Press-fit mechanism and press-fit die

Abstract

The embodiment of the utility model relates to the technical field of vehicle part machining, and discloses a press-fit mechanism and a press-fit die, the press-fit mechanism is arranged between an upper die base and a lower die base and used for press-fit bending of a to-be-machined part, and the press-fit mechanism comprises a fixing base fixedly connected with the lower die base; the pressing part is rotatably arranged on the fixed seat, the pressing part comprises a pressing curved knife, the pressing curved knife is used for pressing a workpiece to be machined, and the pressing part comprises a pressing position enabling the pressing curved knife to be close to the lower die seat and a separating position enabling the pressing curved knife to be far away from the lower die seat; the reset structure is connected between the press-fit part and the fixed seat and used for keeping the press-fit part at the separation position under the action of reset force; and the driving part is fixedly connected with the upper die base and used for driving the pressing part to rotate from the separation position to the pressing position in the process that the upper die base gets close to the lower die base. According to the press-fit mechanism and the press-fit mold, the problem that the press-fit effect of the press-fit mold on the to-be-machined part is not ideal in the prior art can be solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle parts processing, and in particular to a pressing mechanism and a pressing die. Background Art

[0002] At present, users have higher and higher requirements for the aesthetics and functionality of automobiles. As vehicle panels need to take both aesthetics and functionality into consideration, their shapes are becoming more and more complex. Accordingly, the structure of the pressing mold for processing automobile panels is also becoming more and more complex.

[0003] In the related art, the automobile door assembly pressing mold is composed of a main bending mechanism and a pre-bending mechanism. The main bending mechanism is a main bending knife arranged on the upper die seat, and the pre-bending mechanism is a rocker mechanism and a pre-bending knife arranged on the lower die seat. When the mold is pressed, the upper die seat drives the main bending knife and the driver downward, the driver drives the rocker mechanism to work, and the rocker mechanism drives the pre-bending knife to move along its motion trajectory to complete the pre-bending work. The upper die seat continues to move downward, and the pre-bending knife is reset first. After the pre-bending knife is reset, the die seat continues to move downward, driving the main bending knife to continue to move downward to complete the final workpiece pressing work.

[0004] Since the shape of the workpiece to be processed is relatively complex, more pressing structures need to be set on the upper die seat, which causes the setting space of the main curved knife to be compressed, affecting the pressing effect of the main curved knife and making the pressing shape of the workpiece to be processed unsatisfactory. Utility Model Content

[0005] In view of this, the embodiments of the present application provide a pressing mechanism and a pressing mold to solve the problem that the pressing mold in the related art has an unsatisfactory pressing effect on the workpiece.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] In the first aspect, an embodiment of the present application provides a pressing mechanism, which is arranged between an upper die base and a lower die base and is used to press and bend the workpiece to be processed, including: a fixed base, fixedly connected to the lower die base; a pressing part, rotatably arranged on the fixed base, the pressing part including a pressing curved knife, the pressing curved knife is used to press the workpiece to be processed, the pressing part including a pressing position in which the pressing curved knife is close to the lower die base and a separation position in which the pressing curved knife is away from the lower die base; a reset structure, connected between the pressing part and the fixed base, for keeping the pressing part in the separation position under the action of the reset force; a driving part, fixedly connected to the upper die base, for driving the pressing part to rotate from the separation position to the pressing position when the upper die base approaches the lower die base.

[0008] The pressing mechanism provided by the embodiment of the present application can maintain the separation position by being affected by other external forces in addition to the reset force of the reset structure in the process of the upper die seat gradually moving downward to press the lower die seat before the driving part contacts the pressing part. After the driving part contacts the pressing part, as the upper die seat continues to move downward, the driving part overcomes the reset force of the reset structure and drives the pressing part to gradually rotate from the separation position to the pressing position, thereby achieving the pressing and bending forming of the workpiece to be processed. With such a setting, the method of setting two scimitars, a main scimitar and a pre-scimitar, in the related art is abandoned to achieve the bending effect on the workpiece, and only one pressing scimitar is set on the lower die seat to achieve the bending effect on the workpiece, so that there is no need to set the main scimitar on the upper die seat, and then there will be no problem of interference between the main scimitar and other pressing parts on the upper die seat, thereby ensuring the forming effect of the workpiece to be processed.

[0009] In a possible implementation of the present application, the pressing mechanism further includes a pivot structure, and the pressing portion is rotatably disposed on the fixed seat via the pivot structure.

[0010] In a possible implementation of the present application, the fixed seat includes a fixed block, an axle seat and a rotating shaft. The fixed block is fixedly connected to the lower mold seat, and the axle seat is arranged on the fixed block; an axle hole is arranged on the pressing part, and the rotating shaft passes through the fixed block and the axle hole; the fixed block, the axle seat, the rotating shaft and the axle hole form a pivot structure.

