CN220260816U - Pressing fixing mechanism - Google Patents

Abstract

The utility model discloses a pressing fixing mechanism. This push down fixed establishment includes: the device comprises a frame, a lower pressing plate, a restorer and a locker, wherein the lower pressing plate is hinged with the frame, the locker is rotatable relative to the frame in an unlocking state, so that an operator can conveniently adjust the position of the lower pressing plate to press against a workpiece, or the lower pressing plate is automatically separated from the workpiece under the action of the restorer, the locker is fixed relative to the frame in the locking state, so that the lower pressing plate can keep pressing against the workpiece, the fixing of the lower pressing plate to the workpiece is realized, and the lower pressing fixing mechanism can assist the operator in fixing the workpiece, so that the operation difficulty of workpiece assembly is reduced, and the labor intensity of the operator is lightened.

Description

Pressing fixing mechanism

Technical Field

The utility model relates to the technical field of fixing mechanisms, in particular to a pressing fixing mechanism.

Background

When an operator performs assembly operations such as tightening bolts and plugging wire harnesses on a workpiece, the operator usually needs to fix the workpiece by one hand and perform the assembly operations by the other hand, so that the workpiece is prevented from being displaced in the assembly process to influence the assembly quality, the operation difficulty of workpiece assembly is high, and the labor intensity of the operator is high.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides the pressing fixing mechanism which can reduce the operation difficulty of workpiece assembly and lighten the labor intensity of operators.

According to an embodiment of the present utility model, a pressing fixing mechanism includes: a frame; the lower pressing plate is hinged with the frame and is suitable for pressing a workpiece; the restorer is respectively connected with the frame and the lower pressing plate and is used for applying a force for rotating the lower pressing plate in a direction away from the workpiece; the locking device is respectively connected with the frame and the lower pressing plate, and is provided with an unlocking state and a locking state, the lower pressing plate can rotate relative to the frame in the unlocking state, and the lower pressing plate is fixed relative to the frame in the locking state.

According to the pressing fixing mechanism provided by the embodiment of the utility model, the lower pressing plate is hinged with the frame, the locker is in an unlocking state, the lower pressing plate can rotate relative to the frame so as to facilitate an operator to adjust the position of the lower pressing plate to press against a workpiece, or the lower pressing plate is automatically separated from the workpiece under the action of the restorer, the locker is fixed relative to the frame in a locking state, so that the lower pressing plate keeps pressing against the workpiece, the fixing of the lower pressing plate to the workpiece is realized, and the pressing fixing mechanism can assist the operator to fix the workpiece, so that the operation difficulty of workpiece assembly is reduced, and the labor intensity of the operator is lightened.

According to some embodiments of the utility model, the repositor comprises a support bar, one end of the support bar is hinged to the lower platen, and the other end of the support bar is hinged to the frame.

According to some embodiments of the utility model, the latch comprises: the cylinder assembly, the one end of cylinder assembly with the holding down plate is articulated, the other end of cylinder assembly with the frame is articulated, under the locking state, the length of cylinder assembly is fixed under the unblock state, the length of cylinder assembly is scalable.

Further, the cylinder assembly includes: the cylinder barrel, piston and piston rod, inject in the cylinder barrel and hold the chamber, the piston is movably located hold the intracavity and will hold the chamber and separate into and hold sub-chamber down, hold sub-chamber down and be located the piston deviates from one side of piston rod, the one end of piston rod with the holding down plate articulates, the other end of piston rod with piston connection, the cylinder barrel keep away from the one end of piston rod with the frame articulates, it optionally communicates with air supply or atmosphere to hold sub-chamber on, hold sub-chamber and atmosphere intercommunication down.

Further, the cylinder barrel is provided with a control valve, a first end of the control valve is communicated with the atmosphere, a second end of the control valve is communicated with the upper accommodating subchamber, and the opening degree of the control valve is adjustable.

According to some embodiments of the utility model, the hold-down mechanism further comprises a position sensor assembly in communication with the latch, the position sensor assembly being configured to control the latch to switch to the latched state when it detects that the hold-down plate is rotated to a preset position suitable for pressing against the workpiece.

According to some embodiments of the utility model, the pressing fixing mechanism further comprises an operating rod, the operating rod is arranged at one end of the lower pressing plate far away from the frame, and two holding handles are arranged on the operating rod at intervals.

