CN212352244U - Anti-bending early warning protection device for production of automobile sealing strip - Google Patents

Abstract

The utility model discloses an automobile sealing strip production anti-overbending early warning protection device, which comprises a protection device body, a tractor and a guiding and flattening device, wherein the protection device body is positioned between the tractor and the guiding and flattening device, and consists of a signal transmitting device, a signal receiving device and a bottom plate; a first infrared emission end is arranged at the upper part of one side of the upper moving plate, which is far away from the lifting plate, a second infrared emission end is arranged at the lower part of one side of the upper moving plate, which is far away from the lifting plate, and a third infrared emission end is arranged at the upper part of one side of the lower moving plate, which is far away from the lifting plate; and the signal receiving device is provided with a first infrared receiving end, a second infrared receiving end, a third infrared receiving end and a fourth infrared receiving end. The utility model discloses the problem that line exists is produced to warning staff that can be timely, guarantees the product quality of sealing strip dissection, and can carry out emergency braking under emergency, prevents to cause bigger loss.

Description

Anti-bending early warning protection device for production of automobile sealing strip

Technical Field

The utility model relates to a mechanical engineering field, concretely relates to automobile sealing strip production is prevented bending early warning protection device.

Background

With the continuous development of automobile industry in China, the quantity demand and the quality demand of various automobile parts are continuously improved. Various automobile weather strips have been widely used in the automotive field for waterproofing, insulating, etc. doors and windows of automobiles. After the automobile sealing strip is manufactured and molded on a factory production line, the automobile sealing strip is a long whole strip, and generally needs to be cut into sections according to the specific requirements of different vehicles and different use positions on the length of the sealing strip in the subsequent process step, then packaged and boxed, and transported to a superior manufacturer or a host factory for installation and use.

The cutting of the current automobile sealing strip generally comprises a stamping cutting and a cutting, wherein the two methods are that a long-strip-shaped sealing strip produced on a production line is continuously dragged and transported by a tractor, the long-strip-shaped sealing strip enters stamping cutting equipment or cutting equipment, the long-strip-shaped sealing strip is cut into a plurality of sections of sealing strips with specified lengths, and finally, workers hold the sealing strips which are cut into sections away, pack and case the sealing strips. Or after the long-strip-shaped sealing strip is pulled and transported, the long-strip-shaped sealing strip firstly enters a guide flattening device, the flatness of the sealing strip is adjusted, and then the sealing strip enters stamping and cutting equipment or cutting and cutting equipment to be cut into multiple sections of sealing strips with specified lengths.

Through a large number of example surveys, the current production process of the automobile sealing strip cutting is as follows:

the tractor, direction flattening device, the dissection equipment is three relatively independent equipment generally, purchases respectively or customizes by the mill and returns to assemble the dissection production line, do not generally possess intercommunication and mutual control's function between the three. In the actual production process, the three parts need to be adjusted to the same production speed in advance to ensure the orderly production of the section. However, since a large production line of a factory works for 24 hours, after the production line works for a long time, the working performance of equipment cannot be guaranteed to be consistent with the optimal state all the time, the transportation speed of the tractor and the transportation speed of the guide flattening device are easy to have a speed difference, and when the transportation speed of the tractor is high and the transportation speed of the guide flattening device is low, the sealing strip between the tractor and the guide flattening device which is originally relatively flat can bulge upwards or downwards. And be the steel band in the middle of the car stringcourse sealing strip, the bendability is very limited, if the degree of swelling is too big, then can cause steel band plastic deformation, even through the correction of leading flattening device again, the material performance also can't restore to original state completely, and the product after the dissection is also just unqualified naturally, has brought a lot of problems to later stage quality guarantee, and probably can influence the external supply of goods quality of mill, causes certain economic loss and enterprise image to damage. And when the sealing strip is in work at night, whether the sealing strip is bulged or not can not be guaranteed to be monitored by workers all the time, so that the situation is difficult to avoid in actual production.