[0011] In a possible implementation of the present application, the pressing portion has a first side and a second side that are opposite to each other in the horizontal direction, the pressing knife is arranged on the first side of the pressing portion, the driving portion is located on the second side of the pressing portion and is driven and cooperated with the second side of the pressing portion, and the pivot structure is located between the pressing knife and the driving portion.

[0012] In a possible implementation of the present application, the driving part includes a first driving block, which is provided with a driving inclined surface and an abutting surface. The abutting surface is located on the upper side of the driving inclined surface. The driving inclined surface gradually inclines toward a side away from the pressing part in a direction from top to bottom. The driving inclined surface cooperates with the pressing part in driving. When the abutting surface abuts against the pressing part, the pressing part is located in the pressing position.

[0013] In a possible implementation of the present application, the fixed seat includes a fixed block and a connecting arm, the connecting arm is located on the side of the fixed block close to the driving part; the first end of the reset structure is connected to the pressing part, and the second end of the reset structure is connected to the connecting arm; the first end of the reset structure is higher than the pivot structure.

[0014] In a possible implementation of the present application, the pressing part includes a connecting part, a sliding part and a third reset member, the sliding part is slidably arranged on the connecting part in a vertical direction, the connecting part is rotatably connected to the fixed seat, and the connecting part is driven to cooperate with the driving part, and the pressing knife is arranged on the sliding part; the sliding part has a pre-pressing position away from the lower die seat and a pressing position close to the lower die seat, the third reset member is arranged between the sliding part and the connecting part, and the third reset member can keep the sliding part in the pre-pressing position under the action of the reset force; the pressing mechanism also includes a second driving block, the second driving block is arranged on the upper die seat, and the second driving block is used to press-fit with the pressing knife and / or the sliding part after the pressing part moves to the pressing position, so as to move the sliding part from the pre-pressing position to the pressing position.

[0015] In a possible implementation of the present application, the connecting portion includes a bottom block and a side block arranged at an angle to the bottom block, the bottom block is rotatably connected to the fixing seat, and the side block is drivingly matched with the driving portion;

[0016] A sliding guide structure is arranged between the sliding part and the side block, and the sliding part and the connecting part are slidably connected through the sliding guide structure; and the third reset member is arranged between the bottom block and the sliding part.

[0017] In the second aspect, an embodiment of the present application provides a pressing mold, comprising: a lower mold base, having a placement position, the placement position is used to place the workpiece to be processed; an upper mold base, movably arranged above the lower mold base, the upper mold base having an opening position separated from the lower mold base and a closing position press-fitted with the lower mold base; a pressing mechanism, arranged between the upper mold base and the lower mold base, the pressing mechanism is the above-mentioned pressing mechanism, wherein a driving part is arranged on the upper mold base, and a fixed seat, a pressing part and a reset structure are arranged on the lower mold base; in the process of the upper mold base moving from the opening position to the closing position, the driving part drives and cooperates with the pressing part to rotate the pressing part from the separation position to the pressing position.

[0018] In the third aspect, an embodiment of the present application provides a pressing mold, including: a lower mold base, having a placement position, the placement position is used to place the workpiece to be processed; an upper mold base, movably arranged above the lower mold base, the upper mold base having an opening position separated from the lower mold base, a first closing position pre-pressed with the lower mold base, and a second closing position press-fitted with the lower mold base; a pressing mechanism, arranged between the upper mold base and the lower mold base, the pressing mechanism is the above-mentioned pressing mechanism, wherein the driving part and the second driving block are arranged on the upper mold base, and the fixed seat, the pressing part and the reset structure are arranged on the lower mold base; in the process of the upper mold base moving from the opening position to the first closing position, the driving part drives and cooperates with the pressing part to rotate the pressing part from the separation position to the pressing position; in the process of the upper mold base moving from the first closing position to the second closing position, the second driving block press-fits with the pressing curved knife and / or the sliding part to move the sliding part from the pre-pressing position to the pressing position.