Further, each holding handle is provided with a holding switch, and each holding switch is in communication connection with the locking device.

According to some embodiments of the utility model, the lower platen includes a body portion hinged to the frame and a press-fit portion detachably connected to an end of the body portion remote from the frame, the press-fit portion being adapted to press against the workpiece.

According to some embodiments of the utility model, the frame comprises a base, a first upright and a second upright, both of which are detachably connected to the base, the lower platen is hinged to the first upright, and the lock is hinged to the second upright and the lower platen, respectively.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a pressing down fixing mechanism according to an embodiment of the present utility model;

FIG. 2 is a second schematic view of a pressing down fixing mechanism according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a support bar according to an embodiment of the present utility model.

Reference numerals:

the device comprises a frame 1, a base 11, a first upright 12, a second upright 13, a lower pressure plate 2, a body part 21, a press-fitting part 22, a restorer 3, a supporting rod 31, a fixing part 311, a rod part 312, a piston part 313, a mounting cavity 314, a high-pressure cavity 3141, a low-pressure cavity 3142, a first mounting bracket 32, a second mounting bracket 33, a locker 4, a cylinder assembly 41, a cylinder 411, a control valve 4111, a piston rod 412, a cylinder fixing block 42, a second rotating shaft 43, a hinge block 44, a first hinge sub-block 441, a second hinge sub-block 442, a third rotating shaft 443, a position sensor assembly 5, a third mounting bracket 51, a position sensor 52, a sensing plate 53, an operating rod 61, a holding handle 62, a holding switch 63, a first rotating shaft 71 and a pressing fixing mechanism 10.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The pressing fixing mechanism 10 according to the embodiment of the present utility model is described in detail below with reference to fig. 1 to 3.

Referring to fig. 1 and 2, the pressing fixing mechanism 10 includes: frame 1, holding down plate 2, restorer 3 and locker 4, wherein: the lower pressing plate 2 is hinged with the frame 1, the lower pressing plate 2 can rotate around the axis of the first rotating shaft 71 hinged with the frame 1, the lower pressing plate 2 can rotate and descend along the clockwise direction a, the lower pressing plate 2 can also rotate and ascend along the anticlockwise direction b, the lower pressing plate 2 is suitable for pressing against a workpiece, the workpiece can be placed on an assembly table, one end, far away from the frame 1, of the lower pressing plate 2 can be pressed against the upper surface of the workpiece, and therefore the workpiece is fixed, assembly operation of the workpiece is facilitated, and the operation difficulty of workpiece assembly is reduced.

The restorer 3 is connected with the frame 1 and the holding down plate 2 respectively, and restorer 3 is used for exerting to holding down plate 2 to the pivoted power of keeping away from the work piece direction, after the assembly of work piece is accomplished, restorer 3 can make holding down plate 2 and work piece autosegregation to make the function of pushing down fixed establishment 10 realization semi-automatization. The locker 4 is connected with the frame 1 and the holding down plate 2 respectively, and the locker 4 has unblock state and locking state, and under the unblock state, holding down plate 2 is rotatable for frame 1, and under the locking state, holding down plate 2 is fixed for frame 1 to make holding down plate 2 can keep pressing against the work piece, realize fixing the work piece, so that operating personnel carries out the assembly operation to the work piece.

It will be appreciated that when the workpiece needs to be fixed, the operator first switches the lock 4 to the unlocked state, then manually presses the pressing plate 2, so that the pressing plate 2 rotates clockwise a against the force of the reset device 3 to press against the workpiece, and finally switches the lock 4 to the locked state, so that the pressing plate 2 keeps pressing against the workpiece, at this time, the workpiece is fixed by the pressing plate 2, and the operator can perform operations such as assembly on the workpiece.

When the workpiece is required to be released from fixation, an operator can switch the locker 4 into an unlocking state, and the lower pressing plate 2 can rotate in a counterclockwise direction b away from the workpiece under the action of the restorer 3, so that the lower pressing plate 2 and the workpiece are automatically separated after the workpiece is assembled, and the labor intensity of the operator is reduced.

