CN212285483U - Automatic jaw clamping amount adjusting device of plate stretcher - Google Patents
Automatic jaw clamping amount adjusting device of plate stretcher Download PDFInfo
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- CN212285483U CN212285483U CN202020185684.8U CN202020185684U CN212285483U CN 212285483 U CN212285483 U CN 212285483U CN 202020185684 U CN202020185684 U CN 202020185684U CN 212285483 U CN212285483 U CN 212285483U
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Abstract
The utility model relates to an automatic adjusting device for the jaw clamping amount of a plate stretcher, belonging to the technical field of machining, comprising a clamping amount adjusting unit and a fixing unit which are arranged relatively, wherein the clamping amount adjusting unit comprises a guide rod arranged on the inner side of a lower arm of a jaw and an elastic balloon which is arranged at one end of the guide rod close to a plate and is used for limiting the end position of the plate, and the elastic balloon is connected with a pressurizing device used for changing the diameter of the elastic balloon; the fixing unit comprises an upper arm driving device which is arranged on the upper arm of the jaw and is used for driving the upper arm of the jaw to fix the plate; the control system is connected with the supercharging device and the upper arm driving device; the control system determines the diameter of the elastic balloon according to the stretching amount of the plate, the diameter change of the elastic balloon is controlled through the pressurizing device so as to adjust the clamping amount of the plate, and the plate is fixed through the movement of the upper arm driving device. The utility model discloses a diameter of control elasticity sacculus changes, has realized the automatic adjustment to panel centre gripping volume.
Description
Technical Field
The utility model belongs to the technical field of machining, a panel stretcher centre gripping volume automatic regulating apparatus of keeping silent is related to.
Background
The stretching has the effects of straightening the plate shape and strengthening the mechanical property in the production process of the aluminum and steel alloy plate, but when the plate is stretched, the plates with different thicknesses, different strengths and different widths are stretched by adopting full jaws, the jaw amount at two ends is over 400mm, and a large amount of plate waste can be generated.
The full jaw stretching is mainly applied when the plate has high strength and large thickness. When the plate is thin and low in strength, the half jaw or less jaw clamping amount can be adopted for stretching, and the plate yield is improved.
In the prior art, half-jaw stretching generally depends on visual measurement of an operator and measurement by using a measuring tape, a plate falls off due to over-small clamping amount caused by visual measurement error, the workload is increased in measurement, and the jaw of a stretching machine is suspended in the air to cause falling injury; in addition, regarding half-jaw stretching, the same jaw clamping amount is adopted for all the plates with different thicknesses and widths, the plate yield is not improved to the maximum extent, and the high-strength alloy has the risk of jaw opening caused by too small clamping amount.
In the prior art, a wood block with a certain thickness is additionally arranged on a guide ruler of a stretcher, the wood block needs to be replaced aiming at plates with different thicknesses, and the problems of low efficiency and incapability of accurately controlling the clamping amount of a jaw exist.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide an automatic adjusting device for a clamping amount of a jaw of a sheet material stretching machine, which adjusts the clamping amount of the sheet material by changing a diameter of an elastic balloon.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a device for automatically adjusting the jaw clamping amount of a plate stretcher comprises a clamping amount adjusting unit and a fixing unit which are arranged oppositely; the clamping amount adjusting unit comprises a guide rod arranged on the inner side of the jaw lower arm and an elastic balloon arranged at one end, close to the plate, of the guide rod and used for limiting the position of the end part of the plate, and the elastic balloon is connected with a pressurizing device used for changing the diameter of the elastic balloon; the fixing unit comprises an upper arm driving device which is arranged on the upper arm of the jaw and is used for driving the upper arm of the jaw to fix the plate; the device also comprises a control system connected with the pressurizing device and the upper arm driving device, wherein the control system determines the diameter of the elastic balloon according to the stretching amount of the plate, controls the diameter of the elastic balloon by controlling the pressurizing device and realizes the fixation of the plate by controlling the movement of the upper arm driving device.
Optionally, a guide rod driving device is connected to the guide rod, the guide rod driving device is fixed on the jaw lower arm, and the guide rod moves along the stretching direction of the sheet material under the action of the guide rod driving device.
Optionally, the guide rod driving device is a turbine driving device, and the turbine driving device comprises a turbine driving motor and a turbine fixed on an output shaft of the turbine driving motor; and a spiral groove matched with the turbine is formed in one end, far away from the elastic balloon, of the guide rod.
Optionally, a chopping block is arranged in the jaw relatively, and a pattern is arranged on one surface, close to the plate, of the chopping block.
