Pressing device, crimping equipment and control method

Abstract

The invention relates to a pressing device, crimping equipment and a control method, the pressing device comprises a fixed seat, a pressing head structure, a pressing driver and a lifting driver, and the pressing head structure is movably arranged on the fixed seat; the press-fit driver is arranged on the fixed seat and connected with the pressure head structure so as to drive the pressure head structure to perform press-fit motion; the lifting driver is arranged on the fixed seat, the lifting driver is connected with the pressing head structure, and when the pressing device is in a working state, the lifting driver is used for lifting the pressing head structure in the direction opposite to the gravity direction so as to balance the dead weight of the pressing head structure. The lifting driver can lift the pressure head structure and balance the dead weight of the pressure head structure. Therefore, when the pressing driver drives the pressing head structure to perform pressing motion, the weight load of the pressing head structure does not need to be considered, so that higher-precision position control can be achieved when the pressing driver drives the pressing head structure to move, and higher-precision pressure can be output when the pressing device performs pressing operation so as to meet the pressing requirement.

Description

Technical Field

[0001] The present application relates to the technical field of display module assembly, and in particular to a pressing device, a pressing equipment and a control method. Background Art

[0002] The hot pressing bonding process in the display module refers to the process of pressing the pressing material layer (such as IC driver chip, COF cover film, FPC flexible printed circuit board, etc.) with glass (such as liquid crystal or touch screen, etc.) or flexible substrate (such as OLED flexible screen, touch layer or film material, etc.) through the reaction of anisotropic conductive film (ACF) under certain temperature and pressure conditions, so that the pressing material layer is conductive to the glass or flexible substrate.

[0003] The traditional heat-compression bonding process is usually achieved by mechanical pressing. However, with the development of products and new technologies, for miniaturized and flexible products, the traditional heat-compression bonding method can no longer meet the pressure accuracy requirements during pressing, which needs to be solved urgently. Summary of the invention

[0004] Based on this, it is necessary to provide a pressing device, a crimping equipment and a control method to address the problem that traditional pressing devices cannot meet the pressure accuracy requirements.

[0005] A first aspect of the present application provides a pressing device, which includes a fixed seat, a pressing head structure, a pressing driver and a lifting driver, wherein the pressing head structure is movably arranged on the fixed seat; the pressing driver is arranged on the fixed seat, and the pressing driver is connected to the pressing head structure to drive the pressing head structure to perform a pressing movement; the lifting driver is arranged on the fixed seat, and the lifting driver is connected to the pressing head structure. When the pressing device is in a working state, the lifting driver is used to lift the pressing head structure in a direction opposite to the direction of gravity to balance the self-weight of the pressing head structure.

[0006] In one embodiment, the pressing device also includes a connecting structure, which is hollow and includes a first side and a second side that are oppositely arranged along the pressing direction, the second side is connected to the pressing head structure, the lifting drive is connected to the first side, the pressing drive is arranged in the connecting structure and connected to the second side, the pressing drive and the lifting drive are respectively connected to the pressing head structure through the connecting structure, so that the lifting drive, the pressing drive and the pressing head structure are arranged in sequence along the pressing direction.

[0007] In one embodiment, the pressing device further includes a pressure sensor connected between the pressing head structure and the second side edge for detecting the pressure feedback by the pressing head structure.

[0008] In one embodiment, the pressing device further includes a sliding seat and a displacement driver. The sliding seat is movably arranged on the fixed seat. The pressing driver and the lifting driver are both arranged on the sliding seat. The displacement driver is fixedly arranged on the fixed seat and connected to the sliding seat to drive the sliding seat to move.

[0009] In one embodiment, the sliding seat includes a bearing portion and a hook portion connected to one end of the bearing portion close to the pressing head structure. The lifting driver is arranged on the bearing portion. The hook portion hooks into the connecting structure from the side where the first side edge is located for connection with the pressing driver, and the first side edge is located on the side of the hook portion close to the bearing portion for connection between the pressing driver and the first side edge.

