Pressure maintaining device

Abstract

The invention belongs to the technical field of pressure maintaining, and discloses a pressure maintaining device which comprises a carrying table, a pressure maintaining module, a mounting frame and a driving mechanism, the carrying table is configured to carry a product, the pressure maintaining module is slidably connected to the mounting frame in the direction forming an included angle with the vertical direction, the included angle is an acute angle, and the pressure maintaining module comprises a pressure head; the pressing head is provided with a first abutting portion and a second abutting portion, the driving mechanism is configured to drive the pressure maintaining module to slide and enable the first abutting portion and the second abutting portion to jointly abut against a pressure bearing portion of a product, the first abutting portion can exert first pressure on the product in the horizontal direction, and the second abutting portion can exert second pressure on the product in the horizontal direction. And the second pressing part can apply second pressure to the product along the vertical direction so as to simultaneously apply pressure to a horizontal part and a vertical part on the adhesive layer, so that all parts of the adhesive layer are subjected to pressure maintaining, and the adhesive layer can be stably adhered to the shell. The pressure maintaining device can replace manual work to conduct pressure maintaining operation, and the working efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of pressure maintaining technology, and in particular to a pressure maintaining device. Background Art

[0002] For products provided with electronic display screens, it is necessary to assemble the electronic display screens by bonding during the production process, and before bonding the electronic display screens, it is necessary to first adhere a glue layer to the outer shell of the product, and after bonding the glue layer to the outer shell, it is necessary to apply pressure to the glue layer and maintain the pressure for a preset time, so that the glue layer is firmly bonded to the outer shell, thereby ensuring that the subsequent electronic display screen can be firmly bonded to the outer shell. However, for some products, the portion on the outer shell used for bonding the glue layer is stepped, but the pressure-maintaining device in the prior art can generally only apply pressure to the glue layer in one direction, and therefore cannot meet the needs of products with stepped portions for bonding the glue layer. From the above, for products with stepped portions for bonding the glue layer, the prior art generally applies pressure to the glue layer manually, but the efficiency of manual pressure maintenance is low. Summary of the invention

[0003] The object of the present invention is to provide a pressure maintaining device to solve the problem of low working efficiency of manual pressure maintaining.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The pressure holding device comprises:

[0006] a carrier configured to carry a product;

[0007] A pressure-maintaining module and a mounting frame, wherein the pressure-maintaining module is slidably connected to the mounting frame along a direction that is set at an angle to the vertical direction, and the angle is an acute angle, and the pressure-maintaining module includes a pressure head, and the pressure head is provided with a first pressing portion and a second pressing portion; and

[0008] The driving mechanism is configured to drive the pressure-maintaining module to slide, and to make the first pressing part and the second pressing part jointly press against the pressure-bearing part of the product, the first pressing part can apply a first pressure to the product in a horizontal direction, and the second pressing part can apply a second pressure to the product in a vertical direction.

[0009] Preferably, the pressure-maintaining device comprises two pressure-maintaining module groups, the two pressure-maintaining module groups are symmetrically arranged, and the symmetry plane is a vertical plane, and the sliding tracks of the two pressure-maintaining module groups are symmetrical about the symmetry plane.

[0010] Preferably, the driving mechanism is configured to drive the two pressure-maintaining dies to move synchronously.

[0011] Preferably, two first slide rails are provided on the mounting frame, and the two first slide rails are symmetrically arranged about the symmetry plane. The two pressure-maintaining modules are respectively slidably connected to the two first slide rails. The pressure-maintaining module also includes a slider, which is slidably connected to the first slide rail. The pressure head is fixedly connected with a slide rod. For the corresponding pressure-maintaining modules and the first slide rails, the axial direction of the slide rod is parallel to the extension direction of the first slide rail. The slider is sleeved on the outer periphery of the slide rod, and a spring is sleeved on the outer periphery of the slide rod. The spring is connected between the slider and the pressure head.