Optionally, the resilient balloon is a hydraulic balloon.
Optionally, the fixing unit comprises a lower arm driving device arranged on the lower jaw arm for driving the lower jaw arm to move.
Optionally, the upper arm drive and/or the lower arm drive is a hydraulic cylinder.
Optionally, the clamping amount adjusting unit further comprises a measuring element arranged on the guide rod and used for measuring the diameter of the elastic balloon, and the measuring element is connected with a control system.
Optionally, the measuring element is a CCD probe.
The beneficial effects of the utility model reside in that:
the minimum clamping amount of the plate can be determined by accurately calculating aiming at the plates with different thicknesses and widths; in the process of preparing the plate stretching, the control system can automatically calculate and adjust the position of the plate in the jaw without manual intervention, and can accurately and efficiently complete the preparation work before stretching; on one hand, the stretching efficiency of the plate is improved, and the risk caused by manual evaluation of the clamping amount of the jaw of the stretcher is reduced; the number of operators of the stretcher is reduced, and the labor cost is reduced. On the other hand, the clamping amount of the jaw is reduced, and the yield of the plate is improved. Especially for thin plates, the maximum tensile force required in the plate stretching process is reduced, and the clamping amount of the plate can be obviously reduced by adopting the method.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of an application of the automatic jaw clamping amount adjusting device of the plate stretcher according to the present invention;
fig. 2 is a schematic structural view of the automatic jaw clamping amount adjusting device of the panel stretcher of the present invention.
Reference numerals: the automatic clamping device comprises a first hydraulic cylinder 1, a second hydraulic cylinder 2, an expansion rod 3, a stretcher trolley 4, a stretcher beam 5, an automatic clamping amount adjusting device 6, a control system 7, a plate material 8, an upper cutting board 601, a lower cutting board 602, a lower arm driving device 603, an upper arm driving device 604, a pressurizing device 605, a guide rod driving device 606, a guide rod 607, a measuring element 608, an elastic balloon 609, a lower jaw arm 610 and an upper jaw arm 611.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 2, an automatic adjusting device for a clamping amount of a jaw of a sheet material stretching machine includes a clamping amount adjusting unit and a fixing unit which are oppositely disposed; the clamping amount adjusting unit comprises a guide rod 607 arranged on the inner side of the jaw lower arm 610 and an elastic balloon 609 arranged at one end of the guide rod 607 close to the sheet material 8 and used for limiting the end position of the sheet material 8, and the elastic balloon 609 is connected with a pressurizing device 605 used for changing the diameter of the elastic balloon; the fixing unit comprises an upper arm driving device 604 which is arranged on the upper jaw arm 611 and is used for driving the upper jaw arm 611 to fix the plate 8; the device also comprises a control system 7, wherein the control system 7 is connected with the supercharging device 605 and the upper arm driving device 604; the control system 7 determines the diameter of the elastic balloon 609 according to the stretching amount of the sheet material 8, controls the diameter of the elastic balloon 609 by controlling the pressurizing device 605, and realizes the fixation of the sheet material 8 by controlling the movement of the upper arm driving device 604.
Further, a guide rod driving device 606 is connected to the guide rod 607, the guide rod driving device 606 is fixed on the jaw lower arm 610, and the guide rod 607 moves along the stretching direction of the plate 8 under the action of the guide rod driving device 606; the guide rod driving device 606 is a turbine driving device, and the turbine driving device comprises a turbine driving motor and a turbine fixed on an output shaft of the turbine driving motor; one end of the guide rod 607 far away from the elastic balloon 609 is provided with a spiral groove matched with the turbine.
Further, the elastic balloon 609 is a hydraulic balloon, the pressurizing device 605 is a hydraulic system, the hydraulic system can be a hydraulic pump, and the hydraulic system outputs hydraulic pressure to pressurize the hydraulic balloon, so that the diameter of the hydraulic balloon is changed, and the end position of the plate 8 is adjusted.
Further, the clamping amount adjusting unit further comprises a measuring element 608 arranged on the guide rod 607 and used for measuring the diameter of the elastic balloon, wherein the measuring element 608 is a CCD probe, and the measuring element 608 is connected with the control system 7; the control system 7 analyzes the diameter of the elastic balloon 609 through a real-time high-definition picture of the CCD probe, and the pressurizing device 605 stops pressurizing when the diameter of the elastic balloon 609 reaches the optimal position of the plate clamping amount. The optimum position of the clamping amount refers to the position of the minimum clamping amount of the plate material, and is also a theoretical clamping position.
