阅读说明：本技术 一种标志板固定装置 (sign board fixing device ) 是由 于新斌 李照全 于 2019-09-12 设计创作，主要内容包括：本发明涉及刻打机技术领域,具体涉及一种标志板固定装置,包括,伸缩驱动机构；缓冲机构,其一端与所述伸缩驱动机构的伸出端相连接；固定叉头,其开叉的一端朝向标志板,另一端与所述缓冲机构的另一端相连接。本发明在标志板刻打的过程中,可对标志板进行固定,使其不容易发生位置窜动,图形刻打位置准确,整体的美观度高,同时缓冲装置的设置,降低了固定叉头与标志板接触时的冲击力,有效保护标志板。(the invention relates to the technical field of engraving and marking machines, in particular to a mark plate fixing device, which comprises a telescopic driving mechanism, a telescopic driving mechanism and a telescopic driving mechanism, wherein the telescopic driving mechanism is arranged on the mark plate; one end of the buffer mechanism is connected with the extending end of the telescopic driving mechanism; and one end of the fixed fork head, which is forked, faces the sign board, and the other end of the fixed fork head is connected with the other end of the buffer mechanism. The invention can fix the mark plate in the marking process, so that the mark plate is not easy to shift, the pattern marking position is accurate, the integral aesthetic degree is high, and meanwhile, the arrangement of the buffer device reduces the impact force when the fixed fork head is contacted with the mark plate, thereby effectively protecting the mark plate.)

1. a sign board fixing device is characterized by comprising,

a telescopic driving mechanism (1);

One end of the buffer mechanism (2) is connected with the extending end of the telescopic driving mechanism (1);

and the other end of the fixed fork head (3) is connected with the other end of the buffer mechanism (2).

2. a sign board fixing device according to claim 1, wherein the buffer mechanism (2) comprises,

the mounting plate (2-1) is provided with the fixed fork head (3) on one side facing the sign board;

the two guide rods (2-2) are symmetrically and vertically arranged on the other side of the mounting plate (2-1);

the two ends of the sliding plate (2-3) are provided with through holes (2-4) corresponding to the positions of the guide rods (2-2), linear bearings (2-5) are arranged in the through holes (2-4), the guide rods (2-2) penetrate through the linear bearings (2-5), and the sliding plate (2-3) slides on the guide rods (2-2);

and the buffer spring (2-6) is sleeved on the guide rod (2-2) in a penetrating manner and is arranged between the mounting plate (2-1) and the sliding plate (2-3).

3. the sign board fixing device according to claim 2, wherein one end of the buffer spring (2-6) is fixedly connected with the mounting plate (2-1), the other end of the buffer spring (2-6) is provided with a rubber ring (2-7), the sliding plate (2-3) faces one side of the buffer spring (2-6) and is provided with a pressure sensor (2-8) corresponding to the position of the rubber ring (2-7), and the pressure sensor (2-8) is connected with the control processor (4).

4. A sign board fixing device according to claim 3, characterized in that the mounting plate (2-1) and the sliding plate (2-3) are provided with sliding blocks (2-9) on their lower end surfaces, the sliding blocks (2-9) slide on the first sliding rails (2-10), and the extending direction of the first sliding rails (2-10) is the same as the extending direction of the telescopic driving mechanism (1).

5. The sign board fixing device according to claim 4,

Racks (2-11) are arranged on the left side and the right side of the first sliding rail (2-10);

the sliding block (2-9) is of a concave structure, a groove (2-12) is formed in the middle of the sliding block, the left side and the right side of the groove (2-12) are respectively provided with a plurality of rolling gears (2-13), and the rolling gears (2-13) are meshed with the corresponding racks (2-11) on the same side.