[0012] Preferably, the pressure head is fixedly connected to at least two of the sliding rods.

[0013] Preferably, a limiting portion is provided at one end of the slide bar away from the pressure head, and the limiting portion can abut against a side of the slide bar away from the pressure head.

[0014] Preferably, the slider includes a first block, a second block and a third block, the first block is slidably connected to the first slide rail, the second block is fixedly connected between the first block and the third block, the pressure head is installed on the third block, one of the first block and the second block is provided with a first strip hole, the first block and the second block are fixedly connected by a first bolt passing through the first strip hole, the first strip hole extends along a first direction perpendicular to the extension direction of the first slide rail, one of the second block and the third block is provided with a second strip hole, the second block and the third block are fixedly connected by a second bolt passing through the second strip hole, the second strip hole extends along a second direction perpendicular to the extension direction of the first slide rail, and the first direction is perpendicular to the second direction.

[0015] Preferably, the driving mechanism includes a driving member and a connecting rod, the connecting rod extends in a horizontal direction, rollers are provided at both ends of the connecting rod, the two rollers are symmetrically arranged about the symmetry plane, a sliding groove extending in a horizontal direction is provided on the slider, the two rollers are respectively arranged in the two sliding grooves, and the driving member is configured to drive the connecting rod to move in a vertical direction.

[0016] Preferably, the driving mechanism further comprises a second slide rail, the second slide rail extends in a vertical direction, a center line of the second slide rail is located in the symmetry plane, and the connecting rod is slidably connected to the second slide rail.

[0017] Preferably, the driving member is mounted on the mounting frame via a mounting plate, and one of the mounting plate and the mounting frame is provided with a third strip hole, and the mounting plate and the mounting frame are fixedly connected by a third bolt passing through the third strip hole, and the third strip hole extends in a vertical direction.

[0018] Beneficial effects of the present invention:

[0019] The pressure-maintaining device in the present invention can apply pressure to the product in both the horizontal and vertical directions. Therefore, for products with stepped parts for bonding the adhesive layer, the pressure-maintaining device in the present invention can satisfy the requirement of applying pressure to both the horizontal and vertical parts of the adhesive layer at the same time, thereby maintaining pressure on all parts of the adhesive layer to ensure that the adhesive layer can be firmly bonded to the shell. The pressure-maintaining device in the present invention can replace manual pressure-maintaining operations, and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a product in an embodiment of the present invention;

[0021] Figure 2 is a front view of a pressure maintaining device in an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a pressure-maintaining device in an embodiment of the present invention;

[0023] Figure 4 It is one of the structural schematic diagrams of the pressure-maintaining module in the embodiment of the present invention;

[0024] Figure 5 This is the second structural schematic diagram of the pressure-maintaining module in the embodiment of the present invention;

[0025] Figure 6 is an exploded view of the pressure-maintaining module in an embodiment of the present invention.

[0026] In the figure:

[0027] 100, product; 110, adhesive layer; 111, horizontal pressure-bearing part; 1111, horizontal pressure-bearing surface; 112, vertical pressure-bearing part; 1121, first vertical pressure-bearing surface; 1122, second vertical pressure-bearing surface; 120, housing; 121, first bonding part; 122, second bonding part; 1, carrier; 2, pressure-maintaining module; 21, pressure head; 211, first pressing part; 2111, first vertical pressing surface; 2112, second vertical pressing surface; 212, first Two pressing parts; 22, slider; 221, first block; 222, second block; 2221, first strip hole; 2222, second strip hole; 223, third block; 224, slide groove; 23, slide rod; 231, spring; 232, limit part; 3, mounting frame; 31, first slide rail; 4, driving mechanism; 41, driving member; 42, connecting rod; 421, roller; 43, second slide rail; 44, mounting plate; 441, third strip hole; 5, symmetry surface. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] See also Figures 2 to 6 , and combined with Figure 1The present embodiment provides a pressure-maintaining device, which includes a carrier 1, a pressure-maintaining module 2, a mounting frame 3 and a driving mechanism 4. The carrier 1 is configured to carry a product 100. The product 100 carried on the carrier 1 is a shell 120 bonded with an adhesive layer 110. The pressure-maintaining module 2 is slidably connected to the mounting frame 3 along a direction set at an angle to the vertical direction, and the angle is an acute angle. The pressure-maintaining module 2 includes a pressure head 21, and the pressure head 21 is provided with a first pressing portion 211 and a second pressing portion 212. The driving mechanism 4 is configured to drive the pressure-maintaining module 2 to slide, and make the first pressing portion 211 and the second pressing portion 212 press together to the pressure-bearing portion of the product 100, wherein the first pressing portion 211 can apply a first pressure to the product 100 along a horizontal direction, and the second pressing portion 212 can apply a second pressure to the product 100 along a vertical direction.

