Scratch-proof pressure maintaining equipment

Abstract

The utility model relates to the technical field of pressure maintaining equipment, and particularly discloses anti-scratch pressure maintaining equipment, which comprises a jig bottom die, a pressure maintaining device and a pressure maintaining device, the jig top die is positioned above the jig bottom die; the linear driving mechanism is used for driving the jig top die to downwards press the workpiece to be subjected to pressure maintaining in the loose positioning groove; wherein the bottom surface of the workpiece to be subjected to pressure maintaining is provided with an internal concave cavity with a downward opening, and the internal concave cavity is provided with a plurality of horizontal base planes; a supporting boss which protrudes upwards and extends into the inner cavity is arranged in the loose positioning groove, and the supporting boss is provided with a supporting plane used for supporting the corresponding horizontal base plane. The anti-scratching pressure maintaining device can effectively solve the problem that an existing pressure maintaining device is prone to scratching a workpiece to be subjected to pressure maintaining.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-holding equipment, in particular to a scratch-proof pressure-holding equipment. Background Art

[0002] In the production process of products such as Bluetooth TWS / OWS earphones and charging cases, it is often necessary to complete the connection operation between components by bonding. After bonding, it is generally necessary to use pressure-holding equipment to press the workpiece to be pressure-held, so as to ensure the reliability of bonding.

[0003] When the existing pressure-holding jig presses the workpiece to be pressure-held, it is necessary to first place the workpiece to be pressure-held into a tightly fitting positioning groove for fixation. The shape and size of the tightly fitting positioning groove are basically exactly the same as those of the workpiece to be pressure-held. Therefore, after the workpiece to be pressure-held is placed into the tightly fitting positioning groove, the tightly fitting positioning groove can abut against the outer wall of the workpiece to be pressure-held, thereby restricting the lateral movement of the workpiece to be pressure-held; after completing the lateral positioning of the workpiece to be pressure-held, the position to be pressure-held of the workpiece to be pressure-held can be pressed downward, thereby completing the pressure-holding operation.

[0004] In the above process, the tightly fitting positioning groove will abut against the outer wall of the workpiece to be pressure-held to achieve the lateral positioning of the workpiece to be pressure-held. Although this method can ensure the position stability of the workpiece to be pressure-held to a certain extent during the pressure-holding process, it is also because the tightly fitting positioning groove will abut against the outer wall of the workpiece to be pressure-held. Therefore, when the workpiece to be pressure-held is placed in and taken out, the groove wall of the tightly fitting positioning groove will rub against the outer wall of the workpiece to be pressure-held, and the appearance of the workpiece to be pressure-held is often scratched due to the friction.

[0005] Therefore, it is necessary to improve the existing pressure-holding equipment to solve the problem that it is easy to scratch the workpiece to be pressure-held.

[0006] The above information disclosed in this background section is only included to enhance the understanding of the background of the present disclosure, and thus may include information that does not form the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0007] An object of the utility model is to provide a scratch-proof pressure-holding equipment, which can effectively solve the problem that the existing pressure-holding equipment is easy to scratch the workpiece to be pressure-held.

[0008] To achieve the above object, the utility model provides a scratch-proof pressure-holding equipment, including:

[0009] A jig bottom mold, the jig bottom mold is provided with a loose positioning groove for accommodating the workpiece to be pressure-held, wherein the groove wall of the loose positioning groove is in clearance fit with the workpiece to be pressure-held;

[0010] A jig top mold, the jig top mold being located above the jig bottom mold;

[0011] A linear drive mechanism, the drive end of the linear drive mechanism being connected to the jig top mold and used to drive the jig top mold to press down on the workpiece to be pressure-maintained in the loose positioning groove;

[0012] Wherein,

[0013] The bottom surface of the workpiece to be pressure-maintained is provided with an internal cavity opening downward, and a plurality of horizontal base surfaces are provided on the bottom and / or the cavity wall of the internal cavity;

[0014] The loose positioning groove is provided with a support boss protruding upward into the internal cavity, and a support plane for supporting the corresponding horizontal base surface is provided at a position corresponding to each horizontal base surface of the support boss.