According to the pressing fixing mechanism 10 of the embodiment of the utility model, the lower pressing plate 2 is hinged with the frame 1, the locker 4 is in an unlocking state, the lower pressing plate 2 can rotate relative to the frame 1, so that an operator can conveniently adjust the position of the lower pressing plate 2 to press against a workpiece, or the lower pressing plate 2 is automatically separated from the workpiece under the action of the restorer 3, the locker 4 is in a locking state, the lower pressing plate 2 is fixed relative to the frame 1, so that the lower pressing plate 2 keeps pressing against the workpiece, the fixing of the lower pressing plate 2 to the workpiece is realized, and the pressing fixing mechanism 10 can assist the operator to fix the workpiece, so that the operation difficulty of workpiece assembly is reduced, and the labor intensity of the operator is lightened.

In some embodiments of the present utility model, the restorer 3 includes a support rod 31, one end of the support rod 31 is hinged to the lower platen 2, the other end of the support rod 31 is hinged to the frame 1, the support rod 31 can be obliquely arranged relative to the lower platen 2, the length of the support rod 31 can be telescopic, and when the support rod 31 is shortened, the support rod 31 can apply a force to the lower platen 2 which rotates in a direction away from the workpiece, so as to control the rotation speed of the lower platen 2, and reduce the labor intensity of operators.

Referring to fig. 2 and 3, the support rod 31 may be a gas spring, the support rod 31 includes a fixing portion 311, a rod portion 312 and a piston portion 313, the fixing portion 311 is hinged to the frame 1, a mounting cavity 314 is defined in the fixing portion 311, the piston portion 313 is movably disposed in the mounting cavity 314, one end of the rod portion 312 is connected to the piston portion 313, the other end of the rod portion 312 extends out of the mounting cavity 314 and is hinged to the lower pressure plate 2, the piston portion 313 divides the mounting cavity 314 into a high pressure cavity 3141 and a low pressure cavity 3142, the high pressure cavity 3141 is located at one side of the piston portion 313 away from the rod portion 312, the pressure of the high pressure cavity 3141 is greater than the pressure of the low pressure cavity 3142, and the high pressure cavity 3141 may be filled with a compressed gas, such as compressed nitrogen.

When the workpiece is required to be fixed, an operator manually presses down the pressing plate 2, the operator needs to overcome the acting force of the supporting rod 31 on the pressing plate 2, so that the pressing plate 2 rotates and descends along the clockwise direction a, the length of the supporting rod 31 is shortened, the volume of the high-pressure cavity 3141 is reduced, and the supporting rod 31 can provide certain damping in the rotation process of the pressing plate 2, so that the rotation speed of the pressing plate 2 is reduced, and the workpiece is prevented from being damaged due to the fact that the rotation speed of the pressing plate 2 is too fast.

When the workpiece is required to be released, the compressed gas in the high-pressure cavity 3141 can push the piston portion 313 to extend the supporting rod 31, and the lower pressing plate 2 can rotate in a counterclockwise direction b away from the workpiece under the action of the supporting rod 31, so that the lower pressing plate 2 is automatically separated from the workpiece, and the labor intensity of operators is reduced.

The support rod 31 may be configured as a hydraulic support rod, an electric support rod, or the like.

Referring to fig. 1 and 2, the repositor 3 further includes a first mounting bracket 32 and a second mounting bracket 33, the first mounting bracket 32 is fixedly connected with the lower platen 2, the second mounting bracket 33 is fixedly connected with the frame 1, one end of the supporting rod 31 is hinged with the first mounting bracket 32, and the other end of the supporting rod 31 is hinged with the second mounting bracket 33, so as to realize indirect hinge connection between two ends of the supporting rod 31 and the lower platen 2 and the frame 1 respectively.

In other embodiments of the present utility model (not shown in the drawings), the reset device 3 includes a torsion spring, the torsion spring is disposed through the first rotating shaft 71 connecting the lower platen 2 and the frame 1, one torsion arm of the torsion spring is abutted against the lower platen 2, the other torsion arm of the torsion spring is abutted against the frame 1, and the torsion spring can apply a force to rotate away from the workpiece to the lower platen 2, so as to reduce the labor intensity of operators.

In some embodiments of the present utility model, referring to fig. 1 and 2, the locker 4 includes: the cylinder assembly 41, one end of the cylinder assembly 41 is articulated with the lower platen 2, the other end of the cylinder assembly 41 is articulated with the frame 1, in the locked state, the length of the cylinder assembly 41 is fixed, so that the lower platen 2 can be kept at a position pressed against a workpiece, in the unlocked state, the length of the cylinder assembly 41 is telescopic, and the position of the lower platen 2 is conveniently adjusted.