6. the sign board fixing device according to claim 5, wherein a cavity is formed in the sliding block (2-9), a locking device is further arranged in the cavity, the locking device comprises a driving rod (2-14), the driving rod (2-14) is parallel to the first sliding rail (2-10) and is positioned on one side of the sliding gear (2-13) far away from the first sliding rail (2-10), one end of the driving rod (2-14) is hinged with the inside of the cavity, a jaw (2-15) is rotatably connected to the middle of the driving rod (2-14), the end of the jaw (2-15) facing the rolling gear (2-13) is provided with a latch, two sides of the other end are symmetrically provided with limiting springs (2-16), the other end of the limiting springs (2-16) is connected with the driving rod (2-14), the other end of the driving rod (2-14) is provided with a connecting block (2-17), the driving rod is connected with the inner wall of one side, far away from the rolling gear (2-13), of the cavity through a return spring (2-18), an electromagnet (2-19) is arranged on the inner wall of the cavity and located on the other side of the driving rod (2-14) and used for adsorbing the connecting block (2-17), and the electromagnet (2-19) is connected with the control processor (4).

7. Sign board fixation according to claim 6, characterized in that the pressure sensors (2-8) are connected to the control processor (4) via a circuit module;

The positive pole of pressure sensor (2-8) is connected the output of power, and the negative pole ground connection, circuit module includes:

The signal output ends of the inductors L and the pressure sensors (2-8) are respectively connected with one end of the inductor L and the non-inverting input end of the two-stage comparator A2,

the other end of the inductor L is respectively connected with one end of a first capacitor C1, a seventh resistor R7 and an eighth resistor R8,

the other end of the first capacitor C1 is grounded, the other end of the seventh resistor R7 is connected with one end of the second capacitor C2, the other end of the eighth resistor R8 is respectively connected with the other end of the capacitor C2, the inverting input end of the first-stage comparator A1, one end of the tenth resistor R10 and one end of the capacitor C3,

One end of the tenth resistor R10 is connected in parallel with the capacitor C3,

The feedback end of the first-stage comparator A1 is connected with a tenth resistor R10 and a third capacitor C3 which are connected in parallel,

The non-inverting input end of the first-stage comparator A1 is connected with one end of a first resistor R1, and the other end of the first resistor R1 is connected with the inverting input end of a second-stage comparator A2; the non-inverting input end of the first-stage comparator A1 is connected with one end of a second resistor R2, and the other end of the second resistor R2 is connected with the output end of the first-stage comparator A1;

the inverting input end of the second-stage comparator A2 is connected with one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected with the output end of the second-stage comparator A2; the output end of the second-stage comparator A2 is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the non-inverting input end of a third-stage comparator A3;

the inverting input end of the three-stage comparator A3 is connected with one end of a fifth resistor R5, and the other end of the fifth resistor R5 is connected with the output end of the first-stage comparator A1; the non-inverting input end of the three-stage comparator A3 is connected with one end of a sixth resistor R6, and the other end of the sixth resistor R6 is connected with the output end of the three-stage comparator A3; the inverting input end of the three-stage comparator A3 is connected with one end of a seventh resistor R7, and the other end of the seventh resistor R7 is grounded; the output of the three-stage comparator a3 is electrically connected to the input of the processor.

8. sign board fixing device according to claim 2, characterized in that the fixing fork (3) comprises,

the lower end face of the bottom plate (3-1) is detachably connected with the mounting plate (2-1);

the two vertical plates (3-2) are symmetrically arranged on the upper end surface of the bottom plate (3-1);

the sliding rod (3-3) is fixedly connected between the two vertical plates (3-2);