[0033] As described above, since the pressure-maintaining device in this embodiment can apply pressure to the product 100 in both the horizontal direction and the vertical direction, for the product 100 whose part for bonding the adhesive layer 110 is in a stepped shape, the pressure-maintaining device in this embodiment can satisfy the requirement of applying pressure to the horizontal part and the vertical part of the adhesive layer 110 at the same time, thereby maintaining pressure on all parts of the adhesive layer 110 to ensure that the adhesive layer 110 can be firmly bonded to the housing 120. The pressure-maintaining device in this embodiment can replace manual pressure-maintaining operations, and has high work efficiency.

[0034] Specifically, exemplarily, in the present embodiment, the portion of the product 100 for bonding the adhesive layer 110 is stepped, and the adhesive layer 110 bonded to the portion is also stepped. Specifically, the adhesive layer 110 forms a pressure-bearing portion composed of a horizontal pressure-bearing portion 111 and a vertical pressure-bearing portion 112. The horizontal pressure-bearing portion 111 forms a horizontal pressure-bearing surface 1111 on the side of the adhesive layer 110 away from the outer shell 120, and the vertical pressure-bearing portion 112 forms a vertical pressure-bearing surface on the side of the adhesive layer 110 away from the outer shell 120. In the present embodiment, there are two vertical pressure-bearing surfaces, which are a first vertical pressure-bearing surface 1121 and a second vertical pressure-bearing surface 1122, respectively. The first vertical pressure-bearing surface 1121 and the second vertical pressure-bearing surface 1122 are respectively located on both sides of the horizontal pressure-bearing surface 1111 along the vertical direction, wherein, based on the shape of the outer shell 120, the second vertical pressure-bearing surface 1122 is a curved surface. From the top, In this embodiment, the first pressing portion 211 is formed as a vertical pressing surface, and the second pressing portion is formed as a horizontal pressing surface, and the vertical pressing surface is composed of a first vertical pressing surface 2111 and a second vertical pressing surface 2112. The pressure maintaining module 2 can slide toward the product 100 in a direction set at an angle to the vertical direction, and make the horizontal pressing surface fit with the horizontal pressure-bearing surface 1111, and the vertical pressing surface fit with the vertical pressure-bearing surface, wherein the first vertical pressing surface 2111 and the second vertical pressing surface 2112 are respectively fitted with the first vertical pressure-bearing surface 1121 and the second vertical pressure-bearing surface 1122, so that the first pressing portion 211 can apply a first pressure to the adhesive layer 110 in the horizontal direction, and the second pressing portion 212 can apply a second pressure to the adhesive layer 110 in the vertical direction, thereby maintaining pressure on all parts of the adhesive layer 110 to ensure that the adhesive layer 110 can be firmly bonded to the shell 120.

[0035] After the pressure maintenance is completed, the driving mechanism 4 can drive the pressure head 21 away from the product 100 , thereby releasing the pressure applied to the product 100 .

[0036] It is understandable that a release film is provided on the side of the adhesive layer 110 facing away from the housing 120 to prevent the pressing head 21 from adhering to the adhesive layer 110. Since the method of preventing the pressing head 21 from adhering to the adhesive layer 110 by providing a release film is a prior art, this embodiment will not elaborate on this.

