Automatic clamp capable of detecting abnormal thickness of steel plate
By introducing detection components into the automated clamps and detecting the thickness of the steel plate by inductive contacts and connecting contact points, the problem of the abnormal thickness of the steel plate is solved in the prior art, and the effect of avoiding pressing multiple sheets during the thermoforming process is achieved, protecting the mold and improving production reliability.
Patent Information
- Application Number
- CN202422197132.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Existing automated clamping hands cannot detect abnormal thickness of the clamped steel plate, which may clamp multiple sheets of steel plates during the thermoforming process, affecting the use status of the mold or causing mold damage.
An automated clamp is designed, equipped with a detection component, including a stud and a detection slider, to detect the thickness of the steel plate by the contact state of the sensing contact point and the connecting contact point, and an emergency stop will be triggered if the thickness is abnormal.
It effectively avoids the situation of pressing multiple sheets during the thermoforming process, prevents mold damage and abnormal production, and improves production reliability and safety.
Smart Images
Figure CN222985543U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamps, in particular to an automatic clamp capable of detecting abnormal thickness of steel plates. Background Technique
[0002] Hot stamping forming is abbreviated as hot forming. The hot forming steel plate (with a tensile strength of about 550 MPa) is heated to above 900 °C by a heating furnace. At high temperature, the metallographic structure of the steel plate transforms into austenite. After the steel plate is heated and taken out of the furnace, it is transported to a hot forming die with a water cooling system by an automatic gripper, and stamped at high temperature. After forming, it is quickly cooled to below 100 °C by the die, and the high-temperature austenite structure transforms into martensite, so that the tensile strength of the part is increased to above 1300 MPa. This process is the hot forming process.
[0003] Currently in the industry, the steel plate after being taken out of the furnace is transported to the die by an automatic gripper. The automatic gripper has multiple clamps. The clamps hold and fix the steel plate after being taken out of the furnace. Then the automatic gripper moves above the die, the clamps are released, and the steel plate is placed on the die cavity on the press. The clamps are driven by cylinders to complete the clamping and releasing actions. The function of the clamps is only to hold and fix the steel plate, without additional functions, and it cannot detect whether the thickness of the clamped sheet material is abnormal. If multiple sheets of sheet material are clamped and enter the die, after the die is pressed down, since the gap between the upper die and the lower die cavity is only the thickness of one sheet material, pressing multiple sheets of material at the same time will seriously damage the die. In the light case, it will affect the use state of the die, making the die unable to continue producing parts with qualified dimensions. In the heavy case, the die cavity will crack and the die cavity steel block will be scrapped. Therefore, it is necessary to design an automatic clamp capable of detecting abnormal thickness of steel plates to improve the above problems. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an automatic clamp capable of detecting abnormal thickness of steel plates, so that the clamp has the function of detecting the thickness of the sheet material. When clamping multiple steel plates at the same time, it can detect abnormalities in time and transmit electrical signals to the automatic program of the press, so that the equipment stops in time, avoiding production abnormalities and die damage caused by pressing multiple sheets of material by the die.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] An automatic clamp capable of detecting abnormal thickness of steel plates, comprising a driving cylinder, an upper jaw and a lower jaw. The driving cylinder is used to drive the upper jaw and the lower jaw to close and clamp the steel plate. It further comprises a detection component. The detection component includes a stud connected to the lower jaw and a detection slide rod installed on the upper jaw. A through hole for the detection slide rod to pass through is formed on the upper jaw. The detection slide rod is slidably installed in the through hole. The top end of the detection slide rod extends outside the upper jaw and is fixedly connected with a first insulating pad. A connection contact is fixedly connected to the top of the first insulating pad. A second insulating pad is fixedly connected to the top of the upper jaw. An induction contact is fixedly connected to the top of the second insulating pad. The induction contact corresponds to the connection contact in position;
[0007] When the thickness of the steel plate clamped by the upper jaw and the lower jaw is normal, the connection contact is in contact with the induction contact;
[0008] When the thickness of the steel plate clamped by the upper jaw and the lower jaw is abnormal, the connection contact is not in contact with the induction contact.
[0009] As a preferred embodiment of the present utility model, a telescopic driving rod is provided at the bottom of the driving cylinder. One end of the upper jaw is fixedly connected to the bottom of the driving cylinder. A through hole for the driving rod to pass through is formed on the upper jaw. One end of the driving rod is fixedly connected to the bottom end of the driving rod.