the left inserting arm (3-4) and the right inserting arm (3-5) are symmetrically arranged on the upper end face of the bottom plate (3-1), the lower ends of the left inserting arm (3-4) and the right inserting arm (3-5) are respectively provided with a moving block (3-6), the center of each moving block (3-6) is transversely provided with a mounting hole (3-7) in a penetrating manner, the moving blocks penetrate through the sliding bars (3-3) and move on the sliding bars (3-3), a first resistance spring (3-8) is arranged on the sliding bars (3-3) between the moving blocks (3-6) and the vertical plates (3-2) close to the moving blocks, the tops of the left inserting arm (3-4) and the right inserting arm (3-5) are hinged to be provided with contact plates (3-9), and the left side of the hinged part of the left inserting arm (3-4) is provided with a limiting block (3-10), so as to limit the contact plate (3-9) at the top of the left insertion arm (3-4) to deflect leftwards, the right side of the hinged part of the right insertion arm (3-5) is provided with a limit block (3-10) so as to limit the contact plate (3-9) at the top of the right insertion arm (3-5) to deflect rightwards, the surface of the upper end surface of the contact plate (3-9) is provided with a plurality of spherical grooves (3-20), the spherical grooves (3-20) are internally provided with balls (3-11),

the lower end faces of the opposite sides of the two contact plates (3-9) are provided with pressing devices which comprise,

one end of the ejector rod (3-12) is hinged with the left inserting arm (3-4) or the right inserting arm (3-5),

a second slide rail (3-13) arranged at one side of the left inserting arm (3-4) opposite to the right inserting arm (3-5),

a movable block (3-15) sliding on the second slide rail (3-13),

a limit plate (3-16) arranged at one side opposite to the lower ends of the left insertion arm (3-4) and the right insertion arm (3-5),

and the second resistance spring (3-17) is arranged between the movable block (3-15) and the second sliding rail (3-13).

9. the sign board fixing device according to claim 8, wherein the bottom board (3-1) is provided with a plurality of threaded holes (3-18) in a linear arrangement, the vertical board (3-2) is vertically provided with locking holes (3-19), and the vertical board (3-2) is fixedly connected with the bottom board (3-1) through bolts.

Technical Field

the invention relates to the technical field of engraving and marking machines, in particular to a mark plate fixing device.

background

the sign board is used for making the indicator board of sign, and the content such as above-mentioned characters, pattern plays the effect of pointing out the direction and warning, and common sign board has public benefit sign, culture sign, instruction sign, warning sign etc.. Characters, patterns and the like on the mark plate are engraved by an engraving machine, and in the prior art, the mark plate is easy to shift in position in the engraving process, so that errors are generated in the positions of the patterns, and the integral attractiveness is influenced; therefore, it is desirable to provide a sign board fixing device to solve the above technical problems.

disclosure of Invention

In view of the disadvantages of the prior art, the present invention provides a sign board fixing device, comprising,

a telescopic driving mechanism;

One end of the buffer mechanism is connected with the extending end of the telescopic driving mechanism;

And one end of the fixed fork head, which is forked, faces the sign board, and the other end of the fixed fork head is connected with the other end of the buffer mechanism.

preferably, the buffer mechanism includes, in combination,

the mounting plate is provided with the fixed fork head on one side facing the sign board;

the two guide rods are symmetrically and vertically arranged on the other side of the mounting plate;

The two ends of the sliding plate are provided with through holes corresponding to the positions of the guide rods, linear bearings are arranged in the through holes, the guide rods penetrate through the linear bearings, and the sliding plate slides on the guide rods;

And the buffer spring is sleeved on the guide rod and arranged between the mounting plate and the sliding plate.

preferably, one end of the buffer spring is fixedly connected with the mounting plate, the other end of the buffer spring is provided with a rubber ring, the sliding plate faces one side of the buffer spring and is provided with a pressure sensor at a position corresponding to the rubber ring, and the pressure sensor is connected with the control processor.

preferably, the lower end surfaces of the mounting plate and the sliding plate are both provided with sliding blocks, the sliding blocks slide on the first sliding rails, and the extending direction of the first sliding rails is the same as the extending direction of the telescopic driving mechanism.

preferably, the method is characterized in that,

Racks are arranged on the left side and the right side of the first sliding rail;

The sliding block is of a concave structure, a groove is formed in the middle of the sliding block, the left side and the right side of the groove are respectively provided with a plurality of rolling gears, and the rolling gears are meshed with the corresponding racks on the same side.