[0019] The laminating die of the above-mentioned embodiment is applied, and the laminating stroke of the upper die seat is increased by setting the laminating part as a sliding part and a connecting part that can slide relative to each other. Specifically, the first stroke of the upper die seat is to drive the laminating part as a whole from the separation position to the laminating position by the driving part. The second stroke of the upper die seat is after the first stroke ends, the upper die seat continues to move downward, so that the second driving block and the sliding part are crimped and matched, and the sliding part continues to move downward from the pre-pressing position under the push of the second driving block until the upper die seat and the lower die seat are pressed, and the sliding part moves to the pressing position, which further improves the laminating effect of the workpiece to be processed, and also enriches the bending angle of the workpiece to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a pressing mechanism in the related art;

[0021] Figure 2 It is a partial structural schematic diagram of an upper die seat of the related technology;

[0022] Figure 3 A schematic diagram of the structure of the pressing mechanism provided in the embodiment of the present application;

[0023] Figure 4 A schematic diagram of a partial structure of a pressing mechanism provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of the driving part of the pressing mechanism provided in an embodiment of the present application;

[0025] Figure 6 This is a schematic diagram of the structure of the pressing mold provided in the embodiment of the present application, wherein: Figure 6 The schematic diagram of the structure when the upper die base is in the die opening position is shown;

[0026] Figure 7 for Figure 6 A schematic diagram of a partial structure of a pressing die;

[0027] Figure 8 This is a schematic diagram of the structure of the pressing mold provided in the embodiment of the present application, wherein: Figure 8 A schematic diagram showing the structure of the upper mold base when it is in the second mold closing position;

[0028] Fig. 9 for Figure 8 Schematic diagram of the partial structure of the pressing mold.

[0029] Reference numerals:

[0030] 10. Pressing mechanism; 20. Pressing die;

[0031] 101. main curved blade; 102. pre-curved blade; 103. rocker mechanism; 104. drive block; 105. pressure block;

[0032] 200. Parts to be processed;

[0033] 300, fixed seat; 310, fixed block; 320, connecting arm; 330, shaft seat; 340, rotating shaft;

[0034] 400, pressing part; 410, pressing curved knife; 420, connecting part; 421, bottom block; 422, side block; 430, sliding part; 440, third reset member; 450, sliding guide structure; 451, slide rail; 452, limit block;

[0035] 500, reset structure;

[0036] 600, driving portion; 610, driving inclined surface; 620, abutting surface;

[0037] 700, pivot structure;

[0038] 800, second driving block;

[0039] 910, upper die base; 920, lower die base. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0041] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0042] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0043] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0045] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0046] The pressing mechanism and pressing die play a very important role in the pressing and forming process of vehicle parts. Taking automobile panels as an example, users have higher and higher requirements for the aesthetics and functionality of automobiles. As automobile panels need to take both aesthetics and functionality into consideration, their shapes are becoming more and more complex. Therefore, the pressing die structure for processing automobile panels is also becoming more and more complex.

[0047] In related technologies, such as Figure 1 As shown, the automobile door assembly pressing mold is composed of a main bending mechanism and a pre-bending mechanism. The main bending mechanism is a main bending knife 101 arranged on the upper die seat, and the pre-bending mechanism is a rocker mechanism 103 and a pre-bending knife 102 arranged on the lower die seat. When the mold is pressed, the upper die seat drives the main bending knife 101 and the driver to move downward, the driver drives the rocker mechanism 103 to work, and the rocker mechanism 103 drives the pre-bending knife 102 to move along its motion trajectory to complete the pre-bending work, and then the upper die seat continues to move downward, and the pre-bending knife 102 is reset first. After the pre-bending knife 102 is reset, the upper die seat continues to move downward, driving the main bending knife 101 to continue to move downward to complete the final workpiece pressing work.

[0048] Since the shape of the workpiece is relatively complex, more pressing structures need to be set on the upper die seat, which compresses the setting space of the main curved knife, affects the pressing effect of the main curved knife, and makes the pressing shape of the workpiece unsatisfactory. Figure 2As shown, the pressing block 105 and the main curved knife 101 are both arranged on the upper die seat, the pressing block 105 is used to press the inner edge of the workpiece 200 to be processed, and the main curved knife 101 is used to press the outer edge of the workpiece 200 to be processed. Since the distance H0 between the inner edge and the outer edge of the workpiece 200 to be processed is small, the setting space of the main curved knife 101 is reduced, resulting in the pressing area of ​​the main curved knife 101 being affected, which in turn causes the molding effect of the workpiece 200 to be processed to be unsatisfactory.

[0049] In view of this, the present embodiment provides a pressing mechanism and a pressing mold. The pressing mechanism abandons the method of setting two curved knives, a main curved knife and a pre-curved knife, and only sets one pressing curved knife on the lower mold base. The pressing curved knife is used to achieve the pressing and bending effect of the workpiece to be processed, so that there is no need to set a main curved knife on the upper mold base, and thus there will be no problem of interference between the main curved knife and other pressing parts on the upper mold base.

[0050] It should be noted that the pressing mechanism and pressing mold provided in the embodiment of the present application can be used for the processing of vehicle covers, wherein the vehicle can refer to a large car, a small car, a special-purpose vehicle, etc. For example, according to the vehicle model, the vehicle in the present application can be a sedan model, an off-road vehicle, a multi-purpose vehicle (MPV) model or other models. For a vehicle, wheels, a power source, and a transmission system arranged between the wheels and the power source are generally provided. The transmission system can transmit the power provided by the power source to the wheels, so that the wheels rotate, thereby driving the vehicle to travel.