[0010] In one embodiment, the pressing head structure includes a connecting seat, an adjusting seat and a pressure head. The connecting seat is connected to the pressing driver and the lifting driver. The adjusting seat is connected between the connecting seat and the pressure head. The pressing head structure further includes a rotating shaft and a first adjusting member. The connecting seat and the adjusting seat are arranged at intervals. The rotating shaft is arranged between the connecting seat and the adjusting seat for the adjusting seat to rotate relative to the connecting seat around the rotating shaft. The first adjusting member connects the connecting seat and the adjusting seat to adjust the relative angular position between the adjusting seat and the connecting seat and lock the adjusting seat and the connecting seat.

[0011] In one embodiment, the adjusting seat includes an adapter body, a first plate and a second plate stacked at intervals. The first plate is connected to the connecting seat. The second plate is connected to the pressure head. The adapter body is connected between the edges on the same side of the first plate and the second plate. The pressing head structure further includes a second adjusting member. The second adjusting member is connected to the sides of the first plate and the second plate relatively far from the adapter body. The second adjusting member can drive the first plate and the second plate to rotate relative to each other around the length direction of the adapter body and lock the first plate and the second plate. The length direction of the adapter body is perpendicular to the axis of the rotating shaft.

[0012] In one embodiment, the pressure head includes a main body, a heating tube and a thermocouple arranged in the main body. The heating tube is used for heating, and the thermocouple is used for sensing temperature; and / or, the pressing head structure further includes a heat insulation plate connected between the adjusting seat and the pressure head; and / or, the first adjusting member is configured as a threaded connecting member.

[0013] The second aspect of the present application further provides a crimping device, and the crimping device includes the crimping device as described above.

[0014] The third aspect of the present application further provides a control method, and the control method is executed by the crimping device as described above. The crimping device further includes a pressure sensor connected between the crimping driver and the head structure. The control method includes: controlling the lifting driver to lift the head structure to balance the self-weight of the head structure; according to the pressure information fed back by the pressure sensor, controlling the output mode of the crimping driver to switch between the displacement mode and the load mode.

[0015] In one embodiment, when the crimping driver is in the load mode, the magnitude of the driving force output by the crimping driver is controlled according to the pressure information fed back by the pressure sensor.

[0016] In the above-mentioned crimping device, the lifting driver can lift the head structure to balance the self-weight of the head structure. Therefore, when the crimping driver drives the head structure to perform a crimping movement, it is not necessary to consider the weight load of the head structure, so that the crimping driver can achieve a higher-precision position control when driving the head structure to move. Therefore, when the crimping device performs a crimping operation, it can output a higher-precision pressure to meet the crimping requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An isometric schematic diagram of the crimping device provided by an embodiment of the present application.

[0018] Figure 2 For Figure 1 The front view of the crimping device shown.

[0019] Figure 3 For Figure 2 The partial enlarged view at A of the crimping device shown.

[0020] Figure 4 For Figure 1 The side view of the crimping device shown.

[0021] Figure 5 For Figure 1 The isometric schematic diagram of the crimping device from another perspective shown.

[0022] Figure 6 For Figure 1 The isometric schematic diagram of the crimping structure of the crimping device shown.

[0023] Figure 7 For Figure 6 The exploded schematic diagram of the crimping structure shown.

[0024] Figure 8A schematic diagram of the modules of the crimping device provided by an embodiment of the present application.

[0025] Reference numerals: 10, crimping device; 20, controller; 100, fixed seat; 110, support plate; 120, track; 130, top seat; 140, support seat; 200, lifting driver; 300, crimping driver; 400, connection structure; 410, first side; 420, second side; 430, connection side; 440, mounting hole; 500, press head structure; 510, connection seat; 511, first groove; 520, adjustment seat; 520a, second groove; 520b, opening; 521, first plate; 522, second plate; 523, adapter; 530, pressure head; 531, main body; 532, heating tube; 533, thermocouple; 540, rotating shaft; 550, first adjusting member; 560, second adjusting member; 570, heat insulation plate; 600, pressure sensor; 700, sliding seat; 710, bearing portion; 720, hook portion; 730, receiving groove; 740, retaining piece; 800, displacement driver; 900, position sensor; S, crimping direction. Detailed implementation manners