It will be appreciated that the cylinder assembly 41 may be fixed in length by inflation, pressure maintaining, or the like, and when the length of the cylinder assembly 41 is fixed, the cylinder assembly 41 may limit the lower platen 2, so that the lower platen 2 is fixed relative to the frame 1, and the lower platen 2 cannot rotate, so that when the lower platen 2 presses against a workpiece, the latch 4 may be adjusted to a latch state, so that the lower platen 2 may be maintained at a position pressed against the workpiece, so that an operator may perform an assembly operation on the workpiece.

The cylinder assembly 41 can achieve telescopic length in a deflation mode, and when the cylinder assembly 41 is telescopic in length, the cylinder assembly 41 can release the limit of the lower pressing plate 2, so that the lower pressing plate 2 can rotate relative to the frame 1, and the position of the lower pressing plate 2 can be conveniently adjusted.

In some embodiments of the present utility model, referring to fig. 1 and 2, the cylinder assembly 41 includes: the cylinder 411, the piston and the piston rod 412, the cylinder 411 is internally limited with a containing cavity, the piston is movably arranged in the containing cavity and divides the containing cavity into an upper containing sub-cavity and a lower containing sub-cavity, the lower containing sub-cavity is positioned on one side of the piston, which is away from the piston rod 412, one end of the piston rod 412 is hinged with the lower pressing plate 2, the other end of the piston rod 412 is connected with the piston, one end of the cylinder 411, which is away from the piston rod 412, is hinged with the frame 1, the upper containing sub-cavity is selectively communicated with an air source or the atmosphere, and the lower containing sub-cavity is communicated with the atmosphere, so that the locker 4 can be switched between a locking state and an unlocking state.

It should be noted that, the air inlet of the upper accommodating sub-cavity may be provided with a first electromagnetic valve, the first electromagnetic valve is used for controlling the on-off of the upper accommodating sub-cavity and the air source, the air outlet of the upper accommodating sub-cavity may be provided with a second electromagnetic valve, and the second electromagnetic valve is used for controlling the on-off of the upper accommodating sub-cavity and the atmosphere.

When the locking device 4 is in the unlocking state, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the upper accommodating subchamber is communicated with the atmosphere, the lower accommodating subchamber is communicated with the atmosphere, the pressures on two sides of the piston are the same, the length of the cylinder assembly 41 is telescopic, and the lower pressing plate 2 can rotate relative to the frame 1.

When the locker 4 is in a locking state, the first electromagnetic valve is opened, the second electromagnetic valve is closed, the upper accommodating subchamber is communicated with the air source, the air pressure provided by the air source is larger than the atmospheric pressure, the air pressure in the upper accommodating subchamber is larger than the air pressure in the lower accommodating subchamber, the piston drives the piston rod 412 to generate downward pulling force on the lower pressing plate 2 under the action of the air pressure in the upper accommodating subchamber, and the force applied by the resetter 3 to the lower pressing plate 2 and rotating in the direction away from the workpiece is insufficient to resist the pulling force, so that the lower pressing plate 2 is kept at a position pressed against the workpiece.

Referring to fig. 1 and 2, the latch 4 further includes: the cylinder fixing block 42, the second rotating shaft 43 and the hinging block 44, one end of the cylinder 411 away from the piston is fixedly connected with the cylinder fixing block 42, the cylinder fixing block 42 is hinged with the frame 1 through the second rotating shaft 43, the cylinder 411 can rotate around the axis of the second rotating shaft 43, the piston rod 412 is hinged with the lower pressing plate 2 through the hinging block 44, the hinging block 44 comprises a first hinging sub-block 441 and a second hinging sub-block 442 which are hinged through a third rotating shaft 443, the first hinging sub-block 441 is fixedly connected with the lower pressing plate 2 through threads, and the second hinging sub-block 442 is connected with threads on the piston rod 412, so that the lower pressing plate 2 can rotate around the axis of the first rotating shaft 71 when the cylinder assembly 41 stretches.