Therefore, it is necessary to invent an anti-overbending early warning protection device for automobile sealing strip production to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automobile sealing strip production is prevented bending early warning protection device, through being equipped with four group's infrared emission end and infrared receiving terminal, play two-stage early warning guard action, and through hydraulic pressure elevating gear, motor and screw rod, can adjust the sealing strip bending early warning value, the warning staff that can be timely produces the problem that the line exists, guarantee the product quality of sealing strip dissection, and can be under emergency, emergency braking carries out, prevent to cause bigger loss, with the above-mentioned weak point in the solution technique.

In order to achieve the above object, the present invention provides the following technical solutions: an anti-overbending early warning protection device for production of automobile sealing strips comprises a protection device body, a tractor and a guiding and flattening device, wherein the protection device body is located between the tractor and the guiding and flattening device, sealing strips are arranged between the tractor and the guiding and flattening device, and the protection device body consists of a signal transmitting device, a signal receiving device and a bottom plate;

the signal transmitting device is positioned at the right end of the bottom plate, the bottom of the signal transmitting device is provided with a hydraulic lifting device, a mounting plate is fixed at the telescopic end of the hydraulic lifting device, a first push rod, a second push rod and a third push rod are respectively fixed at the top of the mounting plate through bolts, the upper end of the third push rod is fixedly connected with a motor through bolts, the output end of the motor is connected with a rotating shaft, one end of the rotating shaft, far away from the motor, is fixed with a screw rod, the middle part of the screw rod is sleeved with a separating ring, the separating ring and the screw rod are fixedly welded, the screw rod body surface threads, positioned above the separating ring, of the screw rod are opposite in rotating direction to the rod body surface threads, positioned below the separating ring, one side of the screw rod is provided with a lifting plate, the bottom of the lifting plate is fixedly connected with the upper ends of the first, an upper moving plate is arranged on the upper portion of one side, away from the screw, of the lifting plate, a first infrared transmitting end is mounted on the upper portion of one side, away from the lifting plate, of the lifting plate, a plurality of first infrared transmitting ends are arranged, a row is formed by the plurality of first infrared transmitting ends on the upper moving plate, a second infrared transmitting end is mounted on the lower portion of one side, away from the lifting plate, of the upper moving plate, an upper moving connecting rod is fixed in the middle of one side, close to the lifting plate, of the upper moving plate, a first threaded hole is formed in one end, away from the upper moving plate, of the upper moving connecting rod, one end, away from the upper moving plate, of the upper moving connecting rod penetrates through a long-strip-shaped guide square hole and is sleeved on an upper rod body of the screw through the first threaded hole, a lower moving plate is arranged, a fourth infrared emission end is installed at the lower part of one side, far away from the lifting plate, of the lower movable plate, a lower movable connecting rod is fixed in the middle of one side, near the lifting plate, of the lower movable plate, a second threaded hole is formed in one end, far away from the lower movable plate, of the lower movable connecting rod, and one end, far away from the lower movable plate, of the lower movable connecting rod penetrates through the strip-shaped guide square hole and is sleeved on the lower rod body of the screw rod through the second threaded hole;

the signal receiving device is located at the left end of the bottom plate, the signal receiving device and the signal transmitting device are symmetrically arranged, the layout and the structure of the signal receiving device and the signal transmitting device are completely consistent, and a first infrared receiving end, a second infrared receiving end, a third infrared receiving end and a fourth infrared receiving end are installed on the signal receiving device.

Preferably, be equipped with siren and controller on the protection device body, and siren and controller set up in the workshop office, the controller pass through electric connection between A/D converter respectively and first infrared receiving terminal, the infrared receiving terminal of second, the infrared receiving terminal of third and the infrared receiving terminal of fourth, the controller passes through electric connection between D/A converter and the siren.

Preferably, the upper moving plate and the lifting plate are in sliding connection, and the lower moving plate and the lifting plate are in sliding connection.