[0015] Optionally, a plurality of positioning pins protruding upward are provided on the jig bottom mold.

[0016] Optionally, at a position corresponding to each positioning pin on the bottom surface of the jig top mold, a pin slot for inserting the corresponding positioning pin is provided.

[0017] Optionally, the jig top mold includes a top mold top plate connected to the drive end of the linear drive mechanism, a top mold alignment block located below the top mold top plate and provided with the pin slot, and a top mold pressing rod located below the top mold alignment block and used to press down on the workpiece to be pressure-maintained.

[0018] Optionally, the top mold top plate and the top mold alignment block are detachably connected.

[0019] Optionally, the top mold alignment block and the top mold pressing rod are detachably connected.

[0020] Optionally, it further includes a bottom mold positioning plate detachably connected to the jig bottom mold.

[0021] Optionally, the jig bottom mold and the bottom mold positioning plate are magnetically connected by a magnetic attraction assembly.

[0022] Optionally, the magnetic attraction assembly includes a lower magnet fixed on the bottom mold positioning plate and an upper magnet fixed on the bottom surface of the jig bottom mold and magnetically connected to the lower magnet.

[0023] The beneficial effect of the present utility model is: to provide an anti-scratch pressure-maintaining device,

[0024] ①By setting a fixture bottom die with a loose positioning groove, a fixture top die and a linear drive mechanism that cooperate with it, and using the clearance fit between the loose positioning groove and the workpiece to be pressure-maintained, the scratching problem caused by the friction between the outer wall of the fixture and the outer wall of the workpiece to be pressure-maintained in the traditional pressure-maintaining equipment is effectively avoided, greatly improving the appearance quality of the product;

[0025] ②For different structures of the internal concave cavity of the workpiece to be pressure-maintained, a flexible support boss design scheme is provided. When the internal concave cavity structure is simple, the support boss can be processed into a profiling part that is exactly the same as the internal concave cavity; when the shape of the internal concave cavity is irregular, it is only necessary to find a horizontal base surface on the cavity wall and / or cavity bottom of the internal concave cavity and set a support plane correspondingly, which not only ensures the effective support for the workpiece to be pressure-maintained, but also reduces the processing difficulty and production cost of the fixture bottom die;

[0026] Therefore, the anti-scratching pressure-maintaining equipment provided by the present utility model can not only effectively solve the problem that the existing pressure-maintaining equipment is easy to scratch the workpiece to be pressure-maintained, but also effectively reduce the processing difficulty of the fixture bottom die, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 Structural schematic diagram of the anti-scratching pressure-maintaining equipment provided for the embodiment;

[0029] Figure 2 Structural schematic diagram of the fixture bottom die provided for the embodiment;

[0030] Figure 3 Structural schematic diagram of the fixture top die provided for the embodiment.

[0031] In the figure:

[0032] 1. Fixture bottom die; 101. Loose positioning groove; 102. Support boss; 1021. Support plane; 103. Positioning pin;

[0033] 2. Fixture top die; 201. Top die top plate; 202. Top die alignment block; 2021. Pin slot; 203. Top die pressure rod;

[0034] 3. Linear drive mechanism;

[0035] 4. Bottom die positioning plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In the present utility model, the mention of "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present utility model. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present utility model belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present utility model.

[0038] In the description of the present utility model, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: the existence of A, the existence of B, and the simultaneous existence of A and B. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0039] In the present utility model, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationship between these entities or operations.

[0040] Without further limitation, in the present utility model, the expressions such as "comprising", "including", "having" or other similar expressions used in the statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or workpiece to be pressure-maintained including the said elements, so that the process, method or workpiece including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent in such process, method or workpiece.