[0037] It is worth noting that, in the present embodiment, two locations on the product 100 for bonding the adhesive layer 110 are provided, namely, a first bonding location 121 and a second bonding location 122. The first bonding location 121 and the second bonding location 122 are symmetrically arranged. From above, the pressure-maintaining device includes two pressure-maintaining modules 2. The two pressure-maintaining modules 2 are symmetrically arranged, and the symmetry plane 5 is a vertical plane. The sliding tracks of the two pressure-maintaining modules 2 are symmetrical about the symmetry plane 5. From above, the pressure-maintaining device in the present embodiment can maintain pressure on the two adhesive layers 110 respectively bonded to the first bonding location 121 and the second bonding location 122 through the two pressure-maintaining modules 2, so that the two adhesive layers 110 can be firmly bonded to the outer shell 120.

[0038] Furthermore, in this embodiment, the driving mechanism 4 is configured to drive the two pressure-maintaining dies 2 to move synchronously, so that the two pressure-maintaining dies 2 can perform the pressure-maintaining operation at the same time, thereby further improving the working efficiency.

[0039] As described above, in the present embodiment, the first bonding portion 121 and the second bonding portion 122 are arranged relative to each other, that is, for the two adhesive layers 110 respectively bonded to the first bonding portion 121 and the second bonding portion 122, the pressure-bearing portions of the two adhesive layers 110 are relative, and accordingly, the side of any one of the pressure heads 21 away from the other pressure head 21 is provided with a first pressing portion 211 and a second pressing portion 212, and the two pressure-keeping modules 2 are respectively the first pressure-keeping module 2 and the second pressure-keeping module 2, and are respectively provided with the first pressure head 21 and the second pressure head 21, and the first pressure-keeping module 2 and the second pressure-keeping module 2 are respectively described, and the side of the first pressure head 21 away from the second pressure head 21 and the side of the second pressure head 21 away from the first pressure head 21 are both provided with the first pressing portion 211 and the second pressing portion 212, and the driving mechanism 4 can drive the first pressure-keeping module 2 and the second pressure-keeping module 2 to move synchronously, thereby respectively maintaining pressure on the two adhesive layers 110.

[0040] Based on the above, two first slide rails 31 are arranged on the mounting frame 3, and the two first slide rails 31 are symmetrically arranged about the symmetry plane 5 mentioned above. The two pressure-maintaining modules 2 are slidably connected to the two first slide rails 31 respectively. Based on the above, the first slide rail 31 extends in a direction set at an angle with the vertical direction, and the angle is an acute angle. The pressure-maintaining module 2 also includes a slider 22, and the slider 22 is slidably connected to the first slide rail 31. The driving mechanism 4 includes a driving member 41 and a connecting rod 42, and the connecting rod 42 extends in the horizontal direction. Both ends of the connecting rod 42 are provided with rollers 421, and the two rollers 421 are symmetrically arranged about the symmetry plane 5. The slider 22 is provided with a roller 421 along the symmetry plane 5. The slide groove 224 extends in the horizontal direction, and the two rollers 421 are respectively arranged in the two slide grooves 224, that is, in this embodiment, the extension direction of the connecting rod 42 is consistent with the extension direction of the slide groove 224, and is arranged between the two sliders 22, and the two ends of the connecting rod 42 respectively extend into the two slide grooves 224, and are movably arranged in the slide groove 224 through the rollers 421, and the driving member 41 is configured to drive the connecting rod 42 to move in the vertical direction. When the connecting rod 42 moves in the vertical direction, the roller 421 rolls relative to the slider 22, thereby driving the two sliders 22 to move synchronously along the extension direction of the first slide rail 31, thereby driving the two pressing heads 21 to move synchronously.