[0010] As a preferred embodiment of the present utility model, a first avoidance groove is formed at the bottom of the upper jaw. The through hole and the detection slide rod are arranged at the first avoidance groove;
[0011] A second avoidance groove is formed at the top of the lower jaw. The stud is arranged in the second avoidance groove. The stud corresponds to the detection slide rod in position.
[0012] As a preferred embodiment of the present utility model, a threaded hole is formed in the second avoidance groove on the lower jaw. The stud is threadedly connected to the threaded hole. An adjustment wrench slot is formed at the bottom surface of the stud.
[0013] As a preferred embodiment of the present utility model, a top block is fixedly connected to the top of the stud. The top block is of a hemispherical structure. The material of the top block is polyurethane.
[0014] As a preferred embodiment of the present utility model, a limit stop block is fixedly connected to the bottom of the detection slide rod. A return spring is sleeved outside the detection slide rod and between the limit stop block and the inner wall of the first avoidance groove.
[0015] As a preferred embodiment of the present utility model, the cross sections of the detection slide rod and the through hole are both of a polygonal structure.
[0016] As a preferred embodiment of the present utility model, both the first insulating pad and the second insulating pad are made of plexiglass.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] Through the detection component provided in the present utility model, the lower jaw and the upper jaw are driven by the driving cylinder to close for clamping the steel plate. When the clamped steel plate is a single piece, the top of the stud contacts the detection slide bar and pushes the detection slide bar to move upward, thereby driving the connection contact to move upward synchronously, so that the connection contact contacts the induction contact. The detection signal is in a closed state, indicating normal operation, and the automation program continues to run. When the clamped steel plate is multiple pieces, the stud does not contact the detection slide bar, then the connection contact and the induction contact do not contact either, and the detection signal is in an open state. At this time, it is an abnormal state. The press stops urgently according to the program setting, and the alarm indicator light is turned on to prompt the abnormality, which can effectively solve the situation of pressing multiple pieces of materials during the production process of hot forming parts, and avoid the problems of production abnormality and die damage caused. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic three-dimensional structure diagram of the automatic clamp capable of detecting abnormal steel plate thickness as a whole;
[0020] Figure 2 is Figure 1 an enlarged schematic view of the structure of area A in
[0021] Figure 3 It is a schematic structure diagram of the automatic clamp capable of detecting abnormal steel plate thickness when clamping the steel plate.
[0022] In the figure: 1, driving cylinder; 101, driving rod; 2, upper jaw; 201, first avoidance groove; 3, lower jaw; 301, second avoidance groove; 4, stud; 401, top block; 5, detection slide bar; 501, limit stop block; 6, return spring; 7, first insulating pad; 8, connection contact; 9, second insulating pad; 10, induction contact. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] Embodiment:
[0025] Please refer to Figures 1 - 3, this embodiment provides an automatic clamp capable of detecting abnormal steel plate thickness, which includes a driving cylinder 1, an upper jaw 2 and a lower jaw 3. The driving cylinder 1 is used to drive the upper jaw 2 and the lower jaw 3 to close and clamp the steel plate. A telescopic driving rod 101 is arranged at the bottom of the driving cylinder 1. One end of the upper jaw 2 is fixedly connected to the bottom of the driving cylinder 1. A through hole for the driving rod 101 to pass through is provided on the upper jaw 2. One end of the driving rod 101 is fixedly connected to the bottom end of the driving rod 101. By controlling the driving cylinder 1 to work, the driving rod 101 contracts, and the lower jaw 3 and the upper jaw 2 are closed to clamp the steel plate.
[0026] In this embodiment, the automatic clamp further includes a detection component. The detection component includes a stud 4 connected to the lower jaw 3 and a detection slide rod 5 installed on the upper jaw 2. The stud 4 and the detection slide rod 5 are in corresponding positions. A through hole for the detection slide rod 5 to pass through is provided on the upper jaw 2. The detection slide rod 5 is slidably installed in the through hole. The top end of the detection slide rod 5 extends outside the upper jaw 2 and is fixedly connected with a first insulating pad 7. A connection contact 8 is fixedly connected to the top of the first insulating pad 7. The connection contact 8 is arranged in a sheet structure. A second insulating pad 9 is fixedly connected to the top of the upper jaw 2. An induction contact 10 is fixedly connected to the top of the second insulating pad 9. The induction contact 10 is arranged in two. The induction contact 10 and the connection contact 8 are in corresponding positions. The driving cylinder 1, the induction contact 10 and the connection contact 8 are electrically connected to the press automation program. When the thickness of the steel plate clamped by the upper jaw 2 and the lower jaw 3 is normal, the connection contact 8 contacts the induction contact 10. When the thickness of the steel plate clamped by the upper jaw 2 and the lower jaw 3 is abnormal, the connection contact 8 contacts the induction contact 10.