Preferably, the bottom of the hydraulic lifting device is fixedly connected with the bottom plate through a bolt, and the bottom of the signal receiving device is connected with the bottom plate through a bolt.

Preferably, sliding connection is arranged between the upper movable connecting rod and the long-strip-shaped guide square hole, and the upper movable connecting rod is in threaded connection with the upper rod body of the screw rod through the first threaded hole.

Preferably, the lower movable connecting rod is in sliding connection with the strip-shaped guide square hole, and the lower movable connecting rod is in threaded connection with the lower rod body of the screw rod through the second threaded hole.

Preferably, the number of the first infrared receiving ends is the same as that of the first infrared transmitting ends, the first infrared receiving ends horizontally correspond to the first infrared transmitting ends one by one, the second infrared receiving ends horizontally correspond to the second infrared transmitting ends, the third infrared receiving ends horizontally correspond to the third infrared transmitting ends, and the fourth infrared receiving ends horizontally correspond to the fourth infrared transmitting ends.

Preferably, the bottom plate is located below the sealing strip, and the sealing strip is located between the signal transmitting device and the signal receiving device.

In the technical scheme, the utility model provides a technological effect and advantage:

through being equipped with four group's infrared transmitting terminals and infrared receiving terminal, play the effect of two-stage early warning protection, and through hydraulic pressure elevating gear, motor and screw rod, can adjust the sealing strip and cross curved early warning value, the warning staff that can be timely produces the problem that the line exists, guarantees the product quality of sealing strip dissection, and can be under emergency, carries out emergency braking, prevents to cause bigger loss.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front view of the signal transmitting device of the present invention;

fig. 3 is a rear view of the signal transmitting device of the present invention;

fig. 4 is a side view of the signal transmitting device of the present invention;

FIG. 5 is a schematic view of the automobile sealing strip of the present invention during normal transportation;

FIG. 6 is a schematic view of the sealing strip bulging caused by the difference in the transporting speed of the present invention;

fig. 7 is a system diagram of the present invention.

Description of reference numerals:

001 tractor, 002 sealing strip, 003 guide flattening device, 1 protective device body, 100 signal emission device, 101 up-moving plate, 102 first infrared emission end, 103 second infrared emission end, 104 down-moving plate, 105 third infrared emission end, 106 fourth infrared emission end, 107 first push rod, 108 second push rod, 109 third push rod, 110 hydraulic lifting device, 111 motor, 112 rotating shaft, 113 screw rod, 114 separating ring, 115 down-moving connecting rod, 116 up-moving connecting rod, 117 lifting plate, 200 signal receiving device, 201 first infrared receiving end, 202 second infrared receiving end, 203 third infrared receiving end, 204 fourth infrared receiving end, 300 bottom plate.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides an automobile sealing strip production anti-bending early warning protection device as shown in figures 1-6, which comprises a protection device body 1, a tractor 001 and a guiding and flattening device 003, wherein the protection device body 1 is arranged between the tractor 001 and the guiding and flattening device 003, a sealing strip 002 is arranged between the tractor 001 and the guiding and flattening device 003, and the protection device body 1 consists of a signal transmitting device 100, a signal receiving device 200 and a bottom plate 300;