In some embodiments of the present utility model, referring to fig. 1, the cylinder 411 is provided with a control valve 4111, a first end of the control valve 4111 is communicated with the atmosphere, a second end of the control valve 4111 is communicated with the upper accommodating sub-chamber, and an opening degree of the control valve 4111 is adjustable, when the lock 4 is switched from the locking state to the unlocking state, high-pressure gas in the upper accommodating sub-chamber can be discharged into the atmosphere through the control valve 4111, and an operator can control a gas release speed of the upper accommodating sub-chamber by adjusting the opening degree of the control valve 4111, so as to control a rising speed of the lower pressure plate 2.

It will be appreciated that when the lock 4 is switched from the locked state to the unlocked state, the smaller the opening of the control valve 4111, the slower the exhaust speed of the upper accommodating sub-chamber, the longer the upper accommodating sub-chamber reaches the atmospheric pressure, the longer the piston is subjected to downward force due to the upper-lower pressure difference, and the piston can slow down the rising speed of the lower pressure plate 2 in the counterclockwise direction b through the piston rod 412, so as to protect the safety of the operator.

Alternatively, the control valve 4111 may be a throttle valve, and the operator may adjust the opening degree of the throttle valve by himself to control the speed at which the lower platen 2 is raised.

In some embodiments of the present utility model, referring to fig. 1, the press-down fixing mechanism 10 further includes a position sensor assembly 5, where the position sensor assembly 5 is communicatively connected to the latch 4, and the position sensor assembly 5 is configured to control the latch 4 to switch to the latched state when it detects that the press-down plate 2 rotates to a preset position suitable for pressing against a workpiece, so as to promote the degree of automation of the press-down fixing mechanism 10, and facilitate the use of the press-down fixing mechanism 10 by an operator.

Referring to fig. 1, the position sensor assembly 5 includes: the third installing support 51, the position sensor 52, the sensing plate 53, the position sensor 52 is fixed in frame 1 through the third installing support 51, the sensing plate 53 is fixed in holding down plate 2, when sensing plate 53 reaches the preset distance with the end sensing face of position sensor 52, position sensor 52 detects holding down plate 2 and rotates to the preset position that is suitable for pressing the work piece, and sends first default signal to locker 4 to control locker 4 to switch to the locking state.

In some embodiments of the present utility model, the position sensor 52 is communicatively coupled to a first solenoid valve and a second solenoid valve, respectively, and when the position sensor 52 detects that the lower platen 2 is rotated to a preset position suitable for pressing against a workpiece, the position sensor 52 sends a first preset signal to the first solenoid valve and the second solenoid valve, the first solenoid valve is configured to open upon receipt of the first preset signal to allow communication of the upper receiving subchamber with the air source, and the second solenoid valve is configured to close upon receipt of the first preset signal to allow the upper receiving subchamber to be disconnected from the atmosphere, thereby switching the latch 4 to the latched state.

In addition, the pressing fixing mechanism 10 may further be provided with a release button, which may be disposed on the frame 1, the lower pressing plate 2, or the latch 4, and the release button is communicatively connected to the first solenoid valve and the second solenoid valve, and is used for controlling the latch 4 to switch to an unlocked state. When the operator triggers the release button, the release button sends a second preset signal to the first solenoid valve and the second solenoid valve, the first solenoid valve is configured to close after receiving the second preset signal so as to disconnect the upper accommodating subchamber from the air source, and the second solenoid valve is configured to open after receiving the second preset signal so as to communicate the upper accommodating subchamber with the atmosphere, thereby switching the lock 4 to the unlocked state.

In some embodiments of the present utility model, referring to fig. 1 and 2, the pressing fixing mechanism 10 further includes an operation lever 61, an operator can control the position of the pressing plate 2 through the operation lever 61, the operation lever 61 is disposed at one end of the pressing plate 2 far away from the frame 1, so as to increase the length of a force arm, reduce the force requirement on the operator, the operation lever 61 can be connected with the pressing plate 2 through a fastener such as a bolt, and two holding handles 62 are disposed on the operation lever 61 at intervals, each holding handle 62 can be connected with the operation lever 61 through a fastener such as a bolt, when the pressing plate 2 is rotated and lowered in the clockwise direction a through the operation lever 61, the operator needs to hold the two hands on the corresponding holding handles 62, so as to ensure balance and labor saving of the operation lever 61, and reduce the possibility that the operator places one hand between the workpiece and the pressing plate 2 to be pressed, thereby being beneficial to improving the safety of the pressing fixing mechanism 10.