[0041] In addition, it should be noted that the driving mechanism 4 also includes a second slide rail 43, which extends in the vertical direction, and the center line of the second slide rail 43 is located in the symmetry plane 5, and the connecting rod 42 is slidably connected to the second slide rail 43, thereby ensuring that the connecting rod 42 can stably move in the vertical direction.

[0042] Furthermore, the pressure head 21 is fixedly connected with a slide rod 23. For the corresponding pressure maintaining module 2 and the first slide rail 31, the axial direction of the slide rod 23 is parallel to the extension direction of the first slide rail 31. The slider 22 is sleeved on the outer periphery of the slide rod 23. The outer periphery of the slide rod 23 is sleeved with a spring 231. The spring 231 is connected between the slider 22 and the pressure head 21. After the pressure head 21 contacts the product 100, the slide rod 23 can move relative to the slider 22 along its axial direction. At the same time, the spring 231 is compressed, thereby ensuring that the pressure block is in flexible contact with the rubber layer 110, thereby further avoiding damage to the rubber layer 110 and the outer shell 120.

[0043] Moreover, it is worth mentioning that, since errors are inevitably present in the various structural parts of the pressure-keeping module 2 during manufacturing and assembly, for the two pressure-keeping modules 2, when the two pressure-keeping modules 2 move synchronously toward the product 100, it is easy for one of the two pressure heads 21 to contact the corresponding adhesive layer 110 first. Since the pressure head 21 in this embodiment can move relative to the slider 22 through the sliding rod 23, and a spring 231 is provided between the pressure head 21 and the slider 22, even if one of the two pressure heads 21 contacts the corresponding adhesive layer 110 first, the other pressure head 21 can contact the corresponding adhesive layer 110 later, thereby ensuring that both adhesive layers 110 can be pressure-maintained.

[0044] In addition, a limiting portion 232 is provided at one end of the slide bar 23 away from the pressure head 21, and the limiting portion 232 can abut against the side of the slider 22 away from the pressure head 21, thereby preventing the pressure head 21 and the slide bar 23 from falling off the slider 22. Specifically, when the pressure head 21 is in a position away from the product 100, the limiting portion 232 abuts against the side of the slider 22 away from the pressure head 21. After the pressure head 21 contacts the rubber layer 110, the limiting portion 232 moves along the axial direction of the slide bar 23 toward the side away from the slider 22. At the same time, the spring 231 is compressed and deformed. After the pressure head 21 is separated from the product 100, the spring 231 resumes its deformation, and the limiting portion 232 is restored to abut against the side of the slider 22 away from the pressure head 21.

[0045] Furthermore, the pressure head 21 is fixedly connected to two sliding rods 23 , thereby ensuring that the pressure head 21 can move more stably relative to the sliding block 22 , and the pressure head 21 can contact and apply pressure to all pressure-bearing parts of the adhesive layer 110 .

[0046] It is understandable that in other optional embodiments, the pressure head 21 may also be fixedly connected to three or more sliding rods 23, and this embodiment does not impose any specific limitation on this.

[0047] In addition, in the present embodiment, the slider 22 includes a first block 221, a second block 222 and a third block 223. The first block 221 is slidably connected to the first slide rail 31, the second block 222 is fixedly connected between the first block 221 and the third block 223, the pressure head 21 is installed on the third block 223, the second block 222 is provided with a first strip hole 2221, the first block 221 and the second block 222 are fixedly connected by a first bolt (not shown in the figure) passing through the first strip hole 2221, the first strip hole 2221 extends along a first direction perpendicular to the extension direction of the first slide rail 31, and the present embodiment can adjust the position of the second block 222 in the first direction by adjusting the position of the first bolt in the first strip hole 2221.

[0048] Furthermore, the second block 222 is also provided with a second strip hole 2222, and the second block 222 and the third block 223 are fixedly connected by a second bolt (not shown in the figure) passing through the second strip hole 2222, and the second strip hole 2222 extends along a second direction perpendicular to the extension direction of the first slide rail 31, and the first direction is perpendicular to the second direction. This embodiment can also adjust the position of the third block 223 in the second direction by adjusting the position of the second bolt in the second strip hole 2222.