[0051] It should be noted that in the embodiments of the present application, the type of the power source of the vehicle is not limited. For example, for a fuel vehicle, the power source may refer to a fuel engine such as a gasoline engine or a diesel engine; for an electric vehicle, the power source may refer to an electric motor; for a hybrid vehicle, the power source may refer to an engine or an electric motor; for a vehicle powered by other means, the power source may refer to a device that generates power.

[0052] In addition, the pressing mechanism and pressing mold of this embodiment can also be used to process and shape other equipment, such as large industrial equipment, aircraft, robots and other equipment.

[0053] The pressing mechanism and pressing mold of this embodiment are described below with reference to the accompanying drawings.

[0054] like Figure 2 as well as Figures 6 to 9 As shown, the embodiment of the present application provides a pressing mechanism 10 , which is disposed between an upper die base 910 and a lower die base 920 and is used to press and bend a workpiece 200 .

[0055] The pressing mechanism 10 includes a fixing seat 300 , a pressing portion 400 , a restoring structure 500 and a driving portion 600 .

[0056] Specifically, the fixing base 300 is fixedly connected to the lower die base 920 , thereby ensuring the connection stability of various structures disposed on the lower die base.

[0057] The pressing part 400 is rotatably arranged on the fixed base 300, and a placement position for placing the workpiece to be processed is also arranged on the lower die base 920. The pressing part 400 includes a pressing curved knife 410, and the pressing curved knife 410 is used to press the workpiece to be processed 200. The pressing part 400 includes a pressing position where the pressing curved knife 410 is close to the lower die base 920 and a separation position where the pressing curved knife 410 is away from the lower die base 920. Specifically, in the process of the pressing curved knife 410 moving from the separation position to the pressing position, the pressing curved knife 410 gradually approaches the workpiece to be processed 200 on the lower die base 920 and gradually presses the workpiece to be processed 200, so as to bend the workpiece to be processed 200 into a predetermined shape.

[0058] The reset structure 500 is connected between the pressing part 400 and the fixing seat 300, and is used to keep the pressing part 400 in the separated position under the action of the reset force, so that the pressing part 400 can return to the separated position under the traction of the reset structure 500 after each pressing operation is completed, thereby facilitating the next pressing operation.

[0059] The driving part 600 is fixedly connected to the upper die base 910 , and is used for driving the pressing part 400 to rotate from the separation position to the pressing position when the upper die base 910 approaches the lower die base 920 .

[0060] Using the pressing mechanism 10 of the above embodiment, in the process of the upper die seat 910 gradually moving downward to press the lower die seat 920, before the driving part 600 contacts the pressing part 400, the driving part 600 is subjected to other external forces in addition to the reset force of the reset structure 500, and can be kept in the separated position. After the driving part 600 contacts the pressing part 400, as the upper die seat 910 continues to move downward, the driving part 600 overcomes the reset force of the reset structure 500 and drives the pressing part 400 to gradually rotate from the separated position to the pressing position, thereby achieving the pressing and bending molding of the workpiece 200. Therefore, the pressing mechanism 10 of this embodiment abandons the method of setting two curved knives, the main curved knife and the pre-curved knife, in the related art to achieve the bending effect on the workpiece, and only one pressing curved knife is set on the lower die seat to achieve the bending effect on the workpiece, so that the main curved knife does not need to be set on the upper die seat, and then there will be no problem of interference between the main curved knife and other pressing parts on the upper die seat, thereby ensuring the molding effect of the workpiece.

[0061] It should be noted that the above “the reset structure 500 enables the pressing part 400 to remain in the separated position under the action of the reset force” means that the pressing part 400 can remain in the separated position when it is only subjected to the reset force of the reset structure 500 and is not interfered by other external forces.

[0062] In a possible implementation of the present application, Figure 2 and Figure 3 As shown, the pressing mechanism 10 also includes a pivot structure 700, and the pressing part 400 is rotatably arranged on the fixing seat 300 through the pivot structure 700. On the one hand, the pivot structure can ensure the connection stability between the pressing part 400 and the fixing seat 300, and on the other hand, it can also realize the flexible rotation of the pressing part 400.

[0063] Specifically, the fixed seat 300 includes a fixed block 310, an axle seat 330 and a rotating shaft 340. The fixed block 310 is fixedly connected to the lower mold seat 920, and the axle seat 330 is arranged on the fixed block 310; an axle hole is arranged on the pressing part 400, and the rotating shaft 340 is passed through the fixed block 310 and the axle hole, so that the pressing part 400 can rotate relative to the fixed seat 300.