[0041] Similar to the understanding in the "Examination Guidelines", in the present utility model, expressions such as "greater than", "less than", "exceeding" are understood not to include the number itself; expressions such as "above", "below", "within" are understood to include the number itself. In addition, in the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0042] In the description of the embodiments of the present utility model, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. It is only for the convenience of describing the specific embodiments of the present utility model or facilitating the understanding of the reader, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0043] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, the terms such as "installation", "connection", "attachment", "fixation", "setting", etc. shall be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the technical field to which the present utility model belongs, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0044] The present utility model provides an anti-scratch pressure-holding device, which is applicable to the application scenario of pressure-holding treatment for workpieces to be pressure-held, and can effectively solve the problem that the existing pressure-holding devices are prone to scratching the workpieces to be pressure-held.

[0045] See Figure 1 , in this embodiment, the anti-scratch pressure-holding device includes a fixture bottom mold 1, a fixture top mold 2, a linear drive mechanism 3, and a bottom mold positioning plate 4.

[0046] See Figure 2 , the fixture bottom mold 1 is provided with a loose positioning groove 101 for accommodating the workpiece to be pressure-held, wherein the groove wall of the loose positioning groove 101 is in clearance fit with the workpiece to be pressure-held. The fixture top mold 2 is located above the fixture bottom mold 1. The driving end of the linear drive mechanism 3 is connected to the fixture top mold 2 and is used to drive the fixture top mold 2 to press down the workpiece to be pressure-held in the loose positioning groove 101.

[0047] Among them, the bottom surface of the workpiece to be pressure-maintained is provided with an internal cavity opening downward, and several horizontal base surfaces are provided on the bottom and / or the cavity wall of the internal cavity. A support boss 102 protruding upward into the internal cavity is provided in the loose positioning groove 101, and a support plane 1021 for supporting the corresponding horizontal base surface is provided at the position of the support boss 102 corresponding to each horizontal base surface.

[0048] For the anti-scratch pressure-maintaining jig provided by the present utility model, first, a loose positioning groove 101 with a size larger than the workpiece to be pressure-maintained is provided at the bottom die 1 of the jig, so that there is a clearance fit between the loose positioning groove 101 and the workpiece to be pressure-maintained, avoiding the friction between the groove wall of the loose positioning groove 101 and the outer wall of the workpiece to be pressure-maintained and causing the outer wall of the workpiece to be scratched.

[0049] Then, a support boss 102 protruding upward into the internal cavity of the workpiece to be pressure-maintained is provided at the bottom of the loose positioning groove 101 to provide upward support for the workpiece to be pressure-maintained.

[0050] It should be noted that in the present utility model, the shape and size of the support boss 102 can be completely consistent with the internal cavity or inconsistent with the internal cavity:

[0051] ① If the structure of the internal cavity is relatively simple, for example, the internal cavity is a regular cylinder or cuboid as a whole, at this time, it is not difficult to process the support boss 102 into a profiling part with the same shape and size as the internal cavity, and the support boss 102 can be set to have the same shape and size as the internal cavity.

[0052] ② However, if the overall shape of the internal cavity is an irregular shape, for example, the bottom and / or the cavity wall of the internal cavity contain multiple special-shaped curved surfaces, at this time, it is more difficult and costly to process the support boss 102 into a profiling part with the same shape and size as the internal cavity. At this time, it is not required that the shape and size of the support boss 102 be completely consistent with the internal cavity. Only several horizontal planes need to be found in the cavity wall and / or the cavity bottom of the internal cavity as horizontal base surfaces, and then a support plane 1021 (the support plane 1021 is also a horizontal plane) that can provide upward support for the corresponding horizontal base surface is provided at the position of the support boss 102 corresponding to each horizontal base surface.

[0053] Therefore, the anti-scratch pressure-maintaining equipment provided by the present utility model can not only effectively solve the problem that the existing pressure-maintaining equipment is easy to scratch the workpiece to be pressure-maintained, but also effectively reduce the processing difficulty of the bottom die 1 of the jig, thereby reducing the production cost.

[0054] See Figure 2 , in this embodiment, a plurality of positioning pins 103 protruding upward are provided on the bottom die 1 of the jig. Correspondingly, seeFigure 3 On the bottom surface of the fixture top die 2, corresponding to the position of each positioning pin 103, there is a pin slot 2021 for the corresponding positioning pin 103 to be inserted into.