[0026] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0028] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality" appears, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, the meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0032] In the conventional technology, the hot pressing and bonding process of a display module is performed by a pressing device, which generally includes a driver (such as a cylinder) and a pressing head. For a conventional pressing device, the following problems exist: the cylinder has its own weight and the air pressure control is not accurate enough, so it is difficult for the pressing device to output a relatively small pressure (such as a pressure less than 3 N). At the same time, the air pressure of the cylinder fluctuates, and there are factors such as friction between the cylinder body and the plunger, resulting in the inability of the pressing device to output a very precise pressure. Due to the thrust of the cylinder and the weight of the pressing head, the pressing head accelerates downward during the pressing process, which is likely to impact and damage the product. In short, it is difficult for the driver of the pressing device in the conventional technology to drive the pressing head to perform the pressing action flexibly and with high precision, resulting in the difficulty for the pressing device to achieve pressing with high pressure accuracy.

[0033] To solve the above problems, the present application provides a pressing device, which includes a pressing head structure, a pressing driver, and a lifting driver. The pressing driver and the lifting driver are respectively connected to the pressing head structure. The pressing driver drives the pressing head structure to perform a pressing action, while the lifting driver can lift the pressing head structure in a direction opposite to the direction of gravity to balance the weight of the pressing head structure, so that the pressing driver can almost ignore the influence generated by the weight of the pressing head structure when driving the pressing head structure to move. Therefore, the accuracy of the pressure output by the pressing driver driving the pressing head structure can be improved, and the accuracy and stability of the position of the pressing head can be improved. The following will detail the pressing device provided in each embodiment of the present application and the pressing equipment including the pressing device with reference to the accompanying drawings of the specification and the specific implementation manners.

[0034] Refer to Figure 1 , Figure 1 FIG. shows an isometric schematic view of a pressing device provided in an embodiment of the present application. An embodiment of the present application provides a pressing device 10, which is used to press a pressing material layer against glass or a flexible substrate. The pressing device 10 includes a fixed seat 100, a lifting driver 200, a pressing driver 300, and a pressing head structure 500. The pressing driver 300 and the lifting driver 200 are both disposed on the fixed seat 100, and the pressing head structure 500 is movably disposed on the fixed seat 100. The pressing driver 300 is connected to the pressing head structure 500 to drive the pressing head structure 500 to perform a pressing movement. The lifting driver 200 is connected to the pressing head structure 500. When the pressing device 10 is in a working state, the lifting driver 200 is used to lift the pressing head structure 500 in a direction opposite to the direction of gravity to balance the self-weight of the pressing head structure 500.

[0035] In the above-mentioned pressing device 10, the lifting driver 200 can lift the pressing head structure 500 to balance the weight of the pressing head structure 500. Therefore, when the pressing driver 300 drives the pressing head structure 500 to perform pressing movement, it is not necessary to consider the weight load of the pressing head structure 500, so that the pressing driver 300 can achieve higher precision position control when driving the pressing head structure 500 to move. Therefore, when the pressing device 10 performs pressing operation, it can output higher precision pressure to meet the pressing requirements.

[0036] Furthermore, since the lifting driver 200 balances the deadweight of the pressing head structure 500, the pressing driver 300 can directly and effectively control the position of the pressing head structure 500, thereby reducing the probability that the pressing head accelerates downward under the influence of its own weight during the pressing process, impacts the product, generates a pressure peak, and damages the product. In other words, the present application can also make the pressing process more stable and controllable.

[0037] It should be emphasized that the direction in which the lifting driver 200 lifts the pressing head structure 500 is the direction opposite to the gravity direction when the pressing device 10 is in the working state. Since the pressing device 10 is usually pressed from top to bottom, in one embodiment, the lifting driver 200 can lift the pressing head structure 500 in the direction opposite to the pressing direction of the pressing head structure 500 to balance the gravity of the pressing head structure 500.

[0038] As one of the embodiments, the pressing driver 300 can be configured as a voice coil motor. In conventional technology, once the cylinder diameter of the cylinder is determined, the pressure range of its output is limited. For a voice coil motor, the driving force of its output can be controlled by adjusting the current to achieve multi-stage pressure regulation. Of course, the pressing driver 300 can also be configured as other high-precision drivers according to requirements, which will not be described one by one here.