[0064] It should be noted that the above-mentioned fixing block 310 , shaft seat 330 , rotating shaft 340 and shaft hole form a pivot structure 700 .

[0065] In a possible implementation of the present application, Figure 3 As shown, the pressing part 400 has a first side and a second side opposite to each other in the horizontal direction, the pressing knife 410 is arranged on the first side of the pressing part 400, the driving part 600 is located on the second side of the pressing part 400 and is driven and cooperated with the second side of the pressing part 400, and the pivot structure 700 is located between the pressing knife 410 and the driving part 600.

[0066] In the above structure, the pressing part 400 is similar to a "lever structure". The pressing blade 410 is arranged on the first side of the pressing part 400, the driving part 600 is arranged on the second side of the pressing part 400, and the pivot structure 700 is located between the pressing blade 410 and the driving part 600. The second side of the pressing part 400 is pushed by the movement of the driving part 600, so that the first side of the pressing part 400 changes position (moves from the separation position to the pressing position), and the pressing blade 410 changes position. In addition, the reset structure 500 can also be connected to the second side of the pressing part 400, and the reset structure 500 keeps the pressing part 400 in the pressing position under the action of the reset force. Therefore, in this embodiment, the driving part 600 and the reset structure 500 act together on the second side of the pressing part 400, so as to realize the movement of the pressing part 400 between the separation position and the pressing position.

[0067] For example, Figure 7 and Fig. 9 As shown, Figure 7 FIG. 4 shows a schematic structural diagram of the pressing portion 400 in a separated position. Fig. 9 FIG. 4 shows a schematic diagram of the structure when the pressing part 400 is in the pressing position. Figure 7 As shown, when the pressing part 400 is in the separation position, the pressing part 400 is opened under the traction of the reset structure 500, and the pressing knife 410 is away from the workpiece 200. As the upper die seat 910 moves downward, the driving part 600 moves downward, pushing the pressing part 400 to rotate, so that the pressing knife 410 on the pressing part 400 gradually approaches the workpiece 200. When the pressing part 400 moves to the pressing position, the pressing knife 410 presses the workpiece 200 to achieve the pressing and bending effect on the workpiece 200.

[0068] Furthermore, if Figure 3 , Figure 5 , Figure 7 and Fig. 9 As shown, the driving portion 600 includes a first driving block, on which a driving inclined surface 610 and a contact surface 620 are provided. The contact surface 620 is located on the upper side of the driving inclined surface 610. The driving inclined surface 610 gradually inclines toward a side away from the pressing portion 400 from top to bottom. The driving inclined surface 610 is driven to cooperate with the pressing portion 400. When the contact surface 620 contacts the pressing portion 400, the pressing portion 400 is located in the pressing position.

[0069] In the above structure, the arrangement of the driving inclined surface 610 can convert the vertical movement into the horizontal movement. Figure 7 As shown, when the driving part 600 moves downward following the upper die holder 910, the bottom end of the driving inclined surface 610 first contacts the pressing part 400. As the upper die holder 910 continues to move downward, the driving inclined surface 610 gradually pushes the pressing part 400 to the left, so that the pressing part 400 rotates from the separation position to the pressing position, thereby achieving the pressing and bending effect of the workpiece 200 through the mold closing process of the upper die holder 910. When the upper die holder 910 presses the lower die holder 920, the abutting surface 620 can abut the pressing part 400. At this time, the pressing part 400 can be stably in the pressing position to maintain the pressing force on the workpiece 200.

[0070] The specific connection method of the reset structure is described below with reference to the accompanying drawings.

[0071] like Figure 3 and Figure 4As shown, the fixed seat 300 includes a fixed block 310 and a connecting arm 320, the connecting arm 320 is located on the side of the fixed block 310 close to the driving part 600, the first end of the reset structure 500 is connected to the pressing part 400, and the second end of the reset structure 500 is connected to the connecting arm 320; the first end of the reset structure 500 is higher than the pivot structure 700.

[0072] In the above structure, the fixing seat 300 includes a fixing block 310 and a connecting arm 320, and the connecting arm 320 is provided to provide a hanging point for the reset structure 500. In addition, since the first end of the reset structure 500 is higher than the pivot structure 700, the pressing part 400 can be kept in the separated position under the traction of the reset structure 500 when not subjected to other external forces.

[0073] Exemplarily, the reset structure 500 may be a spring, and the two ends of the spring are respectively provided with fixing structures, the first end of the spring is hung on the pressing part 400, and the second end of the spring is hung on the connecting arm 320. The fixing structure may be a hook, a fixing ring, or the like, and it is sufficient to realize the connection between the spring and the pressing part 400 or the connecting arm 320. The specific structure of the fixing structure is not limited in this embodiment.