the signal emitting device 100 is located at the right end of the bottom plate 300, a hydraulic lifting device 110 is arranged at the bottom of the signal emitting device 100, a mounting plate is fixed at the telescopic end of the hydraulic lifting device 110, a first push rod 107, a second push rod 108 and a third push rod 109 are respectively fixed at the top of the mounting plate through bolts, a motor 111 is fixedly connected at the upper end of the third push rod 109 through bolts, the output end of the motor 111 is connected with a rotating shaft 112, a screw 113 is fixed at one end of the rotating shaft 112 far away from the motor 111, a separating ring 114 is sleeved at the middle part of the screw 113, the separating ring 114 and the screw 113 are welded and fixed, the screw 113 has a shaft body surface thread above the separating ring 114 and a shaft body surface thread below the separating ring 114 in opposite rotation directions, a lifting plate 117 is arranged at one side of the screw 113, and the bottom of the lifting plate 117 is fixedly connected with the upper ends of the first push rod 107 and, the middle part of the lifting plate 117 is longitudinally provided with a long strip-shaped guide square hole, the upper part of one side of the lifting plate 117, which is far away from the screw 113, is provided with an upper moving plate 101, the upper part of one side of the upper moving plate 101, which is far away from the lifting plate 117, is provided with a first infrared emission end 102, the first infrared emission ends 102 are provided with a plurality of numbers, the first infrared emission ends 102 form a row on the upper moving plate 101, the lower part of one side of the upper moving plate 101, which is far away from the lifting plate 117, is provided with a second infrared emission end 103, the middle part of one side of the upper moving plate 101, which is near to the lifting plate 117, is fixedly provided with an upper moving connecting rod 116, one end of the upper moving rod 116, which is far away from the upper moving plate 101, is provided with a first threaded hole, one end of the upper moving rod 116, which is far away from the upper moving, a third infrared emission end 105 is installed on the upper portion of one side, away from the lifting plate 117, of the lower moving plate 104, a fourth infrared emission end 106 is installed on the lower portion of one side, away from the lifting plate 117, of the lower moving plate 104, a lower moving connecting rod 115 is fixed in the middle of one side, close to the lifting plate 117, of the lower moving plate 104, a second threaded hole is formed in one end, away from the lower moving plate 104, of the lower moving connecting rod 115, and one end, away from the lower moving plate 104, of the lower moving connecting rod 115 penetrates through the rectangular guide square hole and is sleeved on the lower rod body of the screw 113 through the;

the signal receiving device 200 is located at the left end of the bottom plate 300, the signal receiving device 200 and the signal transmitting device 100 are symmetrically arranged, the layout and the structure of the signal receiving device 200 and the signal transmitting device 100 are completely consistent, and a first infrared receiving end 201, a second infrared receiving end 202, a third infrared receiving end 203 and a fourth infrared receiving end 204 are installed on the signal receiving device 200;

further, in the above technical solution, an alarm and a controller are arranged on the protection device body 1, and the alarm and the controller are arranged in an office of a workshop, the controller is electrically connected with the first infrared receiving terminal 201, the second infrared receiving terminal 202, the third infrared receiving terminal 203 and the fourth infrared receiving terminal 204 through a/D converter, respectively, the controller is electrically connected with the alarm through a D/a converter, when the sealing strip 002 blocks signals between the infrared transmitting terminal and the infrared receiving terminal, the controller receives and processes information, and controls the alarm to send out light and sound alarms to workers and operators on duty;

further, in the above technical solution, the upper moving plate 101 and the lifting plate 117 are slidably connected, and the lower moving plate 104 and the lifting plate 117 are slidably connected, so that the upper moving plate 101 and the lower moving plate 104 can move up and down conveniently;

further, in the above technical solution, the bottom of the hydraulic lifting device 110 is fixedly connected with the bottom plate 300 through bolts, and the bottom of the signal receiving device 200 is connected with the bottom plate 300 through bolts, so that the connection is convenient, fast and stable;

further, in the above technical solution, the upper moving connecting rod 116 is slidably connected with the strip-shaped guide square hole, and the upper moving connecting rod 116 is in threaded connection with the upper rod body of the screw 113 through the first threaded hole, so that the screw 113 rotates to drive the upper moving connecting rod 116 to move, and thus the upper moving plate 101 is driven to move;

further, in the above technical solution, the lower moving connecting rod 115 is slidably connected to the strip-shaped guide square hole, and the lower moving connecting rod 115 is in threaded connection with the lower rod body of the screw 113 through the second threaded hole, so that the screw 113 rotates to drive the lower moving connecting rod 115 to move, and thus the lower moving plate 104 is driven to move;