[0027] Specifically, during use, the automatic clamp moves to the steel plate after it is taken out of the furnace. The steel plate is placed between the lower jaw 3 and the upper jaw 2. The driving cylinder 1 is used to drive the lower jaw 3 and the upper jaw 2 to close and clamp the steel plate. At this time, when the clamped steel plate is a single piece, the top end of the stud 4 contacts the detection slide rod 5 and pushes the detection slide rod 5 to move upward, thereby driving the connection contact 8 to move upward synchronously, so that the connection contact 8 contacts the induction contact 10, and the detection signal is in a closed state. When the clamp is in a clamped state, it indicates normal operation, and the automation program continues to run. When the clamped steel plate is multiple pieces (more than two pieces), the stud 4 does not contact the detection slide rod 5, then the connection contact 8 and the induction contact 10 do not contact either, and the detection signal is in an open state. When the clamp is in a clamped state, this is an abnormal state at this time. The press stops urgently according to the program setting, and the alarm indicator light is lit to prompt the abnormality, which can effectively solve the situation of pressing multiple pieces of materials during the production process of hot forming parts and avoid the problems of production abnormality and die damage caused.
[0028] In this embodiment, as Figure 1As shown in the figure, a first avoidance groove 201 is formed at the bottom of the upper clamping jaw 2, and the through hole and the detection slide bar 5 are arranged at the first avoidance groove 201; a second avoidance groove 301 is formed at the top of the lower clamping jaw 3, and the stud 4 is arranged in the second avoidance groove 301. The first avoidance groove 201 and the second avoidance groove 301 provide an installation space for the detection slide bar 5 and the stud 4.
[0029] In this embodiment, as Figure 1 shown, a threaded hole is formed in the lower clamping jaw 3 within the second avoidance groove 301, and the stud 4 is threadedly connected to the threaded hole. An adjusting wrench slot is formed at the bottom surface of the stud 4. By threadedly connecting the stud 4 and the lower clamping jaw 3 through the threaded hole, and by inserting an adjusting wrench into the adjusting wrench slot, the stud 4 can be driven to rotate, so as to adjust the longitudinal height of the stud 4, thereby adjusting the stroke distance of the contact between the stud 4 and the detection slide bar 5, which is applicable to the clamping and detection of steel plates with different single-piece thicknesses, and has high applicability.
[0030] In this embodiment, as Figure 1 shown, a top block 401 is fixedly connected to the top of the stud 4. The top block 401 has a hemispherical structure, and the material of the top block 401 is polyurethane. By providing the top block 401, the problem of hard contact between the stud 4 and the detection slide bar 5, resulting in wear and damage, is avoided.
[0031] In this embodiment, as Figure 2 shown, a limit stop block 501 is fixedly connected to the bottom of the detection slide bar 5. A return spring 6 is sleeved outside the detection slide bar 5 between the limit stop block 501 and the inner wall of the first avoidance groove 201. By providing the return spring 6, when the stud 4 is separated from the detection slide bar 5, the detection slide bar 5 can be quickly reset under the action of the return spring 6, so that the connection contact 8 and the induction contact 10 are quickly separated, which is convenient for subsequent continuous detection.
[0032] In this embodiment, the cross-sections of the detection slide bar 5 and the through hole are both polygonal structures. The cross-sections of the detection slide bar 5 and the through hole can be quadrilateral, pentagonal, hexagonal, etc., so that when the detection slide bar 5 slides in the through hole, the circumferential position of the detection slide bar 5 is limited, and the problem of the connection contact 8 being misaligned due to the rotation of the detection slide bar 5 is avoided.
[0033] In this embodiment, both the first insulating pad 7 and the second insulating pad 9 are made of plexiglass. Plexiglass itself does not directly have electrical conductivity, but its insulation performance is good. Installing contacts on plexiglass can ensure the electrical isolation between the contacts and the surrounding environment, preventing safety hazards such as current leakage or short circuit. At the same time, plexiglass has high mechanical strength and impact resistance. After installing contacts on plexiglass, even if it is subjected to a certain external force impact, it can effectively protect the contacts from damage, improving durability and reliability.