In order to increase the friction force in the stretching process, the utility model discloses keep silent the inboard and be provided with the chopping block relatively, the chopping block is close to the one side of panel 8 and is equipped with the decorative pattern.
Further, the fixing unit comprises a lower arm driving device 603 provided on the lower jaw arm 610 for driving the lower jaw arm 610 in motion.
Further, the upper arm driving device 604 and the lower arm driving device 603 are both hydraulic cylinders.
The utility model discloses a theory of operation does: the elastic balloon 609 is pressurized by pressurization device 605, under the command of control system 7, to deform it; the diameter of the elastic balloon 609 is monitored by a real-time high-definition CCD probe of the measuring element 608, and when the diameter of the elastic balloon 609 reaches the optimal position of the clamping amount of the plate 8, the control system 7 sends an instruction to stop the pressurizing device 605 from pressurizing the elastic balloon 609.
Because the solid solution state of the alloy plate is different, and the strength of the rolled plate is different, the tensile force required by the plates in different states is different, so that the corresponding tensile force parameters are set for the plates in different states, the corresponding state parameter data packets are manufactured, the corresponding state parameter data packets are directly called during stretching, and the misoperation of operators can be reduced.
In the operation process, an operator only needs to input the alloy grade and the state parameters of the plate and the thickness and the width of the plate, the control system 7 automatically calculates the jaw clamping amount required by the stretching, automatically controls the clamping amount and ensures that the jaw clamping amount is the optimal choice.
Owing to use the utility model discloses, the operator only need input the alloy brand, state, panel thickness and the panel width of supplied materials on control system 7's operation interface, control system 7 automatic calculation this tensile required centre gripping volume of keeping silent to diameter automatic control centre gripping volume through control elasticity sacculus 609, the centre gripping volume of guaranteeing to keep silent is the optimal choice, has not only accomplished the work of prestretching of panel safely high-efficiently, has improved the yield of product moreover.
Examples
An automatic jaw clamping amount adjusting device of a plate stretcher comprises a first hydraulic cylinder 1, a second hydraulic cylinder 2, an expansion rod 3, a stretcher trolley 4, a cross beam 5, an automatic clamping amount adjusting device 6, a control system 7 and a plate 8, wherein the automatic clamping amount adjusting device 6 comprises a cutting plate, a lower arm driving device 603, an upper arm driving device 604, a pressurizing device 605, a guide rod driving device 606, a guide rod 607, a measuring element 608, an elastic balloon 609, a lower jaw arm 610 and an upper jaw arm 611; the mounting position and function of the main structure are as follows:
first hydraulic cylinder 1 and second hydraulic cylinder 2: the maximum length of a plate for the wing is 38m, and a single hydraulic cylinder cannot cover the stroke of 5.2 m-38 m, so that the first hydraulic cylinder 1 and the second hydraulic cylinder 2 are set, and the first hydraulic cylinder 1 and the second hydraulic cylinder 2 are matched for use, so that the stroke of the stretcher is improved; the first hydraulic cylinders 1 are arranged at two ends of the stretcher and can drive the hydraulic trolley to move left and right together with the second hydraulic cylinders 2, and the first hydraulic cylinders 1 are responsible for adjusting the distance between the two ends of the stretcher and the second hydraulic cylinders 2, have the advantages of long stroke and high speed and are mainly responsible for adjusting the stroke of the stretcher before stretching the plate 8; the second cylinder has the advantages of large tension and high precision, is mainly responsible for accurate position movement when the plate 8 is stretched, and provides driving force for the left and right movement of the stretcher trolley 44.
The telescopic rod 3: one end is connected with a second hydraulic cylinder 2, and the other end is connected with a stretcher trolley 4 which can be extended and shortened.
Stretcher cart 4: one end of the telescopic rod 3 is connected, the second hydraulic cylinder 2 provides driving force to stretch the plate 8, and the lower end of the stretcher trolley 4 is provided with a trolley rail.
Stretcher beam 5: the middle part of the stretcher trolley 4 is contacted with the cross beam 5 of the stretcher, and the roller wheels contacted with the upper surface and the lower surface of the cross beam 5 are arranged on the stretcher trolley 4, so that the stability of the plate 8 in the stretching process is ensured.
Automatic clamping amount adjusting device 6: is arranged on the stretcher trolley 4 and clamps the plate 8 through the upper arm driving device 604.
Cutting boards: the stretching device comprises an upper anvil plate 601 arranged on an upper jaw arm 611 and a lower anvil plate 602 arranged on a lower jaw arm 610, wherein the upper anvil plate 601 and the lower anvil plate 602 are arranged oppositely, the meshed surfaces of the upper anvil plate 601 and the lower anvil plate 602 are provided with patterns, the patterns can increase friction force in the stretching process, and a plate 8 is clamped under the driving of an upper arm driving device 604.