further, in the above technical solution, the number of the first infrared receiving terminals 201 is the same as the number of the first infrared transmitting terminals 102, the first infrared receiving terminals 201 horizontally correspond to the first infrared transmitting terminals 102 one by one, the second infrared receiving terminals 202 horizontally correspond to the second infrared transmitting terminals 103, the third infrared receiving terminal 203 horizontally corresponds to the third infrared transmitting terminal 105, and the fourth infrared receiving terminal 204 horizontally corresponds to the fourth infrared transmitting terminal 106, so as to form a 4-layer horizontal intangible infrared signal network;

further, in the above technical solution, the bottom plate 300 is located below the sealing strip 002, and the sealing strip 002 is located between the signal transmitting device 100 and the signal receiving device 200;

the implementation mode is specifically as follows: before the sealing strip 002 is cut into sections, the protection device body 1 is placed between a tractor 001 and a guide flattening device 003, so that the passing sealing strip 002 is positioned between a signal transmitting device 100 and a signal receiving device 200 in the horizontal direction; then, the hydraulic lifting device 110 operates to synchronously adjust the lifting of the first push rod 107, the second push rod 108 and the third push rod 109, so that all devices on the upper part are adjusted to proper height positions along with the up-and-down movement, namely, the passing sealing strips 002 are positioned at the middle position between the upper moving plate 101 and the lower moving plate 104 in the height direction; then the motor 111 works, the screw 113 is driven to rotate through the rotating shaft 112, and because the upper moving connecting rod 116 and the screw 113 are in threaded connection, the upper moving connecting rod 116 and the upper moving plate 101 can move up and down along the long-strip-shaped guide square hole in the middle of the lifting plate 117, and similarly, the lower moving connecting rod 115 and the lower moving plate 104 can also move similarly; because the thread directions of the upper and lower portions of the screw 113 are opposite, when the rotating shaft 112 drives the screw 113 to rotate in one direction, the lower moving connecting rod 115 and the upper moving connecting rod 116 move in opposite directions, i.e., move in opposite directions or move away from each other, so that the upper moving plate 101 and the lower moving plate 104 can be adjusted to move simultaneously; according to the characteristics of the transported automobile sealing strips, if the bulging height is A, workers need to be reminded to check and repair the problems, the upper limit of the bulging height is B, and if the bulging height exceeds B, the inner steel sheets are subjected to plastic deformation; adjusting the distance between the upper moving plate 101 and the lower moving plate 104 to enable the vertical height of the second infrared emission end 103 and the normally transported sealing strip to be A, the vertical height of the third infrared emission end 105 and the normally transported sealing strip to be A, the vertical height of the first infrared emission end 102 and the normally transported sealing strip to be B, and the vertical height of the fourth infrared emission end 106 and the normally transported sealing strip to be B; the first infrared receiving end 201, the second infrared receiving end 202, the third infrared receiving end 203 and the fourth infrared receiving end 204 on the signal receiving device 200 are the same; therefore, the infrared signal sent by the first infrared transmitting end 102 is received by the first infrared receiving end 202, a layer of horizontal invisible infrared signal network is formed between the first infrared transmitting end and the first infrared receiving end 202, when the signal is not blocked, the equipment normally operates, when the signal is blocked, the first infrared receiving end 202 cannot receive the corresponding infrared signal, the controller judges that the sealing strip is bulged, and then corresponding alarm is triggered; in the same way, 4 groups of infrared transmitting terminals and infrared receiving terminals are arranged to form a 4-layer horizontal intangible infrared signal network; specifically, in the production process, when the transported sealing strip bulges upwards or downwards and the height reaches A, namely a signal between the second infrared transmitting end 103 and the second infrared receiving end 203 is blocked or a signal between the third infrared transmitting end 105 and the third infrared receiving end 205 is blocked, the controller judges that the sealing strip slightly bulges, and then the controller controls an alarm in a workshop office to give out light and sound alarm to remind a worker, a duty worker and the like to go to inspection processing before; if the situation that the sealing strip swells is not processed all the time, the swelling situation of the sealing strip continues to be aggravated, when the swelling height reaches B, the signal between the first infrared transmitting end 102 and the first infrared receiving end 202 is blocked, or the signal between the fourth infrared transmitting end 106 and the fourth infrared receiving end 206 is blocked, the controller judges that the situation that the sealing strip swells seriously occurs, the controller starts emergency braking, the power supply of related equipment of a production line is cut off, larger loss is prevented from being caused, and a serious alarm is sent out to remind workers in a whole plant and operators on duty to process the sealing strip immediately.

