the piston (B3).
7. A fixture for tire hunting detection as claimed in claim 1, wherein:
the side wall of the locking cylinder (B2) is provided with a detection ring (B4), the detection ring (B4) is connected with the piston (B3), and the position of the piston (B3) is judged through the detection ring (B4).
8. A fixture for tire hunting detection as claimed in claim 1, wherein:
the bottom of the centering expansion sleeve (B7) is provided with an outer flange, an expansion sleeve pressure plate (B6) is fixedly arranged on an expansion sleeve supporting plate (B5), an annular groove is formed between the expansion sleeve pressure plate (B6) and the expansion sleeve supporting plate (B5), and the outer flange at the bottom of the centering expansion sleeve (B7) is embedded in the annular groove.
9. A fixture for tire hunting detection as claimed in claim 1, wherein:
the outer wall of the lower rim base (B8) is provided with an outer side conical surface which is used for being matched with the inner ring of the lower rim (B9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795408.2A CN113370108B (en) | 2021-07-14 | 2021-07-14 | Clamp for tire uniformity detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795408.2A CN113370108B (en) | 2021-07-14 | 2021-07-14 | Clamp for tire uniformity detection |
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| CN113370108A true CN113370108A (en) | 2021-09-10 |
| CN113370108B CN113370108B (en) | 2024-02-20 |
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| CN202110795408.2A Active CN113370108B (en) | 2021-07-14 | 2021-07-14 | Clamp for tire uniformity detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959739A (en) * | 2021-09-29 | 2022-01-21 | 杭州集智机电股份有限公司 | A compound die buffer stop for tire is all moved and is detected |
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| CN113959739B (en) * | 2021-09-29 | 2023-09-29 | 杭州集智机电股份有限公司 | Die assembly anti-collision device for tire uniform motion detection |
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|---|---|
| CN113370108B (en) | 2024-02-20 |
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