[0039] As one embodiment, the lifting driver 200 can be configured as a cylinder. Since the deadweight of the pressure head structure 500 remains unchanged, the lifting driver 200 is configured as a cylinder to simply and conveniently lift and balance the deadweight of the pressure head structure 500. Furthermore, the pressing device 10 further includes a solenoid valve, which is connected to the lifting driver 200 to provide a back pressure control effect for the lifting driver 200, so that the lifting driver 200 can stably balance the deadweight of the pressure head structure 500.

[0040] In one embodiment, the lifting driver 200 and the pressing driver 300 may be arranged side by side in a direction perpendicular to the pressing direction S, so that they are respectively connected to the pressing head structure 500 in a transmission manner to avoid interference.

[0041] See also Figure 2 and Figure 3In one embodiment, the lifting driver 200 and the pressing driver 300 can also be configured to be arranged in sequence along the pressing direction S, so that the lifting driver 200 and the pressing driver 300 can apply force to the pressure head structure 500 in the same direction, thereby reducing the problem of uneven force on the pressure head structure 500, resulting in accidental skewing, accidental deflection, and other problems that are not conducive to pressing.

[0042] Furthermore, the pressing device 10 further includes a connecting structure 400. The connecting structure 400 is hollow and includes a first side 410 and a second side 420. The first side 410 and the second side 420 are arranged opposite to each other along the pressing direction S. The second side 420 is connected to the pressing head structure 500, the lifting driver 200 is connected to the first side 410, and the pressing driver 300 is arranged in the connecting structure 400 and connected to the second side 420. Thus, the pressing driver 300 and the lifting driver 200 are respectively connected to the pressing head structure 500 through the connecting structure 400, so that the lifting driver 200, the pressing driver 300 and the pressing head structure 500 are arranged in sequence along the pressing direction S to reduce the risk of uneven force on the pressing head structure 500 caused by the misaligned arrangement of the three.

[0043] In this embodiment, the hollow connection structure 400 is configured so that the lifting driver 200 located relatively far away from the pressure head structure 500 in the pressing direction S can bypass the pressing driver 300 to connect with the pressure head structure 500, and the lifting driver 200, the pressing driver 300 and the pressure head structure 500 are arranged in sequence along the pressing direction S with a simple structure. In other words, the hollow connection structure 400 is configured so that the lifting driver 200 and the pressing driver 300 at different positions in the pressing direction S can provide forces to the pressure head structure 500 in approximately the same direction, thereby improving the uniformity of the force applied to the pressure head structure 500 and facilitating the pressure head structure 500 to maintain a gravitational balance state (meaning that the self-weight is offset) at any stage of the pressing process.

[0044] See also Figure 3 In one embodiment, the pressing driver 300 may be connected to a side of the second side 420 away from the pressing head structure 500. In other words, the pressing head structure 500 and the pressing driver 300 are connected to opposite sides of the second side 420, respectively.

[0045] See also Figure 3 In one embodiment, the output axis O1 of the lifting driver 200 coincides with the output axis O2 of the pressing driver 300, and the two apply force to the pressing head structure 500 in the coincident direction. Of course, since the lifting driver 200 and the pressing driver 300 drive the pressing head structure 500 to move respectively through the connecting structure 400, the output axes of the two can also be arranged in parallel.

[0046] Please continue to refer to Figure 2 and Figure 3 In one embodiment, the connection structure 400 further includes a connection side 430. The connection side 430 is connected between the first side 410 and the second side 420 along the pressing direction S, enabling the first side 410, the second side 420, the component connected to the first side 410, and the component connected to the second side 420 to move synchronously, thereby realizing the transmission function across regions (i.e., across the region where the pressing driver 300 is located).

[0047] Please refer to Figure 3 and in combination with Figure 1 In one embodiment, the number of connection sides 430 is at least two. The two connection sides 430 are arranged at intervals in a direction perpendicular to the pressing direction S and are respectively connected to the first side 410 and the second side 420. Thus, the first side 410, the second side 420, and the connection side 430 can surround to form a mounting hole 440, and the pressing driver 300 is located within the mounting hole 440.