[0074] Furthermore, in order to ensure the stability of the pressing part 400 when it moves between the separation position and the pressing position, the connecting arm 320 may include a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are spaced apart on one side of the fixed block 310 close to the driving part 600, and the reset structure 500 includes a first reset member and a second reset member, the first reset member connects the first connecting arm and the pressing part 400, and the second reset member connects the second connecting arm and the pressing part 400, and the driving part 600 is arranged between the first connecting arm and the second connecting arm.

[0075] In the above structure, the two connecting arms and the two reset members can make the pressing part 400 more stable when rotating. In addition, a receiving space is formed between the first connecting arm and the second connecting arm, and the driving part 600 provides a movable amount when the driving part moves downward.

[0076] It should be noted that the first connecting arm and the second connecting arm can be integrally formed with the fixing block 310 .

[0077] It should also be noted that both the first reset member and the second reset member can be springs, and two connection points can be set on the pressing part 400, which are respectively used to connect with the first end of the first reset member and the first end of the second reset member.

[0078] In a possible implementation of the present application, Figures 3 to 9As shown, in order to further improve the pressing effect of the workpiece 200 and enrich the bending angles of the workpiece 200, the pressing portion 400 includes a connecting portion 420, a sliding portion 430 and a third restoring member 440.

[0079] Specifically, the sliding portion 430 is slidably disposed on the connecting portion 420 along a vertical direction, and the pressing curved knife 410 is disposed on the sliding portion 430 . When the sliding portion 430 slides, it can drive the pressing curved knife 410 to move synchronously.

[0080] The connecting portion 420 is rotatably connected to the fixing seat 300 , and the connecting portion 420 can also cooperate with the driving portion 600 . The driving portion 600 drives the connecting portion 420 to rotate, which can drive the sliding portion 430 to rotate, thereby driving the pressing curved knife 410 to rotate.

[0081] The sliding part 430 has a pre-tightening position away from the lower mold base 920 and a pressing position close to the lower mold base 920. The third reset member 440 is arranged between the sliding part 430 and the connecting part 420. The third reset member 440 can keep the sliding part 430 in the pre-tightening position under the action of the reset force.

[0082] The pressing mechanism 10 also includes a second driving block 800, which is arranged on the upper mold base 910. The second driving block 800 is used to press-fit with the sliding part 430 after the pressing part 400 moves to the pressing position, so as to move the sliding part 430 from the pre-pressing position to the pressing position.

[0083] By setting the pressing part 400 as a sliding part 430 and a connecting part 420 that can slide relative to each other, the pressing stroke of the upper die base 910 is increased. Specifically, the first stroke of the upper die base 910 is to drive the pressing part 400 as a whole from the separation position to the pressing position through the driving part 600. After the first stroke is completed, the upper die base 910 continues to move downward, so that the second driving block 800 and the sliding part 430 are pressed together, and the sliding part 430 continues to move downward from the pre-pressing position under the push of the second driving block 800 until the upper die base 910 and the lower die base 920 are pressed, and the sliding part 430 moves to the pressing position, which further improves the pressing effect of the workpiece 200 to be processed, and also enriches the bending angle of the workpiece 200 to be processed.

[0084] It should be noted that the lower edge of the second driving block 800 is higher than the lower edge of the driving part 600. In the process of the upper die holder 910 moving downward, the driving part 600 contacts the connecting part 420 first, and drives the pressing part 400 as a whole from the separation position to the pressing position. After the pressing part 400 moves to the pressing position, the second driving block 800 can contact the sliding part 430. As the upper die holder 910 continues to move downward, the second driving block 800 can push the sliding part 430 from the pre-pressing position to the pressing position. In addition, the lower die holder 920 needs to reserve a large enough space to ensure that the driving part 600 will not interfere with the lower die holder 920 in the second stroke of the upper die holder 910.

[0085] It should also be noted that, in some embodiments, the second driving block 800 may also be pressed and matched only with the pressing curved blade 410. Alternatively, in other embodiments, the second driving block 800 may also be pressed and matched with the pressing curved blade 410 and the sliding portion 430.

[0086] Specifically, when the pressing part 400 includes the connecting part 420, the sliding part 430 and the third reset member 440, the connecting part 420 specifically includes a bottom block 421 and a side block 422 arranged at an angle to the bottom block 421, the bottom block 421 is rotatably connected to the fixing seat 300, and the side block 422 is drivingly matched with the driving part 600;

[0087] A sliding guide structure 450 is provided between the sliding part 430 and the side block 422, and the sliding part 430 and the connecting part 420 are slidingly connected through the sliding guide structure 450. The third reset member 440 is provided between the bottom block 421 and the sliding part 430, so as to facilitate keeping the sliding part 430 in the pre-tightened position.