preferably, a cavity is arranged in the sliding block, a locking device is also arranged in the cavity, the locking device comprises a driving rod, the driving rod is parallel to the first slide rail and is positioned at one side of the sliding gear far away from the first slide rail, one end of the driving rod is hinged with the inside of the cavity, the middle part of the driving rod is rotationally connected with a claw, the end part of the jaw facing the rolling gear is provided with a latch, two sides of the other end are symmetrically provided with limiting springs, the other end of the limiting spring is connected with the driving rod, the other end of the driving rod is provided with a connecting block, and the inner wall of one side of the cavity, which is far away from the rolling gear, is connected with a return spring, the inner wall of the cavity, which is positioned at the other side of the driving rod, is provided with an electromagnet for adsorbing a connecting block, and the electromagnet is connected with the control processor.

Preferably, the pressure sensor is connected with the control processor through a circuit module;

the output of power is connected to pressure sensor's positive pole, negative pole ground connection, circuit module includes:

the signal output end of the inductor L and the signal output end of the pressure sensor are respectively connected with one end of the inductor L and the non-inverting input end of the two-stage comparator A2,

the other end of the inductor L is respectively connected with one end of a first capacitor C1, a seventh resistor R7 and an eighth resistor R8, the other end of the first capacitor C1 is grounded, the other end of the seventh resistor R7 is connected with one end of a second capacitor C2, the other end of the eighth resistor R8 is respectively connected with the other end of the capacitor C2, the inverting input end of the first-stage comparator A1, one end of a tenth resistor R10 and one end of the capacitor C3,

one end of the tenth resistor R10 is connected in parallel with the capacitor C3,

the feedback end of the first-stage comparator A1 is connected with a tenth resistor R10 and a third capacitor C3 which are connected in parallel,

the non-inverting input end of the first-stage comparator A1 is connected with one end of a first resistor R1, and the other end of the first resistor R1 is connected with the inverting input end of a second-stage comparator A2; the non-inverting input end of the first-stage comparator A1 is connected with one end of a second resistor R2, and the other end of the second resistor R2 is connected with the output end of the first-stage comparator A1;

The inverting input end of the second-stage comparator A2 is connected with one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected with the output end of the second-stage comparator A2; the output end of the second-stage comparator A2 is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the non-inverting input end of a third-stage comparator A3;

the inverting input end of the three-stage comparator A3 is connected with one end of a fifth resistor R5, and the other end of the fifth resistor R5 is connected with the output end of the first-stage comparator A1; the non-inverting input end of the three-stage comparator A3 is connected with one end of a sixth resistor R6, and the other end of the sixth resistor R6 is connected with the output end of the three-stage comparator A3; the inverting input end of the three-stage comparator A3 is connected with one end of a seventh resistor R7, and the other end of the seventh resistor R7 is grounded; the output of the three-stage comparator a3 is electrically connected to the input of the processor.

Preferably, the fixed jaw comprises, in combination,

The lower end surface of the bottom plate is detachably connected with the mounting plate;

the two vertical plates are symmetrically arranged on the upper end surface of the bottom plate;

the sliding rod is fixedly connected between the two vertical plates;

the left inserting arm and the right inserting arm are symmetrically arranged on the upper end face of the bottom plate, moving blocks are arranged at the lower ends of the left inserting arm and the right inserting arm, a mounting hole is transversely formed in the center of each moving block in a penetrating mode and penetrates through the sliding rod to be sleeved on the sliding rod to move on the sliding rod, a first resistance spring is arranged on the sliding rod between the moving blocks and the vertical plate close to the moving blocks, a contact plate is hinged to the tops of the left inserting arm and the right inserting arm, a limiting block is arranged on the left side of the hinged portion of the left inserting arm to limit the contact plate at the top of the left inserting arm to deflect leftwards, a limiting block is arranged on the right side of the hinged portion of the right inserting arm to limit the contact plate at the top of the right inserting arm to deflect rightwards, a plurality,

the lower end faces of the opposite sides of the two contact plates are provided with pressing devices which comprise,