[0034] Working principle: During operation, the automated clamp moves to the steel plate after it is taken out of the furnace. The steel plate is placed between the lower jaw 3 and the upper jaw 2. The lower jaw 3 and the upper jaw 2 are driven by the driving cylinder 1 to close for clamping the steel plate. When the clamped steel plate is a single piece, the top of the stud 4 contacts the detection slide bar 5 and pushes the detection slide bar 5 to move upward, thereby driving the connection contact 8 to move upward synchronously, so that the connection contact 8 contacts the induction contact 10, and the detection signal is in a closed state. When the clamp is in a clamped state, it indicates normal operation, and the automated program continues to run. When the clamped steel plate is multiple pieces, the stud 4 does not contact the detection slide bar 5, then the connection contact 8 and the induction contact 10 do not contact either, and the detection signal is in an open state. When the clamp is in a clamped state, this is an abnormal state at this time. The press stops urgently according to the program setting, and the alarm indicator light lights up to prompt the abnormality. The utility model can effectively solve the situation that the press presses multiple pieces of materials during the production process of hot-formed parts, and can avoid the change of the die state caused by pressing multiple pieces of materials, resulting in the deterioration of the product quality state, the need for the die to be re-adjusted, the increase of the debugging cost, the fracture of the die surface steel block, resulting in the scrapping of the die surface steel block, and the increase of the die repair cost and debugging cost.
[0035] The above embodiments are the preferred implementation schemes of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.
Claims
1. An automated clamp capable of detecting abnormal thickness of a steel plate, comprising a driving cylinder (1), an upper clamp (2) and a lower clamp (3), wherein the driving cylinder (1) is used to drive the upper clamp (2) and the lower clamp (3) to close and clamp the steel plate, and characterized in that: It also includes a detection component, the detection component includes a stud (4) connected to the lower clamping jaw (3) and a detection slide bar (5) installed on the upper clamping jaw (2), the upper clamping jaw (2) is provided with a through hole for the detection slide bar (5) to pass through, the detection slide bar (5) is slidably installed in the through hole, the top of the detection slide bar (5) extends to the outside of the upper clamping jaw (2) and is fixedly connected to a first insulating pad (7), the top of the first insulating pad (7) is fixedly connected to a connection contact (8), the top of the upper clamping jaw (2) is fixedly connected to a second insulating pad (9), the top of the second insulating pad (9) is fixedly connected to a sensing contact (10), and the sensing contact (10) corresponds to the position of the connection contact (8); When the thickness of the steel plate clamped by the upper clamping jaw (2) and the lower clamping jaw (3) is normal, the connecting contact (8) contacts the sensing contact (10); When the thickness of the steel plate clamped by the upper clamping jaw (2) and the lower clamping jaw (3) is abnormal, the connecting contact (8) and the sensing contact (10) are not in contact.
2. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 1, characterized in that: A retractable driving rod (101) is arranged at the bottom of the driving cylinder (1), one end of the upper clamping jaw (2) is fixedly connected to the bottom of the driving cylinder (1), a through hole for the driving rod (101) to pass through is opened on the upper clamping jaw (2), and one end of the driving rod (101) is fixedly connected to the bottom end of the driving rod (101).
3. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 1, characterized in that: A first avoidance groove (201) is provided at the bottom of the upper clamping jaw (2), and the through hole and the detection slide bar (5) are arranged at the first avoidance groove (201); A second avoidance groove (301) is provided on the top of the lower clamping jaw (3), and the stud (4) is arranged in the second avoidance groove (301), and the position of the stud (4) corresponds to that of the detection slide bar (5).
4. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 3, characterized in that: A threaded hole is provided in the second avoidance groove (301) on the lower clamping jaw (3), the stud (4) is threadedly connected in the threaded hole, and an adjustment wrench slot is provided on the bottom surface of the stud (4).
5. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 4, characterized in that: A top block (401) is fixedly connected to the top of the stud (4); the top block (401) is a hemispherical structure and is made of polyurethane.
6. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 1, characterized in that: The bottom of the detection slide bar (5) is fixedly connected to a limit stopper (501), and a return spring (6) is sleeved on the outside of the detection slide bar (5) and located between the limit stopper (501) and the inner wall of the first avoidance groove (201).
7. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 1, characterized in that: The cross sections of the detection sliding rod (5) and the through hole are both polygonal structures.
8. The automatic clamp capable of detecting abnormal thickness of steel plates according to claim 1, characterized in that: The first insulating spacer (7) and the second insulating spacer (9) are both made of organic glass.