This practical theory of operation:

referring to the attached drawings 1-6 of the specification, before the cutting operation of the sealing strip 002 is started, the protection device body 1 is placed between a tractor 001 and a guide flattening device 003, so that the passing sealing strip 002 is positioned between a signal transmitting device 100 and a signal receiving device 200 in the horizontal direction; then, the hydraulic lifting device 110 works to synchronously adjust the lifting of the first push rod 107, the second push rod 108 and the third push rod 109, so that all devices on the upper part move up and down and are adjusted to proper height positions, then the motor 111 works to drive the screw 113 to rotate through the rotating shaft 112, and the positions of the upper moving plate 101 and the lower moving plate 104 are adjusted, so that the passing sealing strips 002 are positioned in the middle of the upper moving plate 101 and the lower moving plate 104 in the height direction, the vertical height of the second infrared emission end 103 and the normally transported sealing strips is A, the vertical height of the third infrared emission end 105 and the normally transported sealing strips is A, the vertical height of the first infrared emission end 102 and the normally transported sealing strips is B, and the vertical height of the fourth infrared emission end 106 and the normally transported sealing strips is B; the first infrared receiving end 201, the second infrared receiving end 202, the third infrared receiving end 203 and the fourth infrared receiving end 204 on the signal receiving device 200 are the same; specifically, in the production process, when the transported sealing strip bulges upwards or downwards and the height reaches A, namely the signal between the second infrared transmitting end 103 and the second infrared receiving end 203 is blocked or the signal between the third infrared transmitting end 105 and the third infrared receiving end 205 is blocked, the controller judges that the sealing strip slightly bulges, and controls an alarm in a workshop office to give out light and sound alarm; if the swelling condition of the sealing strip continues to be aggravated, when the swelling height reaches B, the signal between the first infrared transmitting end 102 and the first infrared receiving end 202 is blocked, or the signal between the fourth infrared transmitting end 106 and the fourth infrared receiving end 206 is blocked, the controller judges that the severe swelling condition of the sealing strip occurs, the controller starts emergency braking, and the person cuts off the power supply of the related equipment of the production line and sends out a severe warning.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (8)

1. The utility model provides an automobile sealing strip production is prevented crossing curved early warning protection device, includes protection device body (1), tractor (001) and direction flattening device (003), its characterized in that: the protection device comprises a protection device body (1), a signal transmitting device (100), a signal receiving device (200) and a bottom plate (300), wherein the protection device body (1) is located between a tractor (001) and a guiding flattening device (003), a sealing strip (002) is arranged between the tractor (001) and the guiding flattening device (003);