One end of the ejector rod is hinged with the left inserting arm or the right inserting arm,

The second slide rail is arranged on one side of the left inserting arm opposite to the right inserting arm,

a movable block sliding on the second slide rail,

a limit plate arranged at one side opposite to the lower ends of the left insertion arm and the right insertion arm,

and the second resistance spring is arranged between the movable block and the second sliding rail.

preferably, the upper end of the bottom plate is provided with a plurality of threaded holes in a linear arrangement mode, the vertical plate is provided with locking holes, and the vertical plate is fixedly connected with the bottom plate through bolts.

additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Objects and other advantages of the invention may be apparent from the description and claims. The structures particularly pointed out in the claims, as well as in the drawings, are realized and attained.

the technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

drawings

the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a sign board fixing device according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1A;

FIG. 3 is a side view of the buffering device of the present invention;

FIG. 4 is a top view of the slider of the present invention;

FIG. 5 is a side view of the slider of the present invention;

FIG. 6 is a schematic structural diagram of a circuit module according to the present invention;

FIG. 7 is a schematic view of the fixing fork of the present invention.

Detailed Description

the preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

as shown in figure 1 of the drawings, in which,

the invention provides a sign board fixing device, comprising,

A telescopic driving mechanism 1;

one end of the buffer mechanism 2 is connected with the extending end of the telescopic driving mechanism 1;

and the other end of the fixed fork head 3 is connected with the other end of the buffer mechanism 2.

The working principle of the technical scheme is as follows:

When laser marking is carried out to the marking plate, utilize flexible actuating mechanism drive fixed jaw contact marking plate, extrude it fixedly, flexible actuating mechanism is the cylinder in this embodiment, and the central jag department of fixed jaw is trapezoidal and is provided with the plane towards marking plate one side for adaptable square or triangular marking plate, in this embodiment, still set up buffer gear between flexible actuating mechanism and the fixed jaw.

The beneficial effects of the above technical scheme are:

compared with the prior art, this embodiment can fix the sign board at the in-process that the sign board was carved and is beaten, makes it be difficult to take place the position drunkenness, and the figure is carved and is beaten the position accuracy, and holistic pleasing to the eye degree is high, and buffer's setting has reduced the impact force when fixed jaw contacts with the sign board simultaneously, effectively protects the sign board.

As shown in fig. 1 and 2, in one embodiment

The buffer gear 2 is comprised of a spring,

The mounting plate 2-1 is provided with the fixed fork head 3 on one side facing the sign board;

The two guide rods 2-2 are symmetrically and vertically arranged on the other side of the mounting plate 2-1;

the two ends of the sliding plate 2-3 are provided with through holes 2-4 corresponding to the positions of the guide rods 2-2, linear bearings 2-5 are arranged in the through holes 2-4, the guide rods 2-2 penetrate through the linear bearings 2-5, and the sliding plate 2-3 slides on the guide rods 2-2;

and the buffer spring 2-6 is sleeved on the guide rod 2-2 and is arranged between the mounting plate 2-1 and the sliding plate 2-3.

One end of the buffer spring 2-6 is fixedly connected with the mounting plate 2-1, the other end of the buffer spring 2-6 is provided with a rubber ring 2-7, the sliding plate 2-3 faces one side of the buffer spring 2-6 and is provided with a pressure sensor 2-8 corresponding to the position of the rubber ring 2-7, and the pressure sensor 2-8 is connected with the control processor 4.

the working principle of the technical scheme is as follows:

when the telescopic driving mechanism is telescopic, the sliding plate is pushed, then the fixed plate is driven to move through the spring, when the fixed plate is in contact with the mark plate, the spring is pressed to deform, the pressure sensor detects the pressure between the spring and the sliding plate in real time and transmits signal data to the control processor, and when the pressure value reaches a set value, the telescopic driving mechanism is controlled to stop working.

The beneficial effects of the above technical scheme are:

But the pressure between this embodiment pressure sensor's the real-time detection spring and the sliding plate avoids pressure too big to cause the extrusion damage to the sign board, and the setting of rubber circle both can play the effect of supplementary buffering, reduces the collision noise, also makes the extrusion position to pressure sensor for the face extrusion, and pressure is little, effectively protects pressure sensor.

as shown in fig. 3-5, in one embodiment,

the lower end faces of the mounting plate 2-1 and the sliding plate 2-3 are respectively provided with a sliding block 2-9, the sliding blocks 2-9 slide on the first sliding rails 2-10, and the extending direction of the first sliding rails 2-10 is the same as the extending direction of the telescopic driving mechanism 1.

Racks 2-11 are arranged on the left side and the right side of the first sliding rail 2-10;

the sliding blocks 2-9 are of concave structures, grooves 2-12 are formed in the middles of the sliding blocks, a plurality of rolling gears 2-13 are respectively arranged on the left side and the right side of each groove 2-12, and the rolling gears 2-13 are meshed with the corresponding racks 2-11 on the same side.

a cavity is arranged in the sliding block 2-9, a locking device is also arranged in the cavity and comprises a driving rod 2-14, the driving rod 2-14 is parallel to the first slide rail 2-10 and is positioned at one side of the slide gear 2-13 far away from the first slide rail 2-10, one end of the driving rod 2-14 is hinged with the inside of the cavity, the middle part of the driving rod 2-14 is rotatably connected with a claw 2-15, the end part of the claw 2-15 facing the rolling gear 2-13 is provided with a latch, two sides of the other end are symmetrically provided with limiting springs 2-16, the other end of the limiting spring 2-16 is connected with the driving rod 2-14, the other end of the driving rod 2-14 is provided with a connecting block 2-17, and the inner wall of one side of the cavity far away from the rolling gears 2-13 is connected with a return spring 2-18, an electromagnet 2-19 is arranged on the inner wall of the cavity and on the other side of the driving rod 2-14 and used for adsorbing a connecting block 2-17, and the electromagnet 2-19 is connected with the control processor 4.

the working principle of the technical scheme is as follows:

the fixed plate and the sliding plate slide on the first sliding rail through the sliding block, the sliding block is in meshing contact with the first sliding rail through the gear, when the pressure sensor detects that the pressure between the spring and the sliding plate reaches a set value, the electromagnet is controlled to work, the connecting block is adsorbed, and then the driving lever and the clamping jaw are driven to move, so that the clamping jaw is in meshing contact with the driving gear, the effect of locking the driving gear is achieved, and then the positions of the fixed plate and the sliding plate are locked.

as shown in fig. 6, in one embodiment,

the pressure sensors 2-8 are connected with the control processor 4 through a circuit module;

The positive pole of pressure sensor 2-8 connects the output of power, and the negative pole ground connection, circuit module includes:

the signal output ends of the inductance L and the pressure sensors 2-8 are respectively connected with one end of the inductance L and the non-inverting input end of the two-stage comparator A2,

the other end of the inductor L is respectively connected with one end of a first capacitor C1, a seventh resistor R7 and an eighth resistor R8, the other end of the first capacitor C1 is grounded, the other end of the seventh resistor R7 is connected with one end of a second capacitor C2, the other end of the eighth resistor R8 is respectively connected with the other end of the capacitor C2, the inverting input end of the first-stage comparator A1, one end of a tenth resistor R10 and one end of the capacitor C3,

one end of the tenth resistor R10 is connected in parallel with the capacitor C3,

The feedback end of the first-stage comparator A1 is connected with a tenth resistor R10 and a third capacitor C3 which are connected in parallel,

The non-inverting input end of the first-stage comparator A1 is connected with one end of a first resistor R1, and the other end of the first resistor R1 is connected with the inverting input end of a second-stage comparator A2; the non-inverting input end of the first-stage comparator A1 is connected with one end of a second resistor R2, and the other end of the second resistor R2 is connected with the output end of the first-stage comparator A1;