[0049] In summary, this embodiment can adjust the position of the pressure head 21 by adjusting the position of the second block 222 and the third block 223, and further can compensate for the influence of manufacturing errors and / or assembly errors on the relative positions of the two pressure heads 21, thereby ensuring that the two pressure heads 21 are in contact with the product 100 as simultaneously as possible, and further ensuring that the pressures applied to the product 100 by the two subsequent pressure heads 21 are as equal as possible.

[0050] It is understandable that in other optional embodiments, the first strip-shaped hole 2221 may also be provided on the first block 221 , and similarly, the second strip-shaped hole 2222 may also be provided on the third block 223 , and this embodiment does not impose any specific limitation on this.

[0051] Furthermore, it should be noted that in this embodiment, two slide bars 23 can be used to ensure that the position of the pressing head 21 relative to the sliding block 22 is stable, and the two pressing heads 21 are at the same height, thereby further allowing the two pressing heads 21 to contact the product 100 as simultaneously as possible.

[0052] It is also worth mentioning that in the present embodiment, the driving member 41 is a toggle clamp, and the staff can operate the toggle clamp to raise and lower the connecting rod 42, thereby causing the slider 22 to slide along the first slide rail 31. Of course, in other optional embodiments, the driving member 41 may also be other linear drive structures such as a cylinder or an electric cylinder, and the present embodiment does not impose any specific restrictions on this.

[0053] It can be understood that in order to ensure that the pressure applied to the product 100 by the pressure head 21 remains unchanged during each pressure-maintaining operation, in this embodiment, the stroke of the driving member 41 driving the connecting rod 42 to move remains unchanged. However, when the product 100 is changed, it is necessary to adjust the pressure applied by the pressure head 21 to the product 100 during the pressure-maintaining operation. To this end, in this embodiment, the driving member 41 is installed on the mounting frame 3 through the mounting plate 44, and the mounting plate 44 is provided with a third strip hole 441. The mounting plate 44 and the mounting frame 3 are fixedly connected by a third bolt (not shown in the figure) passing through the third strip hole 441. The third strip hole 441 extends in the vertical direction. In this embodiment, the installation position of the driving member 41 can be adjusted by adjusting the position of the third bolt in the third strip hole 441, thereby adjusting the pressure applied by the pressure head 21 to the product 100 after the driving connecting rod 42 moves a fixed stroke by the driving member 41, thereby ensuring that the adhesive layer 110 is firmly bonded to the shell 120 while the adhesive layer 110 and / or the shell 120 are not damaged.

[0054] Compared to changing the stroke of the driving member 41 driving the connecting rod 42 by replacing the driving member 41 or changing and debugging the parameters of the driving member 41, in this embodiment, only the third bolt needs to be removed to adjust the pressure applied by the pressure head 21 to the product 100 during the pressure maintaining operation, which is easier to operate.

[0055] It is understandable that in other optional embodiments, the third strip-shaped hole 441 may also be provided on the mounting frame 3, and this embodiment does not impose any specific limitation on this.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pressure-maintaining device, characterized in that: include: A carrier (1) configured to carry a product (100); A pressure-maintaining module (2) and a mounting frame (3), wherein the pressure-maintaining module (2) is slidably connected to the mounting frame (3) along a direction that is set at an angle to the vertical direction, and the angle is an acute angle, and the pressure-maintaining module (2) comprises a pressure head (21), and the pressure head (21) is provided with a first pressing portion (211) and a second pressing portion (212); and The driving mechanism (4) is configured to drive the pressure-maintaining module (2) to slide, and to make the first pressing portion (211) and the second pressing portion (212) jointly press against the pressure-bearing portion of the product (100), wherein the first pressing portion (211) can apply a first pressure to the product (100) in a horizontal direction, and the second pressing portion (212) can apply a second pressure to the product (100) in a vertical direction.