[0055] The fixture bottom die 1 and the fixture top die 2 are cooperatively limited through the positioning pins and the pin slots 2021, so as to take out the fixture bottom die 1, load the workpiece to be pressure-maintained, and then reinstall it under the fixture top die 2, which is convenient for the loading and unloading of the fixture bottom die 1. Of course, multiple fixture bottom dies 1 can also be made, and the workpieces to be pressure-maintained are pre-loaded. After each fixture bottom die 1 is taken out, another fixture bottom die 1 containing the workpiece to be pressure-maintained that has not been pressure-maintained is immediately put in, and then the workpiece to be pressure-maintained in the just-taken-out fixture bottom die 1 is taken out during the pressure-maintaining period, so as to reduce the pressure-maintaining waiting time and improve production efficiency.

[0056] In this embodiment, the bottom die positioning plate 4 is detachably connected to the fixture bottom die 1. For example, the fixture bottom die 1 and the bottom die positioning plate 4 are magnetically connected through a magnetic attraction component. Specifically, the magnetic attraction component includes a lower magnet fixed on the bottom die positioning plate 4 and an upper magnet fixed on the bottom surface of the fixture bottom die 1 and magnetically connected to the lower magnet. The quick installation, disassembly and positioning of the fixture bottom die 1 are completed by magnetic attraction, which is beneficial to further improve production efficiency.

[0057] In this embodiment, the fixture top die 2 includes a top die top plate 201 connected to the driving end of the linear driving mechanism 3, a top die alignment block 202 located below the top die top plate 201 and provided with the pin slots 2021, and a top die pressing rod 203 located below the top die alignment block 202 and used for pressing the workpiece to be pressure-maintained downward.

[0058] Optionally, the top die top plate 201 and the top die alignment block 202 are detachably connected, and the top die alignment block 202 and the top die pressing rod 203 are detachably connected. For example, the above-mentioned detachable connection is realized by means of locking with bolts.

[0059] The pin slots need to be inserted and cooperated with the positioning pins 103 and are easily damaged. When replacement is required, only the top die alignment block 202 can be replaced, and the top die top plate 201 and the top die pressing rod 203 are reused, thereby reducing the maintenance cost.

[0060] In summary, the anti-scratch pressure-maintaining equipment provided in this embodiment has the following advantages:

[0061] ①By setting a fixture bottom mold 1 with a loose positioning groove 101, a fixture top mold 2 and a linear drive mechanism 3 that cooperate with it, and using the clearance fit between the loose positioning groove 101 and the workpiece to be pressure-maintained, the scratching problem caused by the friction between the outer wall of the fixture and the outer wall of the workpiece to be pressure-maintained in traditional pressure-maintaining equipment is effectively avoided, greatly improving the appearance quality of the product;

[0062] ②For different structures of the internal cavity of the workpiece to be pressure-maintained, a flexible support boss 102 design scheme is provided. When the internal cavity structure is simple, the support boss 102 can be processed into a profiling part that is exactly the same as the internal cavity; when the shape of the internal cavity is irregular, it is only necessary to find a horizontal base surface on the cavity wall and / or cavity bottom of the internal cavity and set the support plane 1021 correspondingly, which not only ensures the effective support of the workpiece to be pressure-maintained, but also reduces the processing difficulty and production cost of the fixture bottom mold 1;

[0063] ③The positioning pin 103 provided on the fixture bottom mold 1 cooperates with the pin slot 2021 on the fixture top mold 2, which facilitates the taking and loading / unloading operations of the fixture bottom mold 1. At the same time, multiple fixture bottom molds 1 can be made and used alternately, reducing the pressure-maintaining waiting time and improving production efficiency;