[0048] Please refer to Figure 4 and Figure 5 In one embodiment, the pressing device 10 further includes a pressure sensor 600. The pressure sensor 600 can be connected between the pressing driver 300 and the pressing head structure 500 to detect the pressure feedback by the pressing head structure 500. For example, when the pressing head structure 500 just contacts the product, the pressure sensor 600 can detect a sudden change in pressure, from which it can be known that the pressing head structure 500 has contacted the product, and thus the driving mode of the pressing driver 300 to drive the pressing head structure 500 can be changed accordingly.

[0049] Further, the pressure sensor 600 can be connected between the pressing head structure 500 and the second side 420 for detecting the pressure feedback by the pressing head structure 500.

[0050] In one of the embodiments, the lifting driver 200 and the pressing driver 300 can be fixed on the fixed seat 100.

[0051] Please refer to Figure 4 and in combination with Figure 1, in one embodiment, the lifting driver 200 and the pressing driver 300 may also be configured to be movably disposed on the fixed base 100. Further, the pressing device 10 further includes a sliding base 700 and a displacement driver 800. The sliding base 700 is movably disposed on the fixed base 100. Both the pressing driver 300 and the lifting driver 200 are disposed on the sliding base 700. The displacement driver 800 is fixedly disposed on the fixed base 100 and connected to the sliding base 700 to drive the sliding base 700 to move. Thus, the displacement driver 800 driving the sliding base 700 to move can synchronously move the lifting driver 200, the pressing driver 300, the connection structure 400, the pressure sensor 600, and the pressing head structure 500. That is to say, in this embodiment, large-stroke displacement of multiple components can be achieved by relying on the displacement driver 800. For example, during the pressing process, the pressing head structure 500 is driven by the displacement driver 800 to approach the pressing station, and then the high-precision pressing is achieved by the combined action of the lifting driver 200 and the pressing driver 300.

[0052] Please continue to refer to Figure 4 and Figure 5 , in one embodiment, the fixed base 100 includes a track 120. The sliding base 700 and the pressing head structure 500 are respectively in sliding fit with the track 120. Since the sliding base 700 and the pressing head structure 500 are in sliding fit with the same track 120, the large-stroke movement of the sliding base 700 and the high-precision pressing movement of the pressing head structure 500 are along the same direction, improving the certainty of the position of the pressing head structure 500.

[0053] Please refer to again Figure 3 and Figure 4 , in one embodiment, the sliding base 700 includes a bearing portion 710 and a hook portion 720. The hook portion 720 is connected to one end of the bearing portion 710 close to the pressing head structure 500. The lifting driver 200 is disposed on the bearing portion 710. The hook portion 720 is hooked into the connection structure 400 from the side where the first side 410 is located for the pressing driver 300 to connect, and the first side 410 is located on the side of the hook portion 720 close to the bearing portion 710 for the pressing driver 300 to connect to the first side 410. In this embodiment, the hook portion 720 bypasses the first side 410 and is connected to the pressing driver 300 in the connection structure 400, so that the pressing driver 300 located in the connection structure 400 can also be fixedly connected to the sliding base 700 and move together with the sliding base 700, and at the same time, it does not interfere with the connection structure 400 between the lifting driver 200 and the pressing driver 300.

[0054] Please refer to Figure 3 , in one embodiment, the sliding base 700 is provided with a receiving groove 730. The hook portion 720 is one of the side walls forming the receiving groove 730, and the lifting driver 200 is disposed in the receiving groove 730.

[0055] Please refer to againFigure 4 In one embodiment, the fixed seat 100 further includes a support plate 110, a top seat 130 and a support seat 140. The track 120 is provided on the support plate 110, and the top seat 130 and the support seat 140 are connected to one end of the support plate 110 away from the pressing head structure 500. The displacement driver 800 can be configured to drive the sliding seat 700 to move by means of a screw-nut drive. Among them, the displacement driver 800 is provided on the top seat 130, the screw is connected to the displacement driver 800 and passes through the support seat 140 and is in transmission cooperation with the sliding seat 700.

[0056] In one embodiment, the pressing device 10 further includes a position sensor 900. The number of the position sensors 900 is at least two, and at least two position sensors 900 are arranged on the support plate 110 at intervals along the pressing direction S. The sliding seat 700 further includes a baffle 740. The baffle 740 is provided on the bearing portion 710. The baffle 740 is used to trigger each position sensor 900, and thus the position of the sliding seat 700 can be known.

[0057] Please refer to Figure 6 and Figure 7 In one embodiment, the pressing head structure 500 includes a connecting seat 510, an adjusting seat 520 and a pressing head 530. The connecting seat 510 is connected to the pressing driver 300 and the lifting driver 200, that is, the connecting seat 510 is connected to the second side 420 of the connecting structure 400 to connect the pressing driver 300 and the lifting driver 200 through the connecting structure 400. The adjusting seat 520 is connected between the connecting seat 510 and the pressing head 530. The pressing head structure 500 further includes a rotating shaft 540 and a first adjusting member 550. The connecting seat 510 and the adjusting seat 520 are arranged at intervals. The rotating shaft 540 is arranged between the connecting seat 510 and the adjusting seat 520, and the adjusting seat 520 is provided to rotate relative to the connecting seat 510 around the rotating shaft 540. The first adjusting member 550 connects the connecting seat 510 and the adjusting seat 520 to adjust the relative angular position between the adjusting seat 520 and the connecting seat 510 and lock the adjusting seat 520 and the connecting seat 510. By adjusting the relative angular position between the adjusting seat 520 and the connecting seat 510, the deflection angle of the pressing head 530 can be corrected, and the pressing accuracy and accuracy can be improved.

[0058] In one embodiment, the first adjusting member 550 can be configured as a threaded connection member. Screwing the first adjusting member 550 can push open or pull closer a local area of the connecting seat 510 and the adjusting seat 520 to form a movement similar to a seesaw, so that the two rotate relative to each other. When the first adjusting member 550 is not screwed, the connecting seat 510 and the rotating seat are locked by the thread.

[0059] Furthermore, the number of the first adjusting members 550 can be at least two, and at least two first adjusting members 550 can be distributed on both sides of the rotating shaft 540 to jointly adjust and lock the connecting seat 510 and the adjusting seat 520 to improve stability.

[0060] See also Figure 7 In one embodiment, a first groove 511 is recessed on a side surface of the connecting seat 510 facing the adjusting seat 520, and a second groove 520a is recessed on an end surface of the adjusting seat 520 facing the connecting seat 510. The second groove 520a is aligned with the first groove 511 to enclose a cavity for the rotating shaft 540 to be embedded.

[0061] Please refer again Figure 6 and Figure 7 In one embodiment, the adjustment seat 520 includes a first plate 521, a second plate 522 and a transfer body 523, wherein the first plate 521 is connected to the connection seat 510, and the second plate 522 is connected to the pressure head 530. The first plate 521 and the second plate 522 are arranged in a stacked manner, and the transfer body 523 is connected between the edges of the same side of the first plate 521 and the second plate 522, and the first plate 521 and the second plate 522 are spaced apart to form an opening 520b on the other side. The pressure head structure 500 also includes a second adjustment member 560, which is connected to the side of the first plate 521 and the second plate 522 that is relatively far away from the transfer body 523 (i.e., the side where the opening 520b is located). The second adjustment member 560 can drive the first plate 521 and the second plate 522 to rotate relative to each other around the length direction of the transfer body 523, and lock the first plate 521 and the second plate 522. The length direction of the transfer body 523 is perpendicular to the axis of the rotating shaft 540. Therefore, the second adjusting member 560 can be used to adjust the deflection of the pressure head 530 in another direction, so as to adjust and correct the deflection angle of the pressure head 530 and improve the pressing precision and accuracy.

[0062] In one embodiment, the second groove 520 a may be opened in the first plate 521 .

[0063] Furthermore, the second adjusting member 560 can also be configured as a threaded connection member, and the opening and closing size of the opening 520b can be adjusted by screwing the second adjusting member 560, that is, the deflection angle of the second plate 522 relative to the first plate 521 can be adjusted to adjust the deflection angle of the pressure head 530.

[0064] In one embodiment, the number of the second adjusting members 560 is at least two. One of the second adjusting members 560 is connected to the first plate 521 and abuts against the second plate 522 facing the side of the second plate 522. Screwing the second adjusting member 560 can push open the opening 520b, that is, increase the opening and closing angle of the opening 520b. Another second adjusting member 560 is connected to both the first plate 521 and the second plate 522. Screwing the second adjusting member 560 can close the spacing between the first plate 521 and the second plate 522 at the opening 520b, that is, reduce the opening and closing angle of the opening 520b. Thus, through the cooperation of the two second adjusting members 560, the opening and closing angle of the second plate 522 relative to the first plate 521 can be adjusted to adjust the deflection angle of the pressure head 530.

[0065] Please continue reading Figure 6 and Figure 7 In one embodiment, the pressure head 530 includes a main body 531 and a heating tube 532 and a thermocouple 533 disposed in the main body 531. The heating tube 532 is used to generate heat, and the thermocouple 533 is used to sense temperature so as to monitor the hot pressing temperature. The pressure head structure 500 also includes a heat insulation board 570, which is connected between the adjustment seat 520 and the pressure head 530 to reduce the heat transferred from the pressure head 530 to other structures, thereby achieving heat preservation on the one hand, and reducing the risk of deformation and reduced life of the adjustment seat 520 and the connecting seat 510 due to temperature on the other hand.

[0066] See also Figure 8 , an embodiment of the present application further provides a crimping device, the crimping device comprising the crimping device 10 as described in each embodiment. Further, the crimping device further comprises a controller 20, and the controller 20 can be configured as a PC control system or a PLC control system, etc.

[0067] The controller 20 is electrically connected to the displacement driver 800 to control the displacement driver 800 to output motion, so that the slide 700, the lifting driver 200, the pressing driver 300, the connecting structure 400 and the pressing head structure 500 move together. Furthermore, the displacement driver 800 can be configured as a servo motor, and the controller 20 can transmit a servo pulse control signal to the displacement driver 800 to control the servo motor to output motion.

[0068] The controller 20 is also connected to the lifting driver 200. The controller 20 can control the lifting driver 200 through the solenoid valve so that the lifting driver 200 balances the weight of the pressure head structure 500.

[0069] The controller 20 is also connected to the pressing driver 300 to adjust the current of the pressing driver 300 to change its driving force to meet different driving requirements.

[0070] The controller 20 is also electrically connected to the pressure sensor 600 to receive the pressure information detected by the pressure sensor 600 and fed back by the indenter structure 500.

[0071] In each embodiment of the present application, the lifting driver 200 balances the self-weight of the indenter structure 500, so that the indenter structure 500 reaches a zero balance state. The lifting driver 200 cooperates with the pressing driver 300 to achieve high-precision position driving with small pressure errors. At the same time, such a setting can also achieve a wide range of pressure adjustment, that is, the pressing device 10 can not only output a small pressure (for example, 0.1 N), but also provide a large pressure (for example, 250 N). And, according to the detection information of the pressure sensor 600 obtained by the controller 20, the output parameters of the pressing driver 300 can be adjusted in a closed loop to realize adjustable pressure during the whole process and achieve multi-stage pressure control.

[0072] An embodiment of the present application further provides a control method, which can be executed by the pressing device 10 described in each embodiment. The control method includes:

[0073] Controlling the lifting driver 200 to lift the indenter structure 500 to balance the self-weight of the indenter structure 500. Thereby, high-precision pressing, small-pressure pressing and reduction of impact during the pressing process can be achieved.

[0074] According to the pressure information fed back by the pressure sensor 600, control the output mode of the pressing driver 300 to switch between the shifting mode and the load mode. The above-mentioned shifting mode refers to the output mode of the pressing driver 300 when the pressing driver 300 drives the indenter structure 500 close to the part to be pressed of the product. The above-mentioned load mode refers to the output mode of the pressing driver 300 when the pressing driver 300 drives the indenter structure 500 to perform a pressing operation. For example, in the shifting mode, the pressing driver 300 can output a smaller pressure; in the load mode, the pressing driver 300 can output a larger pressure and output a constant pressure when needed, etc.

[0075] In one embodiment, when the pressing driver 300 is in the load mode, according to the pressure information fed back by the pressure sensor 600, control the magnitude of the driving force output by the pressing driver 300. That is, during the pressing process, the pressure magnitude can be adjusted according to the pressure fed back by the indenter structure 500 to achieve the purpose of closed-loop control and multi-stage pressure control and meet special pressing requirements.