Preferably, the two grip handles 62 are symmetrically disposed with respect to the lower platen 2 to promote stability when an operator controls the position of the lower platen 2 through the two grip handles 62.

In some embodiments of the present utility model, referring to fig. 1 and 2, each of the holding handles 62 is provided with a holding switch 63, each of the holding switches 63 is communicatively connected to the locking device 4, the holding switches 63 may be used to detect whether the holding handle 62 is held by the hand of the operator, and when any one of the holding switches 63 does not detect the hand of the operator, the locking device 4 needs to be kept in an unlocked state to ensure the safety of the operator.

Specifically, each of the holding switches 63 is communicatively connected to the first solenoid valve, when the holding switch 63 detects that the holding switch 63 is held by the hand of the operator, the holding switch 63 sends a third preset signal to the first solenoid valve, and the first solenoid valve is configured to determine whether the third preset signals of the two holding switches 63 are received before opening, if yes, the first solenoid valve is opened, and if not, the first solenoid valve is kept in a closed state, thereby, the operator can switch to a locking state in which the first solenoid valve is opened when the two hands are ensured to be held on the corresponding holding handles 62, so as to avoid the operator from placing one hand between the workpiece and the pressing plate 2 and being squeezed, and thereby being beneficial to improving the safety of the pressing fixing mechanism 10.

Referring to fig. 1 and 2, the grip switch 63 is a button provided at the upper end of the grip handle 62, and an operator can grasp the grip handle 62 with four fingers and press the button at the upper end of the grip handle 62 with the thumb, so that the grip switch 63 detects the hand grasp of the operator.

In some embodiments of the present utility model, referring to fig. 1 and 2, the lower platen 2 includes a body portion 21 and a press-fitting portion 22, the body portion 21 is hinged to the frame 1, the press-fitting portion 22 is detachably connected to an end of the body portion 21 remote from the frame 1, the press-fitting portion 22 is adapted to press against a workpiece, the press-fitting portion 22 may be connected to the body portion 21 by a fastening member or a fastener, etc., and when the press-fitting portion 2 is worn, the maintenance cost of the lower platen 2 may be reduced by replacing the press-fitting portion 22.

In some embodiments of the present utility model, the hardness of the press-fit portion 22 is less than the hardness of the body portion 21, the body portion 21 may be a steel material, the press-fit portion 22 may be an engineering plastic material, and the press-fit portion 22 may have a softer texture to protect the surface of the pressed workpiece from scratches.

In some embodiments of the present utility model, referring to fig. 1 and 2, the frame 1 includes a base 11, a first upright 12 and a second upright 13, the first upright 12 and the second upright 13 are detachably connected to the base 11, the lower platen 2 is hinged to the first upright 12, the latch 4 is respectively hinged to the second upright 13 and the lower platen 2, the base 11 is placed on the ground and ensures stability of the frame 1, the first upright 12 and the second upright 13 can be arranged in parallel and spaced, the first upright 12 and the second upright 13 can be detachably connected to the base 11 through fasteners such as bolts, and the first upright 12 with different heights can be adjusted and replaced according to different heights and positions of the workpiece pressed by the lower platen 2 so as to improve versatility of the pressing fixing mechanism 10.

In some embodiments of the present utility model, a method of using a push-down securing mechanism includes the steps of:

step S1, an operator holds the corresponding holding handles by two hands and pulls the corresponding holding handles downwards so as to enable the lower pressing plate to press against the workpiece.

When the lower pressing plate presses the workpiece, the position sensor detects that the lower pressing plate rotates to a preset position for pressing the workpiece, at the moment, if the two holding switches are in a pressed state, the system receives signals of the position sensor and the two holding switches, then controls the first electromagnetic valve on the air cylinder assembly to be opened, the second electromagnetic valve to be closed, the upper accommodating subchamber is communicated with the air source, the piston drives the piston rod to generate downward pulling force on the lower pressing plate under the action of air pressure in the upper accommodating subchamber, and the locking device is switched to a locking state so that the lower pressing plate is kept at the position for pressing the workpiece.

And S2, after the locker is switched to a locking state, an operator can loosen the two holding handles to assemble the workpiece.

The workpiece is pressed and fixed by the lower pressing plate, so that the assembly quality of the workpiece is ensured.