Elastic balloon 609: the diameter of the pressure booster 605 is changed by the hydraulic pressure of the pressure booster, so that the optimal position of the clamping amount of the control material, namely the theoretical clamping position, is accurately controlled, and the measuring element 608 and the elastic balloon 609 are fixed on the guide rod 607 and move forward and backward along with the guide rod 607.
The supercharging device 605 is: and (3) applying pressure to the elastic balloon 609 by receiving an instruction of an information processing system to enable the elastic balloon 609 to deform, analyzing the diameter of the elastic balloon 609 by the information processing system through a real-time high-definition photo of the CCD probe, and stopping pressurizing the elastic balloon 609 when the diameter of the elastic balloon 609 reaches the optimal position of the plate clamping amount.
The guide rods 607: the guide rod driving device 606 is fixed in a jaw of the stretcher trolley 4, and the turbine moves forward and backward under the driving of the servo motor. The guide rod 607 can be accurately stopped at the theoretical clamping position of the plate 8, when the plate 8 enters the jaw and contacts with the guide rod 607, and the pressure exceeds the maximum value of the set pressure of the control system 7, the control system 7 can send a command to stop the stretcher trolley 4 from moving, the plate 8 is at the theoretical clamping position at the moment, after the plate 8 stops moving, the guide rod 607 returns to the original position after determining that the plate 8 is at the theoretical clamping position, and at the moment, the guide rod 607 and the elastic balloon 609 are not in the closing area of the jaw.
Guide bar drive 606: the servo motor is arranged inside and fixed on the stretcher trolley 4, the guide rod 607 can be driven to move forwards and backwards, and the servo motor can accurately control the position of the guide rod 607.
The measurement element 608: the CCD probe of the measuring element 608 can continuously take a high-definition picture in real time, and transmits the picture to the information processing system of the man-machine friendly interface of the control system 7 through a line, and when the balloon diameter reaches a preset value of the control system 7, the control system 7 sends an instruction to stop the pressurizing device 605 from pressurizing the elastic balloon 609.
The operation steps of this embodiment are:
1. the apparatus is opened and the stretcher trolley 4 is moved along the cross beam 5 of the stretcher to a set position.
2. The sheet 8 is placed in a stretcher, and the thickness, width, sheet designation and status information of the sheet are input on the operation interface of the control system 7.
3. The control system 7 automatically calculates the maximum tensile force required to stretch the sheet and from this calculates the minimum amount of grip required to stretch the sheet.
4. The guide rod driving device 606 drives the guide rod 607 to move to the theoretical clamping position of the plate. The right side of keeping silent is the transposition structure, and the left side is relative arrangement's upper chopping board 601, lower chopping board 602, and the occlusal surface of chopping board is equipped with the decorative pattern for increase frictional force when the centre gripping panel 8. The guide rod driving device 606 is driven by a servo motor, the guide rod driving device 606 drives the guide rod 607 to stop moving when the guide rod 607 moves to the theoretical clamping position of the plate, and when the plate 8 moves to contact with the guide rod 607, the control system 7 receives a signal to stop the plate 8 from continuing to advance.
5. The pressurizing device 605 outputs hydraulic pressure to pressurize the hydraulic balloon 603 according to the instruction of the control system 7, the control system 7 analyzes the diameter of the hydraulic balloon 603 through real-time high-definition pictures of a CCD probe of the measuring element 608, and when the diameter of the hydraulic balloon 603 reaches the optimal position of the plate clamping amount, the pressurizing of the hydraulic balloon 603 is stopped. An elastic balloon 609 is integrated with guide 607, and when guide 607 moves, elastic balloon 609 is driven to move, and when sheet 8 is in contact with elastic balloon 609, elastic balloon 609 transmits pressure to guide 607, and guide 607 stops the movement of sheet 8 through control system 7.
6. The sheet material 8 is driven by the stretcher trolley 4 to advance, when the sheet material 8 is in contact with the elastic balloon 609, feedback information is provided for the control system 7, and the sheet material 8 stops advancing. The left side of the jaw is a plate 8, the right end of the jaw is a twisted structure, when the plate 8 moves rightwards under the driving of the stretcher 4, when the plate 8 is in contact with the elastic balloon 609, the elastic balloon 609 transmits pressure to the guide rod 607, the guide rod 607 feeds back a pressure signal to the control system 7, and the control system 7 stops the movement of the plate 8.