2. The pressure maintaining device according to claim 1, characterized in that: The pressure-maintaining device comprises two pressure-maintaining die sets (2), the two pressure-maintaining die sets (2) are symmetrically arranged, and the symmetry plane (5) is a vertical plane, and the sliding tracks of the two pressure-maintaining die sets (2) are symmetrical about the symmetry plane (5).

3. The pressure maintaining device according to claim 2, characterized in that: The driving mechanism (4) is configured to drive the two pressure-maintaining dies (2) to move synchronously.

4. The pressure maintaining device according to claim 3, characterized in that: Two first slide rails (31) are arranged on the mounting frame (3), and the two first slide rails (31) are symmetrically arranged about the symmetry plane (5). The two pressure-maintaining modules (2) are respectively slidably connected to the two first slide rails (31). The pressure-maintaining module (2) also includes a slider (22), and the slider (22) is slidably connected to the first slide rail (31). The pressure head (21) is fixedly connected with a slide rod (23). For the correspondingly arranged pressure-maintaining module (2) and the first slide rail (31), the axial direction of the slide rod (23) is parallel to the extension direction of the first slide rail (31). The slider (22) is sleeved on the outer periphery of the slide rod (23), and the outer periphery of the slide rod (23) is sleeved with a spring (231), and the spring (231) is connected between the slider (22) and the pressure head (21).

5. The pressure maintaining device according to claim 4, characterized in that: The pressure head (21) is fixedly connected to at least two sliding rods (23).

6. The pressure maintaining device according to claim 5, characterized in that: A limiting portion (232) is provided at one end of the slide bar (23) away from the pressure head (21), and the limiting portion (232) can abut against a side of the slide block (22) away from the pressure head (21).

7. The pressure maintaining device according to claim 4, characterized in that: The slider (22) comprises a first block (221), a second block (222) and a third block (223); the first block (221) is slidably connected to the first slide rail (31); the second block (222) is fixedly connected between the first block (221) and the third block (223); the pressure head (21) is mounted on the third block (223); one of the first block (221) and the second block (222) is provided with a first strip hole (2221); the first block (221) and the second block (222) are connected by passing through the first The first strip hole (2221) is fixedly connected with the first bolt of the strip hole (2221), the first strip hole (2221) extends along a first direction perpendicular to the extension direction of the first slide rail (31), one of the second block (222) and the third block (223) is provided with a second strip hole (2222), the second block (222) and the third block (223) are fixedly connected by a second bolt passing through the second strip hole (2222), the second strip hole (2222) extends along a second direction perpendicular to the extension direction of the first slide rail (31), and the first direction is perpendicular to the second direction.

8. The pressure maintaining device according to claim 4, characterized in that: The driving mechanism (4) comprises a driving member (41) and a connecting rod (42), wherein the connecting rod (42) extends in a horizontal direction, rollers (421) are arranged at both ends of the connecting rod (42), and the two rollers (421) are symmetrically arranged about the symmetry plane (5), and the sliding block (22) is provided with a sliding groove (224) extending in a horizontal direction, and the two rollers (421) are respectively arranged in the two sliding grooves (224), and the driving member (41) is configured to drive the connecting rod (42) to move in a vertical direction.

9. The pressure maintaining device according to claim 8, characterized in that: The driving mechanism (4) further comprises a second slide rail (43), the second slide rail (43) extending in a vertical direction, and the center line of the second slide rail (43) is located in the symmetry plane (5), and the connecting rod (42) is slidably connected to the second slide rail (43).

10. The pressure maintaining device according to claim 8, characterized in that: The driving member (41) is mounted on the mounting frame (3) via a mounting plate (44); one of the mounting plate (44) and the mounting frame (3) is provided with a third strip hole (441); the mounting plate (44) and the mounting frame (3) are fixedly connected via a third bolt passing through the third strip hole (441); and the third strip hole (441) extends in a vertical direction.

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