And S3, an operator presses a release button, the locker is switched to an unlocking state, and the reset device enables the lower pressing plate to rotate in a direction away from the workpiece.

And S4, after the restorer stretches to the limit position, the lower pressing plate stops moving, and an operator takes away the assembled workpiece.

During batch assembly, an operator can put in a new workpiece and repeat the steps S1-S4.

Therefore, the pressing fixing mechanism provided by the embodiment of the utility model has the advantages of simple structure, fewer components, fewer movement steps, low cost and high safety, can be widely applied to manufacturing industries such as split charging lines of automobile steering pipes, and has stronger product competitiveness.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A push-down securing mechanism, comprising:

a frame (1);

the lower pressing plate (2) is hinged with the frame (1), and the lower pressing plate (2) is suitable for pressing a workpiece;

the restorer (3) is respectively connected with the frame (1) and the lower pressing plate (2), and the restorer (3) is used for applying a force for rotating the lower pressing plate (2) in a direction away from the workpiece;

the locking device comprises a locking device (4), wherein the locking device (4) is respectively connected with the frame (1) and the lower pressing plate (2), the locking device (4) is provided with an unlocking state and a locking state, the lower pressing plate (2) can rotate relative to the frame (1) in the unlocking state, and the lower pressing plate (2) is fixed relative to the frame (1) in the locking state.

2. The pressing fixing mechanism according to claim 1, wherein the repositioner (3) comprises a support rod (31), one end of the support rod (31) is hinged to the lower pressing plate (2), and the other end of the support rod (31) is hinged to the frame (1).

3. The pressing down fixing mechanism according to claim 1, wherein the locker (4) includes: the cylinder assembly (41), one end of cylinder assembly (41) with holding down plate (2) are articulated, the other end of cylinder assembly (41) with frame (1) are articulated, in the locking state, the length of cylinder assembly (41) is fixed, in the unblock state, the length of cylinder assembly (41) is scalable.

4. A press-down securing mechanism according to claim 3, characterized in that the cylinder assembly (41) comprises: cylinder (411), piston and piston rod (412), inject in cylinder (411) and hold the chamber, the piston is movably located hold the intracavity and with hold the chamber and separate into and hold sub-chamber down, hold sub-chamber down and be located the piston deviates from one side of piston rod (412), one end of piston rod (412) with holding down plate (2) articulates, the other end of piston rod (412) with piston connection, cylinder (411) keep away from one end of piston rod (412) with frame (1) articulates, it optionally communicates with air supply or atmosphere to hold sub-chamber down and atmosphere intercommunication.

5. The pressing down fixing mechanism according to claim 4, wherein the cylinder (411) is provided with a control valve (4111), a first end of the control valve (4111) is communicated with the atmosphere, a second end of the control valve (4111) is communicated with the upper housing subchamber, and an opening degree of the control valve (4111) is adjustable.

6. The press-down securing mechanism according to any one of claims 1-5, further comprising a position sensor assembly (5), the position sensor assembly (5) being in communicative connection with the latch (4), the position sensor assembly (5) being configured to control the latch (4) to switch to the latched state upon detecting that the press-down plate (2) is rotated to a preset position suitable for pressing against the workpiece.

7. The pressing fixing mechanism according to claim 6, further comprising an operation rod (61), wherein the operation rod (61) is arranged at one end of the lower pressing plate (2) far away from the frame (1), and two holding handles (62) are arranged on the operation rod (61) at intervals.

8. The pressing down fixing mechanism according to claim 7, wherein each of the holding handles (62) is provided with a holding switch (63), and each holding switch (63) is communicatively connected to the latch (4).

9. The pressing fixing mechanism according to claim 1, wherein the pressing plate (2) includes a body portion (21) and a press-fitting portion (22), the body portion (21) being hinged to the frame (1), the press-fitting portion (22) being detachably connected to an end of the body portion (21) remote from the frame (1), the press-fitting portion (22) being adapted to press against the workpiece.

10. The pressing fixing mechanism according to claim 1, wherein the frame (1) comprises a base (11), a first upright (12) and a second upright (13), the first upright (12) and the second upright (13) are both detachably connected with the base (11), the lower pressing plate (2) is hinged with the first upright (12), and the locking device (4) is hinged with the second upright (13) and the lower pressing plate (2) respectively.