7. The jaws on the two sides of the plate stretcher are symmetrical devices, and the optimal clamping amount of the plate 8 is determined by adopting the same measures.
8. The interface of the control system 7 shows the jaw clamping amount of the plate 8, and after manual confirmation, the guide rod 607 retreats under the action of the guide rod driving device 606 and exits from the chopping board area. The guide rod 607 and the elastic balloon 609 play a role in determining the clamping position, when the clamping position of the plate is determined, the guide rod 607 and the elastic balloon 609 move rightwards under the driving of the guide rod driving device 606, and the structure of the elastic balloon 609 and the guide rod 607 cannot be damaged when the jaws are pressed on the plate 8 under the driving of the upper arm driving device 604.
9. The upper arm of the jaw moves downwards to clamp the plate 8 under the drive of the upper arm driving device 604, and then enters a stretching process.
The utility model obtains the minimum clamping amount of different types of plates by accurately calculating the alloy plates with different thicknesses, widths and states; in the process of preparing the plate for stretching, the stretcher can automatically calculate the position of the plate in the jaw, the system automatically regulates and controls the position of the plate without manual intervention, the preparation work before stretching can be accurately and efficiently finished, the stretching efficiency of the plate is improved, and the risk caused by manually evaluating the clamping amount of the jaw is reduced; meanwhile, the number of operators of the stretcher is reduced, and the labor cost is reduced. Due to the fact that the clamping amount of the jaw is reduced, the yield of the plate is improved, particularly for a thin plate, the maximum stretching force required in the plate stretching process is reduced, and the clamping amount of the plate can be obviously reduced by the adoption of the method.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a panel stretcher is kept silent clamping amount automatic regulating apparatus which characterized in that: comprises a clamping amount adjusting unit and a fixing unit which are arranged oppositely;
the clamping amount adjusting unit comprises a guide rod arranged on the inner side of the jaw lower arm and an elastic balloon arranged at one end, close to the plate, of the guide rod and used for limiting the position of the end part of the plate, and the elastic balloon is connected with a pressurizing device used for changing the diameter of the elastic balloon;
the fixing unit comprises an upper arm driving device which is arranged on the upper arm of the jaw and is used for driving the upper arm of the jaw to fix the plate;
the device also comprises a control system connected with the pressurizing device and the upper arm driving device, wherein the control system determines the diameter of the elastic balloon according to the stretching amount of the plate, controls the diameter of the elastic balloon by controlling the pressurizing device and realizes the fixation of the plate by controlling the movement of the upper arm driving device.
2. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 1, wherein: the guide rod is connected with a guide rod driving device, the guide rod driving device is fixed on the jaw lower arm, and the guide rod moves along the stretching direction of the plate under the action of the guide rod driving device.
3. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 2, wherein: the guide rod driving device is a turbine driving device.
4. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 1, wherein: chopping blocks are oppositely arranged in the jaws, and patterns are arranged on one surfaces, close to the plates, of the chopping blocks.
5. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 1, wherein: the elastic balloon is a hydraulic balloon.
6. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 1, wherein: the fixing unit comprises a lower arm driving device which is arranged on the lower jaw arm and is used for driving the lower jaw arm to move.
7. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 6, wherein: the upper arm drive and/or the lower arm drive is a hydraulic cylinder.
8. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 1, wherein: the clamping amount adjusting unit further comprises a measuring element which is arranged on the guide rod and used for measuring the diameter of the elastic saccule, and the measuring element is connected with a control system.
9. The device for automatically adjusting the jaw clamping amount of the plate stretching machine according to claim 8, wherein: the measuring element is a CCD probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020185684.8U CN212285483U (en) | 2020-02-19 | 2020-02-19 | Automatic jaw clamping amount adjusting device of plate stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020185684.8U CN212285483U (en) | 2020-02-19 | 2020-02-19 | Automatic jaw clamping amount adjusting device of plate stretcher |
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| Publication Number | Publication Date |
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| CN212285483U true CN212285483U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020185684.8U Active CN212285483U (en) | 2020-02-19 | 2020-02-19 | Automatic jaw clamping amount adjusting device of plate stretcher |
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| CN (1) | CN212285483U (en) |
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2020
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An automatic adjustment device for jaw clamping amount of plate stretching machine Effective date of registration: 20210730 Granted publication date: 20210105 Pledgee: Bank of Harbin Co.,Ltd. Shenyang Branch Pledgor: TIANJIN ZHONGWANG ALUMINIUM INDUSTRY Co.,Ltd. Registration number: Y2021990000659 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |