Pressure holding fixture

Abstract

The present invention provides a pressure-maintaining clamp, which includes a first clamp and a second clamp for clamping and pressing a product to be pressure-maintained; a first magnetic attraction portion and a first electromagnet are arranged on the second surface of the first clamp, and a second magnetic attraction portion and a first magnet are arranged on the first surface of the second clamp; when the pressure-maintaining clamp is in a pressure-maintaining state, the first magnetic attraction portion and the second magnetic attraction portion are magnetically attracted to each other; when the pressure-maintaining clamp is in a pressure-releasing state, the first electromagnet and the first magnet are magnetically repelled, and the first clamp and the second clamp are separable. After placing the product to be pressure-maintained and a clamp in another clamp in sequence, the first clamp and the second clamp can automatically clamp and press the product to be pressure-maintained under the action of the adsorption force between the first magnetic attraction portion and the second magnetic attraction portion; after the pressure-maintaining is completed and the first electromagnet is energized, the clamp on the pressure-maintained product can be removed under the action of the repulsive force between the first electromagnet and the first magnet, and the pressure-maintained product can be taken out.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of electronic equipment assembly, and in particular to a pressure-maintaining clamp. Background Art

[0002] In the existing electronic equipment assembly process, after the parts are glued and bonded, the glue needs to be pressurized and cured to achieve an effective bonding effect. For example, after the screen and the shell of a mobile phone are glued and bonded, a pressure-maintaining fixture is needed to maintain the pressure. The current pressure-maintaining fixture usually includes two clamps, which are connected by a snap-on structure. When in use, the glued product is first placed on one clamp, and then the other clamp is manually buckled. After the pressure is maintained, the pressure-maintaining fixture also needs to be manually removed. Since the use of existing pressure-maintaining fixtures requires manual operation, the assembly efficiency of the product will be reduced. Summary of the invention

[0003] The embodiment of the present invention is to provide a pressure-maintaining clamp, aiming to solve the problem that the use of the existing pressure-maintaining clamp requires manual operation, which reduces the assembly efficiency of the product.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a pressure-maintaining clamp, comprising a first clamp and a second clamp for clamping and pressing a product to be pressure-maintained;

[0005] The first clamp and the second clamp each have a first surface and a second surface opposite to each other in a clamping direction, a first magnetic attraction portion and a first electromagnet are arranged on the second surface of the first clamp, and a second magnetic attraction portion and a first magnet are arranged on the first surface of the second clamp corresponding to the first magnetic attraction portion and the first electromagnet respectively;

[0006] Wherein, when the pressure-maintaining fixture is in the pressure-maintaining state, the second surface of the first fixture is close to the first surface of the second fixture, and the first magnetic attraction portion is magnetically attracted to the second magnetic attraction portion;

[0007] When the pressure-maintaining clamp is in a depressurized state, the first electromagnet is energized, the first electromagnet and the first magnet magnetically repel each other, and the first clamp and the second clamp are separable.

[0008] The present invention arranges a first magnetic attraction part and a first electromagnet on the first clamp and the second clamp respectively, and after the product to be pressurized and one clamp are placed in the other clamp in sequence, the first clamp and the second clamp can automatically clamp and press the product to be pressurized under the action of the adsorption force between the first magnetic attraction part and the second magnetic attraction part; after the pressure holding is completed and the first electromagnet is energized, the clamp on the pressure-holding product can be removed under the action of the repulsive force between the first electromagnet and the first magnet, and the pressure-holding product can be taken out. The pressure-holding clamp can be well used in automated machinery to realize automation during pressing and disassembly, thereby effectively meeting large-scale automated production, improving product assembly efficiency, and reducing the influence of human factors.

[0009] Preferably, in the pressure-maintaining fixture, a plurality of the first magnetic attraction portions are provided at intervals along the circumferential direction of the first fixture, and a plurality of the second magnetic attraction portions are provided corresponding to the plurality of the first magnetic attraction portions.

[0010] Preferably, in the pressure-maintaining fixture, a plurality of the first electromagnets are arranged at intervals along the circumference of the first fixture, and a plurality of the first magnets are arranged corresponding to the plurality of the first electromagnets.

[0011] Preferably, in the pressure-maintaining fixture, a first conductive contact electrically connected to the first electromagnet is provided on the first surface of the first fixture.

[0012] Preferably, in the pressure-maintaining fixture, the first magnet is a permanent magnet.

[0013] Preferably, in the pressure-maintaining fixture, a third magnetic attraction portion and a second magnet are provided on a first surface of the first fixture, and a fourth magnetic attraction portion and a second electromagnet are provided on a second surface of the second fixture corresponding to the third magnetic attraction portion and the second magnet, respectively;

[0014] The two pressure-maintaining clamps can be stacked through the first clamp and the second clamp. When the second clamp of another pressure-maintaining clamp is stacked on the first clamp, the first surface of the first clamp is close to the second surface of the second clamp stacked thereon, the third magnetic attraction part is magnetically attracted to the fourth magnetic attraction part, and if the second electromagnet is energized, the second electromagnet and the second magnet are magnetically repelled, and the first clamp and the second clamp stacked thereon can be separated.

[0015] Preferably, in the pressure maintaining clamp, the first clamp is provided with a first mounting hole corresponding to the first magnetic attraction part, the first mounting hole passes through the first surface and the second surface of the first clamp, a first magnetic body is provided at the first mounting hole, an end of the first magnetic body close to the second surface of the first clamp forms the first magnetic attraction part, and an end of the first magnetic body close to the first surface of the first clamp forms the third magnetic attraction part.

[0016] Preferably, in the pressure maintaining clamp, the second clamp is provided with a second mounting hole corresponding to the second magnetic attraction part, the second mounting hole passes through the first surface and the second surface of the second clamp, a second magnetic body is provided at the second mounting hole, the second magnetic body is formed at one end close to the first surface of the second clamp, and the fourth magnetic attraction part is formed at one end of the second magnetic body close to the second surface of the second clamp.

[0017] Preferably, in the pressure-maintaining fixture, the first magnetic body is a permanent magnet.

[0018] Preferably, in the pressure-maintaining fixture, the second magnetic body is a permanent magnet.

[0019] Preferably, in the pressure-maintaining fixture, the second magnet is a permanent magnet.

[0020] Preferably, in the pressure-maintaining fixture, a second conductive contact electrically connected to the second electromagnet is provided on the first surface of the second fixture.

[0021] Preferably, in the pressure-maintaining clamp, the first magnetic attraction portion and the first electromagnet are both located outside a region of the first clamp that is used to abut against the product to be pressure-maintained.

[0022] Preferably, in the pressure-maintaining clamp, at least one of the second surface of the first clamp and the first surface of the second clamp is provided with a limiting groove in an area for abutting against the product to be pressure-maintained, and the limiting groove is used to accommodate and limit the product to be pressure-maintained.

[0023] Preferably, in the pressure-maintaining fixture, the area between the first surface and the second surface of the first fixture is a peripheral side surface of the first fixture, and a first convex edge extending along the circumference of the first fixture is convexly provided on the peripheral side surface of the first fixture.

[0024] Preferably, in the pressure-maintaining fixture, a peripheral side surface of the second fixture is located between the first surface and the second surface of the second fixture, and a second convex edge extending along the circumference of the second fixture is convexly provided on the peripheral side surface of the second fixture.

[0025] Preferably, in the pressure-maintaining fixture, a first fool-proofing structure is provided on the first fixture, and a second fool-proofing structure is provided on the second fixture corresponding to the first fool-proofing structure.

[0026] Preferably, in the pressure-maintaining fixture, one of the second surface of the first fixture and the first surface of the second fixture is provided with a first positioning protrusion, and the other is provided with a first positioning groove corresponding to the first positioning protrusion;

[0027] When the pressure-maintaining fixture is in a pressure-maintaining state, the first positioning protrusion extends into the first positioning groove.

[0028] Preferably, in the pressure-maintaining fixture, a second positioning protrusion is provided on one of the first surface of the first fixture and the second surface of the second fixture, and a second positioning groove is provided on the other surface corresponding to the second positioning protrusion;

[0029] When the second clamp which is another pressure-maintaining clamp is superimposed on the first clamp, the second positioning protrusion extends into the second positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0031] Figure 1 It is a structural schematic diagram of a pressure-maintaining fixture in an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure of the first clamp at the first surface;

[0033] Figure 3 for Figure 1 A schematic diagram of the structure of the first clamp at the second surface;

[0034] Figure 4 for Figure 1 A schematic diagram of the structure of the second clamp at the first surface;

[0035] Figure 5 for Figure 1 Schematic diagram of the structure of the second clamp at the second surface.

[0036] Description of the accompanying drawings of the present invention:

[0037] Label name Label name 100 Pressure holding fixture 2 Second fixture 1 First fixture 21 Second magnetic attraction part 11 The first magnetic attraction part 22 First magnet 12 First electromagnet 23 Fourth magnetic attraction part 121 First conductive contact 24 Second electromagnet 13 The third magnetic attraction part 241 Second conductive contact 14 Second magnet 25 Second convex edge 15 First convex edge 26 The second foolproof structure 16 The first foolproof structure 27 First positioning protrusion 17 The first positioning groove 28 Second positioning groove 18 Second positioning protrusion 3 Limit slot

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention provides a pressure-maintaining fixture, which can be used in the assembly of electronic products such as mobile phones. The pressure-maintaining fixture is used to maintain the pressure of the product to be pressure-maintained after dispensing. The following will take the mobile phone as an example to introduce the product to be pressure-maintained. Figures 1 to 5 A preferred embodiment of the pressure-maintaining fixture provided by the present invention is shown.

[0043] See also Figure 1 , Figure 3 and Figure 4In this embodiment, the pressure-holding clamp 100 includes a first clamp 1 and a second clamp 2 for clamping and pressing a product to be pressure-held (not shown in the figure); the first clamp 1 and the second clamp 2 both have a first surface and a second surface opposite to each other in the clamping direction, and a first magnetic attraction portion 11 and a first electromagnet 12 are provided on the second surface of the first clamp 1, and a second magnetic attraction portion 21 and a first magnet 22 are provided on the first surface of the second clamp 2 corresponding to the first magnetic attraction portion 11 and the first electromagnet 12 respectively; wherein, when the pressure-holding clamp 100 is in a pressure-holding state, the second surface of the first clamp 1 is close to the first surface of the second clamp 2, and the first magnetic attraction portion 11 and the second magnetic attraction portion 21 are magnetically attracted to each other; when the pressure-holding clamp 100 is in a pressure-removing state, the first electromagnet 12 is energized, the first electromagnet 12 and the first magnet 22 are magnetically repelled, and the first clamp 1 and the second clamp 2 are separable.

[0044] Specifically, the dispensing product is first placed on one of the first clamp 1 and the second clamp 2, and then the other clamp is pressed and placed against the one clamp. After the other clamp is placed, the first magnetic attraction part 11 on the first clamp 1 and the second magnetic attraction part 21 on the second clamp 2 are magnetically attracted to each other. Under the action of the adsorption force between the first magnetic attraction part 11 and the second magnetic attraction part 21, the first clamp 1 and the second clamp 2 can automatically clamp and press the dispensing product.

[0045] When the glue-dispensing product is pressurized by assembling the pressure-maintaining fixture 100, the glue-dispensing product can be placed on the second surface of the first fixture 1 first, and then the second fixture 2 is pressed onto the first fixture 1; or the glue-dispensing product can be placed on the first surface of the second fixture 2 first, and then the first fixture 1 is pressed onto the second fixture 2. The following will take the example of placing the glue-dispensing product on the first surface of the second fixture 2 first, and then pressing the first fixture 1 onto the second fixture 2. At the same time, the direction in which the first fixture 1 and the second fixture 2 clamp the product to be pressurized (i.e., the clamping direction) is defined as the up-down direction, and when the pressure-maintaining fixture 100 is in the depressurized state, the first fixture 1 is located above the second fixture 2.

[0046] The first surface and the second surface of the first clamp 1 are the upper surface and the lower surface of the first clamp 1, respectively. Similarly, the first surface and the second surface of the second clamp 2 are the upper surface and the lower surface of the second clamp 2, respectively. The first magnetic attraction portion 11 and the second magnetic attraction portion 21 are respectively provided on the second surface of the first clamp 1 and the first surface of the second clamp 2. When the pressure-holding clamp 100 is in the pressure-holding state, the second surface of the first clamp 1 and the first surface of the second clamp 2 are opposite to each other up and down, and the product to be pressurized is located between the second surface of the first clamp 1 and the first surface of the second clamp 2. In addition, the first magnetic attraction portion 11 on the second surface of the first clamp 1 and the second magnetic attraction portion 21 on the first surface of the second clamp 2 are opposite to each other up and down, and a magnetic attraction force in the up and down direction is generated between the first magnetic attraction portion 11 and the second magnetic attraction portion 21, so that the first clamp 1 and the second clamp 2 can clamp and press the product to be pressurized up and down to press the product to be pressurized.

[0047] When the pressure holding clamp 100 is in the pressure holding state, the reason why the upward and downward magnetic attraction force is generated between the first magnetic attraction part 11 and the second magnetic attraction part 21 is that one of the first magnetic attraction part 11 and the second magnetic attraction part 21 is a magnet (the magnet can be an electromagnet or a permanent magnet), and the other of the first magnetic attraction part 11 and the second magnetic attraction part 21 is a magnet or a metal body that can be attracted by a magnet.

[0048] Optionally, see Figure 3 and Figure 4 In this embodiment, permanent magnets are disposed on both the second surface of the first fixture 1 and the first surface of the second fixture 2. The lower end of the permanent magnet on the first fixture 1 constitutes the first magnetic attraction portion 11, and the upper end of the permanent magnet on the second fixture 2 constitutes the second magnetic attraction portion 21. One of the lower end of the permanent magnet on the first fixture 1 and the upper end of the permanent magnet on the second fixture 2 is a positive pole, and the other is a negative pole. The following will take the example that the first magnetic attraction portion 11 is the positive pole of the permanent magnet on the first fixture 1, and the second magnetic attraction portion 21 is the negative pole of the permanent magnet on the second fixture 2.

[0049] The first magnetic attraction part 11 and the second magnetic attraction part 21 are usually arranged along the circumference of the first clamp 1, so that when the first clamp 1 and the second clamp 2 clamp the dispensing product, the force on the dispensing product will be more balanced. The first magnetic attraction part 11 is arranged along the circumference of the first clamp 1, and the first magnetic attraction part 11 can be arranged to extend along the circumference of the first clamp 1; or multiple first magnetic attraction parts 11 are arranged at intervals along the circumference of the first clamp 1.

[0050] Similarly, the second magnetic attraction portion 21 is arranged along the circumference of the first clamp 1 (the shapes of the first clamp 1 and the second clamp 2 are usually compatible, and the circumference of the first clamp 1 is also the circumference of the second clamp 2). The second magnetic attraction portion 21 can be extended along the circumference of the first clamp 1; or multiple second magnetic attraction portions 21 can be arranged at intervals along the circumference of the first clamp 1.

[0051] The first magnetic attraction part 11 and the second magnetic attraction part 21 can be both extended along the circumferential direction of the first clamp 1; the first magnetic attraction part 11 and the second magnetic attraction part 21 can also be both provided with multiple circumferential intervals along the first clamp 1; the first magnetic attraction part 11 and the second magnetic attraction part 21 can also be one of them extending along the circumferential direction of the first clamp 1, and the other is provided with multiple circumferential intervals along the first clamp 1.

[0052] Optionally, see Figure 3 and Figure 4 In this embodiment, a plurality of first magnetic attraction parts 11 are arranged at intervals along the circumference of the first fixture 1, and a plurality of second magnetic attraction parts 21 are arranged corresponding to the plurality of first magnetic attraction parts 11. The number of the first magnetic attraction parts 11 is equal to the number of the second magnetic attraction parts 21, and the plurality of first magnetic attraction parts 11 and the plurality of second magnetic attraction parts 21 are arranged one by one.

[0053] The specific location of the first magnetic attraction portion 11 on the first fixture 1 can be set according to actual conditions. Figure 3 In this embodiment, the first magnetic attraction portion 11 is located on the outside of the area of ​​the first clamp 1 used to abut the product to be pressurized. A first abutment area (not shown in the figure) is usually formed in the middle of the second surface of the first clamp 1. The first abutment area is used to abut and contact with the upper end of the product to be pressurized, and the first magnetic attraction portion 11 is located on the outside of the first abutment area.

[0054] Correspondingly, see Figure 4 In this embodiment, the second magnetic attraction portion 21 is located on the outside of the area of ​​the second clamp 2 used to abut against the product to be pressurized. A second abutment area (not shown in the figure) is usually formed in the middle of the first surface of the second clamp 2. The second abutment area is used to abut against the lower end of the product to be pressurized, and the second magnetic attraction portion 21 is located on the outside of the second abutment area.

[0055] The first abutting area and / or the second abutting area are usually provided with a limiting structure, which is used to limit the product to be pressurized. At least one of the second surface of the first clamp 1 and the first surface of the second clamp 2 is used to abut the area of ​​the product to be pressurized and is provided with a limiting groove 3, which is used to accommodate and limit the product to be pressurized.

[0056] Specifically, at least one of the first abutting area and the second abutting area is provided with a limiting groove 3 adapted to the shape of the product to be pressurized, and the limiting groove 3 constitutes a limiting structure. The limiting groove 3 adapted to the upper end shape of the product to be pressurized may be provided only in the first abutting area of ​​the first clamp 1, while the second abutting area of ​​the second clamp 2 is provided in a plane area; the limiting groove 3 adapted to the lower end shape of the product to be pressurized may be provided only in the second abutting area of ​​the second clamp 2, while the first abutting area of ​​the first clamp 1 is provided in a plane area; the limiting groove 3 adapted to the upper end shape of the product to be pressurized may be provided in the first abutting area of ​​the first clamp 1, while the limiting groove 3 adapted to the lower end shape of the product to be pressurized may be provided in the second abutting area of ​​the second clamp 2.

[0057] The second surface of the first clamp 1 and the first surface of the second clamp 2 are also respectively provided with a first electromagnet 12 and a first magnet 22. When the pressure holding clamp 100 is in the pressure holding state, the first electromagnet 12 and the first magnet 22 are opposite to each other up and down, wherein the first magnet 22 can be a permanent magnet or an electromagnet.

[0058] Optionally, in this embodiment, the first magnet 22 is a permanent magnet, so there is no need to configure an external power supply for the first magnet 22 separately. The following will be introduced as an example in which the first magnet 22 is a permanent magnet and the upper end of the first magnet 22 (that is, the end of the first magnet 22 facing the first electromagnet 12) is the negative pole of the first magnet 22.

[0059] When the first electromagnet 12 is not energized, the first electromagnet 12 is non-magnetic; when the first electromagnet 12 is energized, the first electromagnet 12 is magnetic, and by changing the direction of the current passing through the first electromagnet 12, the magnetism of the lower end of the first electromagnet 12 (i.e., the end of the first electromagnet 12 facing the first magnet 22) can be changed. It is defined below that when the current passes through the first electromagnet 12 in the forward direction, the lower end of the first electromagnet 12 is the positive pole, and when the current passes through the first electromagnet 12 in the reverse direction, the lower end of the first electromagnet 12 is the negative pole.

[0060] When the pressure-holding clamp 100 is in the pressure-holding state, the first electromagnet 12 can be de-energized, in which case the first electromagnet 12 has no magnetism; the first electromagnet 12 can also be energized, and the current passes through the first electromagnet 12 in the positive direction, in which case the lower end of the first electromagnet 12 is the positive pole, and the first electromagnet 12 and the first magnet 22 are magnetically attracted to each other.

[0061] After the dispensing product is guaranteed to be completed, when the pressure holding needs to be removed, the first electromagnet 12 is energized so that the current passes through the first electromagnet 12 in the reverse direction. At this time, the pressure holding fixture 100 is in a pressure-removing state, and the lower end of the first electromagnet 12 is a negative pole. The first electromagnet 12 and the first magnet 22 magnetically repel each other, and the repulsive force between the first electromagnet 12 and the first magnet 22 is not less than the adsorption force between the first magnetic attraction part 11 and the second magnetic attraction part 21, so that the first fixture 1 can be removed and the dispensing product after pressure holding can be taken out.

[0062] The first electromagnet 12 and the first magnet 22 are usually arranged along the circumference of the first fixture 1. The first electromagnet 12 is arranged along the circumference of the first fixture 1. The first electromagnet 12 can be arranged to extend along the circumference of the first fixture 1, or a plurality of first electromagnets 12 can be arranged at intervals along the circumference of the first fixture 1. Similarly, the first magnet 22 is arranged along the circumference of the first fixture 1. The first magnet 22 can be arranged to extend along the circumference of the first fixture 1, or a plurality of first magnets 22 can be arranged at intervals along the circumference of the first fixture 1.

[0063] The first electromagnet 12 and the first magnet 22 may be both extended along the circumferential direction of the first fixture 1; the first electromagnet 12 and the first magnet 22 may be both provided in plurality at intervals along the circumferential direction of the first fixture 1; the first electromagnet 12 and the first magnet 22 may be one of which is extended along the circumferential direction of the first fixture 1, and the other of which is provided in plurality at intervals along the circumferential direction of the first fixture 1.

[0064] Optionally, see Figure 3 and Figure 4 In this embodiment, a plurality of first electromagnets 12 are arranged at intervals along the circumference of the first fixture 1, and a plurality of first magnets 22 are arranged corresponding to the plurality of first electromagnets 12. The number of the first electromagnets 12 is the same as the number of the first magnets 22, and the plurality of first electromagnets 12 corresponds to the plurality of first magnets 22 one by one. When the pressure-maintaining fixture 100 is in a depressurized state, the repulsive force formed between the plurality of first electromagnets 12 and the plurality of first magnets 22 is not less than the adsorption force formed between the plurality of first magnetic attraction portions 11 and the plurality of second magnetic attraction portions 21.

[0065] The specific location of the first electromagnet 12 on the first fixture 1 can be set according to actual conditions. Figure 3 In this embodiment, the first electromagnet 12 is located outside the first contact area of ​​the first clamp 1. Figure 4 In this embodiment, the first magnet 22 is located outside the second abutting area of ​​the second clamp 2 .

[0066] Optionally, see Figure 3In this embodiment, a plurality of first magnetic attraction parts 11 and a plurality of first electromagnets 12 are arranged on a loop extending along the circumference of the first clamp 1. For example, the first clamp 1 is arranged in a square plate shape, a first electromagnet 12 is arranged at each corner of the first clamp 1, and a first magnetic attraction part 11 is arranged between any two adjacent first electromagnets 12. Specifically, four first electromagnets 12 are arranged, and the four first electromagnets 12 are respectively distributed at the four corners of the first clamp 1, two first magnetic attraction parts 11 are arranged corresponding to each short side of the first clamp 1, and three first magnetic attraction parts 11 are arranged corresponding to each long side of the first clamp 1, so that a total of ten first magnetic attraction parts 11 are arranged.

[0067] Correspondingly, see Figure 4 In this embodiment, a plurality of second magnetic attraction parts 21 and a plurality of first magnets 22 are arranged on a loop extending along the circumference of the second clamp 2. For example, the second clamp 2 is arranged in a square plate shape, a first magnet 22 is arranged at each corner of the second clamp 2, and a second magnetic attraction part 21 is arranged between any two adjacent first magnets 22. Specifically, four first magnets 22 are arranged, and the four first magnets 22 are respectively distributed at the four corners of the second clamp 2, two second magnetic attraction parts 21 are arranged corresponding to each short side of the second clamp 2, and three second magnetic attraction parts 21 are arranged corresponding to each long side of the second clamp 2, and a total of ten second magnetic attraction parts 21 are arranged.

[0068] When removing the pressure holding, the first electromagnet 12 needs to be energized. The pressure holding fixture 100 may have its own power supply and control circuit for powering the first electromagnet 12; or a first conductive contact 121 may be provided on the first fixture 1, and the first electromagnet 12 is connected to an external power supply through the first conductive contact 121, so as to power the first electromagnet 12 through the external power supply.

[0069] The specific location of the first conductive contact 121 on the first fixture 1 may not be particularly limited. Figure 2 and Figure 3 In this embodiment, a first conductive contact 121 electrically connected to the first electromagnet 12 is provided on the first surface of the first fixture 1. When the pressure-maintaining fixture 100 is in the pressure-maintaining state, the first conductive contact 121 is exposed upward, so that an external power source can be connected to the first conductive contact 121.

[0070] The pressure-maintaining fixture 100 can be used in conjunction with a robot gripper (not shown in the figure) to achieve automated pressure-maintaining operation of the dispensing product, wherein the robot gripper can be an existing commonly used robot gripper.

[0071] The machine gripper can be used to clamp the handling fixture, and the machine gripper is provided with a power supply and a control circuit. The machine gripper is provided with a conductive part (the conductive part can be a conductive needle, etc.) corresponding to the first conductive contact 121, and the conductive part is electrically connected to the power supply and the control circuit. When the dispensing product is pressure-maintained, the dispensing product is placed on the second fixture 2, and the machine gripper clamps the first fixture 1. At this time, the control circuit on the machine gripper is disconnected, and the first electromagnet 12 on the first fixture 1 is not powered. The machine gripper aligns the first fixture 1 and presses it on the second fixture 2. When removing the pressure maintenance, the first fixture 1 is clamped by the machine gripper. At this time, the conductive part on the machine gripper contacts the first conductive contact 121 on the first fixture 1, the control circuit on the machine gripper is turned on, and the first electromagnet 12 is powered. The first electromagnet 12 generates a reverse thrust to offset the adsorption force between the first fixture 1 and the second fixture 2. After the machine gripper removes the first fixture 1, the dispensing product that has been pressure-maintained is taken out. In this way, no manual operation is required for pressing and disassembling the first clamp 1, and it can be done through a machine gripper, which effectively meets the needs of automated large-scale production and reduces the influence of human factors. The pressure-maintaining clamp 100 can achieve efficient automation of pressure-maintaining operations.

[0072] Optionally, see Figures 1 to 3 In this embodiment, the first surface and the second surface of the first clamp 1 are the peripheral side surfaces of the first clamp 1, and the peripheral side surfaces of the first clamp 1 are provided with a first convex edge 15 extending along the circumference of the first clamp 1. The first convex edge 15 is provided on the peripheral side surface of the first clamp 1, so that the first clamp 1 can be clamped and carried by the first convex edge 15.

[0073] Likewise, see Figure 1 , Figure 4 and Figure 5 In this embodiment, the first surface and the second surface of the second clamp 2 are the peripheral side surfaces of the second clamp 2, and the peripheral side surfaces of the second clamp 2 are convexly provided with a second convex edge 25 extending along the circumference of the second clamp 2. The second convex edge 25 is provided on the peripheral side surface of the second clamp 2, so that the second clamp 2 can be easily clamped and carried at the second convex edge 25.

[0074] Optionally, see Figure 1 In this embodiment, the first clamp 1 (see Figure 2 and Figure 3 ) and the second fixture 2 (see Figure 4 and Figure 5 ) adopts a uniform appearance design. For example, in this embodiment, the first clamp 1 and the second clamp 2 are both configured as square plates.

[0075] Optionally, see Figure 1 , Figure 2 and Figure 4In this embodiment, a first fool-proofing structure 16 is provided on the first fixture 1 , and a second fool-proofing structure 26 is provided on the second fixture 2 corresponding to the first fool-proofing structure 16 .

[0076] Specifically, when the first clamp 1 is pressed onto the second clamp 2, the first anti-foolproof structure 16 and the second anti-foolproof structure 26 facilitate the alignment of the first clamp 1 and the second clamp 2, so that the first magnetic attraction part 11 and the first electromagnet 12 on the first clamp 1 are aligned with the second magnetic attraction part 21 and the first magnet 22 on the second clamp 2 respectively.

[0077] The specific arrangement of the first foolproof structure 16 and the second foolproof structure 26 may not be particularly limited. For example, the first foolproof structure 16 and the second foolproof structure 26 may be notches, corners, or concave-convex matching structures. Figure 1 , Figure 2 and Figure 4 In this embodiment, the first fool-proof structure 16 is a notch provided on the first flange 15, and the second fool-proof structure 26 is a notch provided on the second flange 25. When the first fixture 1 is aligned with the second fixture 2, that is, when the pressure-maintaining fixture 100 is in the pressure-maintaining state, the notch on the first flange 15 and the notch on the second flange 25 are directly opposite to each other.

[0078] Optionally, see Figure 1 , Figure 3 and Figure 4 In this embodiment, a first positioning protrusion 27 is provided on one of the second surface of the first clamp 1 and the first surface of the second clamp 2, and a first positioning groove 17 is provided on the other corresponding to the first positioning protrusion 27; when the pressure-maintaining clamp 100 is in the pressure-maintaining state, the first positioning protrusion 27 extends into the first positioning groove 17.

[0079] Specifically, the first positioning groove 17 and the first positioning protrusion 27 can realize the installation and positioning between the first clamp 1 and the second clamp 2. In addition, a plurality of first positioning grooves 17 and first positioning protrusions 27 are usually provided at intervals along the circumference of the first clamp 1.

[0080] The first positioning groove 17 may be provided on the first fixture 1, and the first positioning protrusion 27 may be provided on the second fixture 2; or the first positioning groove 17 may be provided on the second fixture 2, and the first positioning protrusion 27 may be provided on the first fixture 1. The first positioning groove 17 and the first positioning protrusion 27 are usually located outside the first contact area of ​​the first fixture 1 and the second contact area of ​​the second fixture 2.

[0081] Optionally, see Figure 1 , Figure 3 and Figure 4In this embodiment, the first positioning groove 17 is arranged on the first clamp 1, and the first positioning groove 17 is located at the connection between the second surface and the peripheral side surface of the first clamp 1. Correspondingly, the first positioning protrusion 27 is arranged on the second clamp 2, and the first positioning protrusion 27 is located at the connection between the first surface and the peripheral side surface of the second clamp 2.

[0082] The present invention arranges the first magnetic attraction part 11 and the second magnetic attraction part 21 on the first clamp 1 and the second clamp 2 correspondingly, and after the product to be pressurized and one clamp are placed in the other clamp in sequence, the first clamp 1 and the second clamp 2 can automatically clamp and press the product to be pressurized under the action of the adsorption force between the first magnetic attraction part 11 and the second magnetic attraction part 21; after the pressure holding is completed and the first electromagnet 12 is energized, the clamp on the pressure-holding product can be removed under the action of the repulsive force between the first electromagnet 12 and the first magnet 22, and the pressure-holding product can be taken out. The pressure-holding clamp 100 can be well used in automated machinery to realize automation during pressing and disassembly, thereby effectively meeting large-scale automated production, improving product assembly efficiency, and reducing the influence of human factors.

[0083] The existing pressure-holding fixtures can only be stacked in one layer, that is, multiple pressure-holding fixtures cannot be stacked, so there is a problem of low space utilization. Figure 1 , Figure 2 and Figure 5 In this embodiment, a third magnetic attraction portion 13 and a second magnet 14 are provided on the first surface of the first clamp 1, and a fourth magnetic attraction portion 23 and a second electromagnet 24 are provided on the second surface of the second clamp 2 corresponding to the third magnetic attraction portion 13 and the second magnet 14 respectively; the two pressure-maintaining clamps 100 can be superimposed on the first clamp 1 and the second clamp 2, and when the second clamp 2 of another pressure-maintaining clamp 100 is superimposed on the first clamp 1, the first surface of the first clamp 1 is close to the second surface of the second clamp 2 superimposed thereon, the third magnetic attraction portion 13 and the fourth magnetic attraction portion 23 are magnetically attracted to each other, and if the second electromagnet 24 is energized, the second electromagnet 24 and the second magnet 14 are magnetically repelled, and the first clamp 1 and the second clamp 2 superimposed thereon can be separated.

[0084] Specifically, multiple pressure-maintaining clamps 100 can be stacked in the height direction (i.e., up and down) using "first clamp 1 + second clamp 2 + first clamp 1 + second clamp 2...", and two adjacent pressure-maintaining clamps 100 can be tightly clamped by magnetic attraction when stacked. The multiple pressure-maintaining clamps 100 are firm and reliable, which improves space utilization.

[0085] The following will take the superposition of two pressure-maintaining clamps 100 as an example for introduction. The two pressure-maintaining clamps 100 are respectively the first pressure-maintaining clamp and the second pressure-maintaining clamp, and the first pressure-maintaining clamp is superimposed on the second pressure-maintaining clamp. When the first pressure-maintaining clamp and the second pressure-maintaining clamp are both in the pressure-maintaining state, the machine gripper can clamp the first pressure-maintaining clamp to superimpose the first pressure-maintaining clamp on the second pressure-maintaining clamp. When the first pressure-maintaining clamp is superimposed on the second pressure-maintaining clamp, the second clamp 2 in the first pressure-maintaining clamp is superimposed on the first clamp 1 in the second pressure-maintaining clamp, the second surface of the second clamp 2 in the first pressure-maintaining clamp is opposite to the first surface of the first clamp 1 in the second pressure-maintaining clamp, and the fourth magnetic attraction portion 23 on the second clamp 2 in the first pressure-maintaining clamp is aligned with the third magnetic attraction portion 13 on the first clamp 1 in the second pressure-maintaining clamp to generate a magnetic adsorption force, so that the first pressure-maintaining clamp and the second pressure-maintaining clamp can be firmly superimposed together.

[0086] When removing the pressure holding, firstly disassemble the first clamp 1 in the first pressure holding clamp by the machine gripper, and take out the glue dispensing product that has been pressure-held in the first pressure holding clamp. Then, the second clamp 2 in the first pressure-maintaining clamp is removed by the machine gripper. Since the second clamp 2 in the first pressure-maintaining clamp is superimposed on the first clamp 1 in the second pressure-maintaining clamp, the second electromagnet 24 on the second clamp 2 in the first pressure-maintaining clamp and the second magnet 14 on the first clamp 1 in the second pressure-maintaining clamp are aligned up and down. When the machine gripper clamps the second clamp 2 in the first pressure-maintaining clamp, the conductive part on the machine gripper contacts the second electromagnet 24 on the second clamp 2 in the first pressure-maintaining clamp, the control circuit on the machine gripper is turned on, the second electromagnet 24 is energized, and the second electromagnet 24 on the second clamp 2 in the first pressure-maintaining clamp and the second magnet 14 on the first clamp 1 in the second pressure-maintaining clamp magnetically repel each other, generating a reverse thrust. This reverse thrust offsets the suction force between the second clamp 2 in the first pressure-maintaining clamp and the first clamp 1 in the second pressure-maintaining clamp, and the machine gripper can remove the second clamp 2 in the first pressure-maintaining clamp. Finally, the machine gripper can continue to disassemble the first fixture 1 in the second pressure-maintaining fixture and take out the glue-dispensing product that has been pressure-maintained in the second pressure-maintaining fixture.

[0087] The third magnetic attraction part 13 and the first magnetic attraction part 11 are respectively arranged on the first surface and the second surface of the first clamp 1. It can be that magnets are arranged on both the first surface and the second surface of the first clamp 1, the magnet on the first surface of the first clamp 1 forms the third magnetic attraction part 13, and the magnet on the second surface of the first clamp 1 forms the first magnetic attraction part 11, that is, the two magnets form a third magnetic attraction part 13 and a first magnetic attraction part 11 respectively; it can also be that the first magnetic attraction part 11 and the third magnetic attraction part 13 are formed at both ends of a magnet respectively.

[0088] Optionally, see Figure 2 and Figure 3In the present embodiment, the first fixture 1 is provided with a first mounting hole (not shown in the figure) corresponding to the first magnetic attraction portion 11, the first mounting hole passes through the first surface and the second surface of the first fixture 1, a first magnetic body is provided at the first mounting hole, and an end of the first magnetic body close to the second surface of the first fixture 1 forms the first magnetic attraction portion 11, and an end of the first magnetic body close to the first surface of the first fixture 1 forms the third magnetic attraction portion 13.

[0089] Specifically, the number of the first magnetic attraction parts 11 is the same as the number of the third magnetic attraction parts 13, and the first magnetic attraction parts 11 correspond to the third magnetic attraction parts 13 one by one. The first fixture 1 is provided with the same number of first magnetic bodies as the first magnetic attraction parts 11, and the upper end and the lower end of each first magnetic body form a third magnetic attraction part 13 and a first magnetic attraction part 11 respectively.

[0090] Optionally, in this embodiment, the first magnetic body is a permanent magnet, and the first magnetic portion 11 and the third magnetic portion 13 are respectively the positive pole and the negative pole of the first magnetic body.

[0091] Similarly, the second magnetic attraction part 21 and the fourth magnetic attraction part 22 are respectively provided on the first surface and the second surface of the second clamp 2. It can be that magnets are provided on both the first surface and the second surface of the second clamp 2, the magnet on the first surface of the second clamp 2 forms the second magnetic attraction part 21, and the magnet on the second surface of the second clamp 2 forms the fourth magnetic attraction part 22, that is, the two magnets form a second magnetic attraction part 21 and a fourth magnetic attraction part 22 respectively; it can also be that the two ends of a magnet form the fourth magnetic attraction part 22 and the second magnetic attraction part 21 respectively.

[0092] Optionally, see Figure 4 and Figure 5 In the present embodiment, the second fixture 2 is provided with a second mounting hole (not shown in the figure) corresponding to the second magnetic attraction portion 21, the second mounting hole passes through the first surface and the second surface of the second fixture 2, a second magnetic body is provided at the second mounting hole, and the second magnetic body is formed at one end of the first surface of the second fixture 2 to form the second magnetic attraction portion 21, and the second magnetic body is formed at one end of the second surface of the second fixture 2 to form a fourth magnetic attraction portion 23.

[0093] Specifically, the number of the fourth magnetic attraction parts 22 is the same as that of the second magnetic attraction parts 21, and the fourth magnetic attraction parts 22 correspond to the second magnetic attraction parts 21 one by one. The second fixture 2 is provided with the same number of second magnetic bodies as the fourth magnetic attraction parts 22, and the upper end and the lower end of each second magnetic body form a second magnetic attraction part 21 and a fourth magnetic attraction part 22 respectively.

[0094] Optionally, in this embodiment, the second magnetic body is a permanent magnet, and the fourth magnetic portion 22 and the second magnetic portion 21 are respectively the positive pole and the negative pole of the second magnetic body.

[0095] The first surface of the first clamp 1 and the second surface of the second clamp 2 are respectively provided with a second magnet 14 and a second electromagnet 24. The second magnet 14 can be a permanent magnet or an electromagnet. Optionally, in this embodiment, the second magnet 14 is a permanent magnet, so there is no need to configure an external power supply for the second magnet 14 separately.

[0096] The first surface and the second surface of the first fixture 1 are respectively provided with a second magnet 14 and a first electromagnet 12. The second magnet 14 and the first electromagnet 12 may be staggered in vertical arrangement; the second magnet 14 and the first electromagnet 12 may also be arranged opposite to each other in vertical arrangement. Figure 2 and Figure 3 In this embodiment, the number of the first electromagnets 12 and the second magnets 14 is the same, the first electromagnets 12 and the second magnets 14 are arranged one by one, and each first electromagnet 12 is opposite to the corresponding second magnet 14 up and down.

[0097] Similarly, the first surface and the second surface of the second fixture 2 are respectively provided with a first magnet 22 and a second electromagnet 24. The first magnet 22 and the second electromagnet 24 can be staggered up and down; the first magnet 22 and the second electromagnet 24 can also be arranged opposite to each other up and down. Figure 4 and Figure 5 In this embodiment, the number of the first magnets 22 and the second electromagnets 24 is the same, the first magnets 22 and the second electromagnets 24 are arranged in a one-to-one correspondence, and each second electromagnet 24 is vertically opposite to the corresponding first magnet 22.

[0098] When the second fixture 2 superimposed on the first fixture 1 is removed, the second conductive contact 241 on the second fixture 2 contacts the conductive part on the machine gripper to energize the second electromagnet 24 on the second fixture 2. The specific location of the second conductive contact 241 on the second fixture 2 may not be specifically limited. Figure 4 and Figure 5 In this embodiment, a second conductive contact 241 electrically connected to the second electromagnet 24 is provided on the first surface of the second clamp 2, so that when the second clamp 2 superimposed on the first clamp 1 is disassembled, the second conductive contact 241 is exposed upward, which facilitates the conductive part on the machine gripper to connect to the second conductive contact 241.