[0088] It should be noted that the sliding guide structure 450 includes a slide rail 451 and a limit block 452. The slide rail 451 can guide the sliding of the sliding part 430. The limit block 452 can limit the position of the sliding part 430. Specifically, the third reset member 440 pushes the sliding part 430 upward under the action of the reset force, and the top of the sliding part 430 is limited by the limit block 452, so that the sliding part 430 is stably maintained in the pre-tightened position.

[0089] Exemplarily, the third restoring member 440 may be a spring.

[0090] The embodiment of the present application further provides a pressing mold 20 , which includes: a lower mold base 920 , an upper mold base 910 and a pressing mechanism 10 (the various parts of the pressing part 400 cannot move relative to each other).

[0091] The lower die base 920 has a placement position for placing the workpiece 200 to be processed; the upper die base 910 is movably arranged above the lower die base 920, and the upper die base 910 has an opening die position separated from the lower die base 920 and a closing die position pressed and matched with the lower die base 920.

[0092] The pressing mechanism 10 is disposed between the upper die base 910 and the lower die base 920 , the driving part 600 is disposed on the upper die base 910 , and the fixing base 300 , the pressing part 400 and the resetting structure 500 are disposed on the lower die base 920 .

[0093] When the upper mold base 910 gradually moves from the mold opening position to the mold closing position, the driving part 600 can cooperate with the pressing part 400 to drive the pressing part 400 to rotate from the separation position to the pressing position to completely press the workpiece 200.

[0094] With the pressing mold 20 of this embodiment, when the upper mold base 910 gradually moves from the mold opening position to the mold closing position, the driving part 600 can be kept in the separation position before the driving part 600 contacts the pressing part 400. After the driving part 600 contacts the pressing part 400, as the upper mold base 910 gradually moves toward the mold closing position, the driving part 600 drives the pressing part 400 to gradually rotate from the separation position to the pressing position, thereby realizing the pressing and bending forming of the workpiece 200.

[0095] like Figures 6 to 9 As shown, the embodiment of the present application further provides another pressing mold 20, which includes an upper mold base 910, an upper mold base 910 and a pressing mechanism 10 (the sliding part 430 of the pressing mechanism 10 can slide on the connecting part 420).

[0096] The lower die base 920 has a placement position for placing the workpiece 200 to be processed; the upper die base 910 is movably arranged above the lower die base 920, and the upper die base 910 has an opening die position separated from the lower die base 920, a first closing die position pre-pressed with the lower die base 920, and a second closing die position pressed and matched with the lower die base 920.

[0097] The pressing mechanism 10 is disposed between the upper die base 910 and the lower die base 920 , the driving part 600 and the second driving block 800 are disposed on the upper die base 910 , and the fixing base 300 , the pressing part 400 and the reset structure 500 are disposed on the lower die base 920 .

[0098] When the upper die holder 910 moves from the mold opening position to the first mold closing position, the driving part 600 can drive and cooperate with the pressing part 400, so that the pressing part 400 can rotate from the separation position to the pressing position. When the upper die holder 910 moves from the first mold closing position to the second mold closing position, the second driving block 800 can press and cooperate with the pressing knife 410 and / or the sliding part 430, so that the sliding part 430 can move from the pre-pressing position to the pressing position, completing the pressing and bending of the workpiece 200.

[0099] The laminating die 20 of the above-mentioned embodiment is applied, and the laminating stroke of the upper die seat 910 is increased by setting the laminating part 400 as a sliding part 430 and a connecting part 420 that can slide relative to each other. Specifically, the first stroke of the upper die seat 910 is to drive the laminating part 400 as a whole from the separation position to the laminating position through the driving part 600. After the first stroke is completed, the upper die seat 910 continues to move downward, so that the second driving block 800 and the sliding part 430 are pressed together, and the sliding part 430 continues to move downward from the pre-pressing position under the push of the second driving block 800 until the upper die seat 910 and the lower die seat 920 are pressed, and the sliding part 430 moves to the pressing position, which further improves the pressing effect of the workpiece 200 to be processed, and also enriches the bending angle of the workpiece 200 to be processed.

[0100] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A pressing mechanism, arranged between an upper die base and a lower die base, and used for pressing and bending a workpiece, characterized in that: include: A fixed seat, fixedly connected to the lower die seat; A pressing part, rotatably disposed on the fixed seat, the pressing part comprises a pressing curved knife, the pressing curved knife is used to press the workpiece to be processed, and the pressing part comprises a pressing position where the pressing curved knife is close to the lower die seat and a separation position where the pressing curved knife is away from the lower die seat; A reset structure, connected between the pressing part and the fixing seat, and used to keep the pressing part in the separation position under the action of the reset force; The driving part is fixedly connected to the upper die base, and is used for driving the pressing part to rotate from the separation position to the pressing position when the upper die base approaches the lower die base.

2. The pressing mechanism according to claim 1, characterized in that: The pressing mechanism further comprises a pivot structure, and the pressing portion is rotatably arranged on the fixing seat via the pivot structure.

3. The pressing mechanism according to claim 2, characterized in that: The fixed seat comprises a fixed block, a shaft seat and a rotating shaft, the fixed block is fixedly connected to the lower die seat, and the shaft seat is arranged on the fixed block; The pressing part is provided with an axial hole, and the rotating shaft is passed through the fixing block and the axial hole; The fixing block, the shaft seat, the rotating shaft and the shaft hole form the pivot structure.

4. The pressing mechanism according to claim 2, characterized in that: The pressing part has a first side and a second side opposite to each other in the horizontal direction, the pressing knife is arranged on the first side of the pressing part, the driving part is located on the second side of the pressing part and is drivingly cooperated with the second side of the pressing part, and the pivoting structure is located between the pressing knife and the driving part.

5. The pressing mechanism according to claim 4, characterized in that: The driving portion includes a first driving block, on which a driving inclined surface and an abutting surface are provided. The abutting surface is located on the upper side of the driving inclined surface. The driving inclined surface gradually inclines toward a side away from the pressing portion in a direction from top to bottom. The driving inclined surface is driven in cooperation with the pressing portion. When the abutting surface abuts against the pressing portion, the pressing portion is located at the pressing position.

6. The pressing mechanism according to claim 4, characterized in that: The fixing seat comprises a fixing block and a connecting arm, wherein the connecting arm is located on a side of the fixing block close to the driving part; The first end of the reset structure is connected to the pressing portion, and the second end of the reset structure is connected to the connecting arm; The first end of the restoring structure is higher than the pivoting structure.

7. The pressing mechanism according to any one of claims 1 to 6, characterized in that: The pressing part further includes a connecting part, a sliding part and a third reset member, wherein the sliding part is slidably arranged on the connecting part along a vertical direction, the connecting part is rotatably connected to the fixing seat, and the connecting part is drivingly matched with the driving part, and the pressing curved knife is arranged on the sliding part; The sliding portion has a pre-pressing position away from the lower die seat and a pressing position close to the lower die seat, and the third reset member is arranged between the sliding portion and the connecting portion, and the third reset member can keep the sliding portion at the pre-pressing position under the action of the reset force; The pressing mechanism also includes a second driving block, which is arranged on the upper mold base. The second driving block is used to press-fit with the pressing knife and / or the sliding part after the pressing part moves to the pressing position, so that the sliding part moves from the pre-pressing position to the pressing position.

8. The pressing mechanism according to claim 7, characterized in that: The connecting part comprises a bottom block and a side block arranged at an angle to the bottom block, the bottom block is rotatably connected to the fixing seat, and the side block is drivingly matched with the driving part; A sliding guide structure is provided between the sliding part and the side block, and the sliding part and the connecting part are slidably connected through the sliding guide structure; The third restoring member is arranged between the bottom block and the sliding portion.

9. A pressing mold, characterized in that: include: The lower die base has a placement position, and the placement position is used to place the workpiece to be processed; An upper die base is movably disposed above the lower die base, and the upper die base has an opening die position separated from the lower die base and a closing die position pressed and matched with the lower die base; A pressing mechanism, arranged between the upper die base and the lower die base, the pressing mechanism being the pressing mechanism according to any one of claims 1 to 6, wherein the driving part is arranged on the upper die base, and the fixing base, the pressing part and the reset structure are arranged on the lower die base; During the process of the upper mold base moving from the mold opening position to the mold closing position, the driving part cooperates with the pressing part to rotate the pressing part from the separation position to the pressing position.

10. A pressing mold, characterized in that: include: The lower die base has a placement position, and the placement position is used to place the workpiece to be processed; An upper die base is movably disposed above the lower die base, the upper die base having an opening die position separated from the lower die base, a first closing die position pre-pressed with the lower die base, and a second closing die position press-fitted with the lower die base; A pressing mechanism, arranged between the upper die base and the lower die base, the pressing mechanism being the pressing mechanism according to any one of claims 7 to 8, wherein the driving part and the second driving block are arranged on the upper die base, and the fixing base, the pressing part and the reset structure are arranged on the lower die base; In the process of the upper mold base moving from the mold opening position to the first mold closing position, the driving part cooperates with the pressing part to make the pressing part rotate from the separation position to the pressing position; During the process of the upper mold base moving from the first mold closing position to the second mold closing position, the second driving block is crimped and cooperated with the pressing curved knife and / or the sliding part to move the sliding part from the pre-pressing position to the pressing position.

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