[0076] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0077] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A pressing device, characterized in that: The pressing device comprises: Fixed seat; A pressure head structure, wherein the pressure head structure is movably disposed on the fixing seat; A pressing driver, the pressing driver is disposed on the fixing seat, and the pressing driver is connected to the pressing head structure to drive the pressing head structure to perform pressing movement; A lifting drive is arranged on the fixing seat, and the lifting drive is connected to the pressing head structure. When the pressing device is in a working state, the lifting drive is used to lift the pressing head structure in a direction opposite to the direction of gravity to balance the deadweight of the pressing head structure.

2. The pressing device according to claim 1, characterized in that: It also includes a connecting structure, which is hollow and includes a first side and a second side that are oppositely arranged along the pressing direction, the second side is connected to the pressure head structure, the lifting drive is connected to the first side, the pressing drive is arranged in the connecting structure and connected to the second side, the pressing drive and the lifting drive are respectively connected to the pressure head structure through the connecting structure, so that the lifting drive, the pressing drive and the pressure head structure are arranged in sequence along the pressing direction.

3. The pressing device according to claim 2, characterized in that: It also includes a pressure sensor, which is connected between the pressure head structure and the second side and is used to detect the pressure fed back by the pressure head structure.

4. The pressing device according to claim 2 or 3, characterized in that: It also includes a slide and a displacement driver, the slide is movably arranged on the fixed seat, the pressing driver and the lifting driver are both arranged on the slide, and the displacement driver is fixed on the fixed seat and connected to the slide to drive the slide to move.

5. The pressing device according to claim 4, characterized in that: The slide seat includes a bearing portion and a hook portion connected to one end of the bearing portion close to the pressure head structure, the lifting driver is arranged on the bearing portion, the hook portion is hooked into the connecting structure from the side where the first side edge is located, so that the pressing driver can be connected, and the first side edge is located on the side of the hook portion close to the bearing portion, so that the pressing driver can be connected to the first side edge.

6. The pressing device according to claim 1, characterized in that: The pressure head structure includes a connecting seat, an adjusting seat and a pressure head, wherein the connecting seat is connected to the pressing driver and the lifting driver, and the adjusting seat is connected between the connecting seat and the pressure head; The pressure head structure also includes a rotating shaft and a first adjusting member. The connecting seat and the adjusting seat are arranged at an interval. The rotating shaft is arranged between the connecting seat and the adjusting seat, and the adjusting seat is allowed to rotate relative to the connecting seat around the rotating shaft. The first adjusting member connects the connecting seat and the adjusting seat to adjust the relative angular position of the adjusting seat and the connecting seat, and locks the adjusting seat and the connecting seat.

7. The pressing device according to claim 6, characterized in that: The adjustment seat includes a adapter and a first plate and a second plate stacked at intervals, the first plate is connected to the connecting seat, the second plate is connected to the pressure head, the adapter is connected between the edges on the same side of the first plate and the second plate, the pressure head structure also includes a second adjusting member, the second adjusting member is connected to a side of the first plate and the second plate that is relatively far away from the adapter, the second adjusting member can drive the first plate and the second plate to rotate relative to each other around the length direction of the adapter, and lock the first plate and the second plate, the length direction of the adapter is perpendicular to the axis of the rotating shaft.

8. The pressing device according to claim 7, characterized in that: The pressure head comprises a main body and a heating tube and a thermocouple arranged in the main body, the heating tube is used for generating heat, and the thermocouple is used for sensing temperature; and / or The pressure head structure further comprises a heat insulation plate, wherein the heat insulation plate is connected between the adjustment seat and the pressure head; and / or The first adjusting member is configured as a threaded connection member.

9. A crimping device, characterized in that: The crimping equipment comprises the crimping device according to any one of claims 1 to 8.

10. A control method, performed by the pressing device according to any one of claims 1 to 8, characterized in that: The pressing device further includes a pressure sensor connected between the pressing driver and the pressing head structure, and the control method includes: Controlling the lifting driver to lift the pressure head structure to balance the deadweight of the pressure head structure; According to the pressure information fed back by the pressure sensor, controlling the output mode of the pressing driver to switch between a displacement mode and a load mode; When the pressing driver is in the load mode, the driving force output by the pressing driver is controlled according to the pressure information fed back by the pressure sensor.

Images