[0099] For further information, see Figure 2 and Figure 4In this embodiment, when the pressure-holding clamp 100 is in the pressure-holding state, the first conductive contact 121 and the second conductive contact 241 are opposite to each other up and down. In this way, when multiple superimposed pressure-holding clamps 100 are disassembled, after the machine gripper adjusts the horizontal position, the first conductive contact 121 and the second conductive contact 241 on each pressure-holding clamp 100 are located directly below the conductive contacts on the mechanical gripper.

[0100] Optionally, see Figure 1 , Figure 2 and Figure 5 In this embodiment, a second positioning protrusion 18 is provided on one of the first surface of the first clamp 1 and the second surface of the second clamp 2, and a second positioning groove 28 is provided on the other corresponding to the second positioning protrusion 18; when a second clamp 2 having another pressure-maintaining clamp 100 is superimposed on the first clamp 1, the second positioning protrusion 18 extends into the second positioning groove 28.

[0101] Specifically, when multiple pressure-maintaining fixtures 100 are stacked, two adjacent pressure-maintaining fixtures 100 can be installed and positioned by the cooperation between the second positioning protrusion 18 and the second positioning groove 28. In addition, a plurality of second positioning protrusions 18 and second positioning grooves 28 are usually provided at intervals along the circumference of the first fixture 1.

[0102] The second positioning groove 28 may be provided on the first fixture 1 , and the second positioning protrusion 18 may be provided on the second fixture 2 ; or the second positioning groove 28 may be provided on the second fixture 2 , and the second positioning protrusion 18 may be provided on the first fixture 1 .

[0103] Optionally, see Figure 1 , Figure 2 and Figure 3 In this embodiment, the first positioning grooves 17 and the second positioning protrusions 18 are both arranged on the first fixture 1, the number of the first positioning grooves 17 and the second positioning protrusions 18 are equal, and the first positioning grooves 17 and the second positioning protrusions 18 correspond one to one, and each first positioning groove 17 is opposite to the corresponding second positioning protrusion 18 up and down.

[0104] Correspondingly, see Figure 1 , Figure 4 and Figure 5 In this embodiment, the first positioning protrusions 27 and the second positioning grooves 28 are both arranged on the second clamp 2, the number of the first positioning protrusions 27 and the second positioning grooves 28 are equal, and the first positioning protrusions 27 and the second positioning grooves 28 correspond one to one, and each first positioning protrusion 27 is opposite to the corresponding second positioning groove 28 up and down.

[0105] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pressure-maintaining fixture, characterized in that: It comprises a first clamp and a second clamp for clamping and pressing the product to be pressurized; The first clamp and the second clamp each have a first surface and a second surface opposite to each other in a clamping direction, a first magnetic attraction portion and a first electromagnet are arranged on the second surface of the first clamp, and a second magnetic attraction portion and a first magnet are arranged on the first surface of the second clamp corresponding to the first magnetic attraction portion and the first electromagnet respectively; Wherein, when the pressure-maintaining fixture is in the pressure-maintaining state, the second surface of the first fixture is close to the first surface of the second fixture, and the first magnetic attraction portion is magnetically attracted to the second magnetic attraction portion; When the pressure-maintaining fixture is in a depressurized state, the first electromagnet is energized, the first electromagnet and the first magnet magnetically repel each other, and the first fixture and the second fixture can be separated; A first conductive contact electrically connected to the first electromagnet is disposed on the first surface of the first clamp, and the first conductive contact is used to contact the conductive part on the machine gripper when the first clamp is clamped by the machine gripper to energize the first electromagnet.

2. The pressure-maintaining fixture according to claim 1, characterized in that: A plurality of the first magnetic attraction parts are arranged at intervals along the circumference of the first clamp, and a plurality of the second magnetic attraction parts are arranged corresponding to the plurality of the first magnetic attraction parts; and / or, A plurality of the first electromagnets are arranged at intervals along the circumferential direction of the first fixture, and a plurality of the first magnets are arranged corresponding to the plurality of the first electromagnets.

3. The pressure-maintaining fixture according to claim 1, characterized in that: The first magnet is a permanent magnet.

4. The pressure-maintaining fixture according to any one of claims 1 to 3, characterized in that: A third magnetic attraction portion and a second magnet are disposed on the first surface of the first clamp, and a fourth magnetic attraction portion and a second electromagnet are disposed on the second surface of the second clamp corresponding to the third magnetic attraction portion and the second magnet respectively; The two pressure-maintaining clamps can be stacked through the first clamp and the second clamp. When the second clamp of another pressure-maintaining clamp is stacked on the first clamp, the first surface of the first clamp is close to the second surface of the second clamp stacked thereon, the third magnetic attraction part is magnetically attracted to the fourth magnetic attraction part, and if the second electromagnet is energized, the second electromagnet and the second magnet are magnetically repelled, and the first clamp and the second clamp stacked thereon can be separated.

5. The pressure-maintaining fixture according to claim 4, characterized in that: The first fixture is provided with a first mounting hole corresponding to the first magnetic attraction portion, the first mounting hole passes through the first surface and the second surface of the first fixture, a first magnetic body is provided at the first mounting hole, an end of the first magnetic body close to the second surface of the first fixture forms the first magnetic attraction portion, and an end of the first magnetic body close to the first surface of the first fixture forms the third magnetic attraction portion; and / or, The second clamp is provided with a second mounting hole corresponding to the second magnetic attraction part, and the second mounting hole passes through the first surface and the second surface of the second clamp. A second magnetic body is provided at the second mounting hole, and the second magnetic body is formed at one end close to the first surface of the second clamp to form the second magnetic attraction part, and the second magnetic body is formed at one end close to the second surface of the second clamp to form the fourth magnetic attraction part.

6. The pressure-maintaining fixture according to claim 5, characterized in that: The first magnetic body is a permanent magnet.

7. The pressure-maintaining fixture according to claim 5, characterized in that: The second magnetic body is a permanent magnet.

8. The pressure-maintaining fixture according to claim 4, characterized in that: The second magnet is a permanent magnet.

9. The pressure-maintaining fixture according to claim 4, characterized in that: A second conductive contact electrically connected to the second electromagnet is disposed on the first surface of the second fixture.

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