[0064] ④Each part of the fixture top mold 2 is detachably connected, such as the detachable connection between the top mold top plate 201 and the top mold alignment block 202, and between the top mold alignment block 202 and the top mold pressure rod 203. When vulnerable parts such as the pin slot 2021 need to be replaced, only the corresponding parts need to be replaced, reducing the maintenance cost;

[0065] ⑤The fixture bottom mold 1 and the bottom mold positioning plate 4 are magnetically connected by a magnetic attraction component, realizing the rapid installation, disassembly and positioning of the fixture bottom mold 1, and further improving production efficiency;

[0066] ⑥Due to the internal limit, materials such as urethane rubber, Teflon, and acetal can be used for the fixture bottom mold 1, and there is no need to spray anti-scratch materials and stick flannel on the surface of the fixture bottom mold 1 to increase costs to prevent scratching.

[0067] It should be noted that the linear drive mechanism mentioned in the present utility model can be a cylinder, a hydraulic cylinder, an electric cylinder or a motor screw linear module, etc., and the rotary drive mechanism mentioned can be a brushed motor, a brushless motor, or a rotary cylinder, etc. The present utility model does not limit the specific structural forms of the linear drive mechanism and the rotary drive mechanism.

[0068] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structural or equivalent process substitutions or modifications made based on the essential concept of this application and using the content recorded in the text and drawings of the specification of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A scratch-resistant pressure-maintaining device, characterized in that: include: A jig bottom die (1), the jig bottom die (1) being provided with a loose positioning groove (101) for accommodating a workpiece to be pressurized, wherein a groove wall of the loose positioning groove (101) is clearance-matched with the workpiece to be pressurized; A jig top mold (2), the jig top mold (2) being located above the jig bottom mold (1); A linear drive mechanism (3), wherein a drive end of the linear drive mechanism (3) is connected to the jig top die (2) and is used to drive the jig top die (2) to press downwards the workpiece to be pressure-maintained in the loose positioning groove (101); in, The bottom surface of the workpiece to be pressure-maintained is provided with an internal cavity opening downward, and the cavity bottom and / or cavity wall of the internal cavity are provided with a plurality of horizontal base surfaces; The loose positioning groove (101) is provided with a supporting boss (102) that protrudes upward into the internal cavity, and the supporting boss (102) is provided with a supporting plane (1021) corresponding to each horizontal base surface at a position thereof for supporting the corresponding horizontal base surface.

2. The anti-scratch pressure-maintaining device according to claim 1, characterized in that: The jig bottom mold (1) is provided with a plurality of positioning pins (103) protruding upwards.

3. The anti-scratch pressure-maintaining device according to claim 2, characterized in that: The bottom surface of the jig top mold (2) corresponds to the position of each positioning pin (103) and is provided with a pin slot (2021) for inserting the corresponding positioning pin (103).

4. The anti-scratch pressure-maintaining device according to claim 3, characterized in that: The jig top die (2) comprises a top die plate (201) connected to the driving end of the linear drive mechanism (3), a top die alignment block (202) located below the top die plate (201) and provided with the latch groove (2021), and a top die pressing rod (203) located below the top die alignment block (202) and used for pressing downward the workpiece to be maintained under pressure.

5. The anti-scratch pressure-maintaining device according to claim 4, characterized in that: The top mold top plate (201) and the top mold alignment block (202) are detachably connected.

6. The anti-scratch pressure-maintaining device according to claim 4, characterized in that: The top die alignment block (202) and the top die pressing rod (203) are detachably connected.

7. The anti-scratch pressure-maintaining device according to claim 3, characterized in that: It also includes a bottom mold positioning plate (4) detachably connected to the jig bottom mold (1).

8. The anti-scratch pressure-maintaining device according to claim 7, characterized in that: The jig bottom die (1) and the bottom die positioning plate (4) are magnetically connected via a magnetic attraction component.

9. The anti-scratch pressure-maintaining device according to claim 8, characterized in that: The magnetic attraction component comprises a lower magnet fixedly mounted on the bottom mold positioning plate (4), and an upper magnet fixedly mounted on the bottom surface of the jig bottom mold (1) and magnetically connected to the lower magnet.

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