the signal transmitting device (100) is located at the right end of the bottom plate (300), a hydraulic lifting device (110) is arranged at the bottom of the signal transmitting device (100), an installation plate is fixed at the telescopic end of the hydraulic lifting device (110), a first push rod (107), a second push rod (108) and a third push rod (109) are fixed at the top of the installation plate through bolts respectively, a motor (111) is fixedly connected at the upper end of the third push rod (109) through bolts, the output end of the motor (111) is connected with a rotating shaft (112), a screw rod (113) is fixed at one end, far away from the motor (111), of the rotating shaft (112), a separation ring (114) is sleeved in the middle of the screw rod (113), the separation ring (114) and the screw rod (113) are fixedly welded, the screw thread of the screw rod (113) located above the separation ring (114) is opposite to the screw thread of the rod body surface located below the separation ring (114, one side of the screw rod (113) is provided with a lifting plate (117), the bottom of the lifting plate (117) is fixedly connected with the upper ends of a first push rod (107) and a second push rod (108), the middle of the lifting plate (117) is longitudinally provided with a strip-shaped guide square hole, the upper part of one side of the lifting plate (117), which is far away from the screw rod (113), is provided with an upper moving plate (101), the upper part of one side of the upper moving plate (101), which is far away from the lifting plate (117), is provided with a first infrared emitting end (102), the number of the first infrared emitting ends (102) is provided with a plurality of upper moving plates, the first infrared emitting ends (102) form a row on the upper moving plate (101), the lower part of one side of the upper moving plate (101), which is far away from the lifting plate (117), is provided with a second infrared emitting end (103), the middle part of one side of the upper moving plate (101), which, go up removal connecting rod (116) and keep away from the one end of last movable plate (101) and seted up first screw hole, the one end that goes up removal connecting rod (116) kept away from last movable plate (101) passes long strip direction square hole and cup joints on the upper portion shaft of screw rod (113) through first screw hole, one side lower part that screw rod (113) were kept away from in lifter plate (117) is equipped with down movable plate (104), it installs third infrared emission end (105) to move down one side upper portion that lifter plate (104) was kept away from lifter plate (117), it installs fourth infrared emission end (106) to move down one side lower part that lifter plate (104) was kept away from lifter plate (117), it is fixed with down removal connecting rod (115) to move down one side middle part that lifter plate (104) is close to lifter plate (117), move down one end that connecting rod (115) was kept away from down one end of movable plate (104) and seted up the second screw hole down, move down one end that connecting rod (115) was The second threaded hole is sleeved on the lower rod body of the screw rod (113);

the signal receiving device (200) is located at the left end of the bottom plate (300), the signal receiving device (200) and the signal transmitting device (100) are symmetrically arranged, the layout and the structure of the signal receiving device (200) and the signal transmitting device (100) are completely consistent, and a first infrared receiving end (201), a second infrared receiving end (202), a third infrared receiving end (203) and a fourth infrared receiving end (204) are installed on the signal receiving device (200).

2. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: be equipped with siren and controller on protection device body (1), and siren and controller set up in the workshop office, the controller pass through electric connection between A/D converter respectively and first infrared receiving terminal (201), second infrared receiving terminal (202), third infrared receiving terminal (203) and fourth infrared receiving terminal (204), the controller passes through electric connection between D/A converter and the siren.

3. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the upper moving plate (101) is in sliding connection with the lifting plate (117), and the lower moving plate (104) is in sliding connection with the lifting plate (117).

4. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the bottom of the hydraulic lifting device (110) is fixedly connected with the bottom plate (300) through bolts, and the bottom of the signal receiving device (200) is connected with the bottom plate (300) through bolts.

5. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the upper moving connecting rod (116) is in sliding connection with the long strip-shaped guide square hole, and the upper moving connecting rod (116) is in threaded connection with the upper rod body of the screw (113) through the first threaded hole.

6. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the lower movable connecting rod (115) is in sliding connection with the long strip-shaped guide square hole, and the lower movable connecting rod (115) is in threaded connection with the lower rod body of the screw (113) through a second threaded hole.

7. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the number of the first infrared receiving ends (201) is the same as that of the first infrared transmitting ends (102), the first infrared receiving ends (201) are horizontally corresponding to the first infrared transmitting ends (102) one by one, the second infrared receiving ends (202) are horizontally corresponding to the second infrared transmitting ends (103), the third infrared receiving ends (203) are horizontally corresponding to the third infrared transmitting ends (105), and the fourth infrared receiving ends (204) are horizontally corresponding to the fourth infrared transmitting ends (106).

8. The automobile sealing strip production anti-overbending early warning protection device according to claim 1, characterized in that: the bottom plate (300) is located below the sealing strip (002), and the sealing strip (002) is located between the signal transmitting device (100) and the signal receiving device (200).

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