The inverting input end of the second-stage comparator A2 is connected with one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected with the output end of the second-stage comparator A2; the output end of the second-stage comparator A2 is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the non-inverting input end of a third-stage comparator A3;

the inverting input end of the three-stage comparator A3 is connected with one end of a fifth resistor R5, and the other end of the fifth resistor R5 is connected with the output end of the first-stage comparator A1; the non-inverting input end of the three-stage comparator A3 is connected with one end of a sixth resistor R6, and the other end of the sixth resistor R6 is connected with the output end of the three-stage comparator A3; the inverting input end of the three-stage comparator A3 is connected with one end of a seventh resistor R7, and the other end of the seventh resistor R7 is grounded; the output of the three-stage comparator a3 is electrically connected to the input of the processor.

as shown in fig. 7, in one embodiment,

The fixed fork head 3 comprises a plurality of fixed fork heads,

the lower end face of the bottom plate 3-1 is detachably connected with the mounting plate 2-1;

The two vertical plates 3-2 are symmetrically arranged on the upper end surface of the bottom plate 3-1;

The sliding rod 3-3 is fixedly connected between the two vertical plates 3-2;

the left inserting arm 3-4 and the right inserting arm 3-5 are symmetrically arranged on the upper end face of the bottom plate 3-1, the lower ends of the left inserting arm 3-4 and the right inserting arm 3-5 are respectively provided with a moving block 3-6, the center of the moving block 3-6 is transversely provided with a mounting hole 3-7 in a penetrating manner and sleeved on the sliding rod 3-3 to move on the sliding rod 3-3, a first resistance spring 3-8 is arranged on the sliding rod 3-3 between the moving block 3-6 and the vertical plate 3-2 close to the moving block, the top parts of the left inserting arm 3-4 and the right inserting arm 3-5 are hinged with a contact plate 3-9, the left side of the hinged part of the left inserting arm 3-4 is provided with a limiting block 3-10 to limit the contact plate 3-9 at the top part of the left inserting arm 3-4 to deflect leftwards, a limiting block 3-10 is arranged on the right side of the hinged part of the right inserting arm 3-5 to limit the contact plate 3-9 at the top of the right inserting arm 3-5 to deflect rightwards, a plurality of spherical grooves 3-20 are arranged on the surface of the upper end face of the contact plate 3-9, balls 3-11 are arranged in the spherical grooves 3-20,

the lower end faces of the opposite sides of the two contact plates 3-9 are provided with pressing devices which comprise,

One end of the ejector rod 3-12 is hinged with the left inserting arm 3-4 or the right inserting arm 3-5,

a second slide rail 3-13 arranged at one side of the left inserting arm 3-4 opposite to the right inserting arm 3-5,

a movable block 3-15 sliding on the second slide rail 3-13,

a limit plate 3-16 which is arranged at one side of the left insertion arm 3-4 opposite to the lower end of the right insertion arm 3-5,

And the second resistance spring 3-17 is arranged between the movable block 3-15 and the second sliding rail 3-13.

The sign board fixing device according to claim 8, wherein the bottom plate 3-1 is provided with a plurality of threaded holes 3-18 in a linear arrangement, the vertical plate 3-2 is provided with locking holes 3-19 vertically, and the vertical plate 3-2 is fastened to the bottom plate 3-1 by bolts.

The working principle and the beneficial effects of the scheme are as follows:

firstly, the distance between the two vertical plates is adjusted according to the size of the mark plate, the mark plate is aligned to the center of the fixed fork head, when the contact plate is contacted with the mark plate, the deflection angle of the contact plate of the embodiment can deform according to the outer contour of the mark plate so as to adapt to mark plates of various shapes, and the applicability is good.

the contents of the present invention, which are not described in detail, can be adopted in the prior art, and therefore, are not described in detail.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.