A floating hemming mechanism used in hemming mold

Abstract

The present invention discloses a floating hemming mechanism used in an hemming mold, comprising a driving assembly and a pressing assembly arranged on an upper mold base, and a punch, a pre-bending assembly and a wedge assembly arranged on a lower mold base; when in use, the driving assembly is used in conjunction with the wedge assembly and the pre-bending assembly, the pressing assembly is used in conjunction with the pre-bending assembly, the wedge assembly can move obliquely, and the bending assembly can move longitudinally within a gap range. Compared with the prior art, the beneficial effects of the present invention are: 1. This structure can solve the problem that the outer panels of conventional car door and window frames are blocked and cannot be hemmed normally, making the appearance of the car more personalized and diversified. 2. The structure is compact and saves space, the overall structural strength is good, the mechanism is well stressed, and the product hemming is stable. 3. It is convenient for on-site installation and debugging, and convenient for repair and maintenance in the later stage.

Description

Technical Field

[0001] The present invention relates to the technical field of hemming die structures, and in particular to a floating hemming mechanism used in an hemming die. Background Art

[0002] With the development of society, human progress, and the improvement of people's living standards, consumers in the automotive industry are becoming increasingly demanding in terms of the various standards of the cars they buy. In order to continuously meet consumer needs, the automotive industry's processing technology is rapidly updated. Existing hemming technology uses standard hemming mechanisms for hemming.

[0003] However, the above-mentioned existing technology has the following defects when used: 1. The existing hemming technology uses a standard hemming mechanism to mount a pre-bending knife block to pre-bend the product and then retract, and the final pressing knife block presses down to complete the hemming action. However, since some products have edges on all four sides inside the door and window frames, the inner panel assembly components block the outer panel boundaries, and the final pressing knife block cannot be used to press down vertically, so the hemming of this type of product cannot be achieved; 2. Although the hemming of the window frame can be achieved by rolling the window frame, this method requires the door assembly to be placed on a mold and a robot to roll the inside of the window frame. The work efficiency is low and the product boundary size is unstable after rolling. Summary of the Invention

[0004] The object of the present invention is to provide a floating hemming mechanism used in an hemming mold to solve the technical problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A floating hemming mechanism used in an hemming die comprises a driving assembly and a pressing assembly arranged on an upper die base, and a punch, a pre-bending assembly and a wedge assembly arranged on a lower die base;

[0007] The driving assembly includes a driving guide plate fixing seat and a driving guide plate, wherein the driving guide plate fixing seat is longitudinally arranged, and the upper end thereof is connected to the lower end of the upper die seat, and a longitudinally arranged driving guide plate is provided on the right side of the driving guide plate fixing seat, and the lower end surface of the driving guide plate is a first inclined surface;

[0008] The pressing assembly includes a hitting rod and a dead pad, wherein the hitting rod is arranged longitudinally, the upper end of the hitting rod is connected to the lower end of the upper die base, and the lower end of the hitting rod is connected to the dead pad;

[0009] The pre-bending assembly is installed on the wedge assembly, and the pre-bending assembly includes a pre-bending blade block, a guide column, a travel limit washer, and a screw. Two longitudinal guide columns are provided at the lower end of the pre-bending blade block;

[0010] The cam assembly comprises a cam slider, the lower end of which is slidably connected to the lower mold base, and a longitudinal cam guide plate is provided on the left side of its longitudinal end, and a second inclined surface is provided on the upper end of the cam guide plate, the lower end surface of the transverse end of the cam slider is inclined, and an cam return nitrogen spring is provided on both sides of the right end of the transverse end; the upper end surface of the transverse end is provided with two guide post holes, each of which is connected to a spring, and the upper end of each guide post hole is connected to a guide block with a hole, and the guide post passes through the guide block and is inserted into the corresponding guide post hole and is connected to the spring, and there is a gap between the lower end of the pre-bent knife block and the upper end of the guide block, and the driving guide plate is used in conjunction with the cam guide plate;

[0011] When in use, the driving assembly is used in conjunction with the oblique wedge assembly and the pre-bending assembly, the pressing assembly is used in conjunction with the pre-bending assembly, the oblique wedge assembly can move obliquely, and the bending assembly can move longitudinally within the gap range.

[0012] Among them, the first inclined surface is lower on the left and higher on the right.

[0013] The second inclined surface is lower on the left and higher on the right.

[0014] Wherein, a wedge return limit block is provided on the left side of the transverse end of the wedge sliding block.

[0015] Wherein, the two corresponding side ends of the transverse end of the inclined wedge sliding block are both provided with inclined wedge side guide plates.

[0016] The lower end of each guide column is connected to a travel limit washer through a screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This structure can solve the problem that the outer panels of conventional door and window frames are blocked and cannot be normally hemmed, making the car appearance more personalized and diversified.

[0019] 2. The structure is compact and saves space, the overall structural strength is good, the mechanism has good force, and the product edge is stable.

[0020] 3. Easy to install and debug on site, and easy to repair and maintain in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present application;

[0022] Figure 2 This is the first schematic diagram of the internal structure of the embodiment of the present application;

[0023] Figure 3 This is a second schematic diagram of the internal structure of an embodiment of the present application;

[0024] Figure 4 This is the third schematic diagram of the internal structure of the embodiment of the present application;

[0025] Figure 5 This is a schematic structural diagram of the drive assembly according to an embodiment of the present application;

[0026] Figure 6 This is a schematic structural diagram of a press-fit assembly according to an embodiment of the present application;

[0027] Figure 7 This is a first schematic diagram of the structure of the cam assembly according to an embodiment of the present application;

[0028] Figure 8 This is a second schematic diagram of the structure of the cam assembly according to an embodiment of the present application;

[0029] Figure 9 This is a second schematic diagram of the structure of the cam assembly according to an embodiment of the present application;

[0030] Figure 10 This is a schematic structural diagram of the pre-bending assembly according to an embodiment of the present application;

[0031] Figure 11 Schematic diagram of the structural relationship between the drive assembly and the wedge assembly in an embodiment of the present application;

[0032] Figure 12 This is a schematic diagram of the application process;

[0033] In the figure, the upper die base 1, the lower die base 2, the punch 3, the drive assembly 4, the pressing assembly 5, the pre-bending assembly 6, the bevel wedge assembly 7, the lower guide plate 8, the drive guide plate fixing seat 41, the drive guide plate 42, the hitting rod 51, the squatting pad 52, the bevel wedge guide plate 71, the bevel wedge slider 72, the bevel wedge return limit block 73, the bevel wedge side guide plate 74, the bevel wedge return nitrogen spring 75, the guide post hole 76, the guide block 77, the pre-bending knife block 61, the guide block 65, the guide post 62, the limit washer 63, and the screw 64. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0038] See also Figures 1-12 The structure of the embodiment provided by the present invention is shown in FIG.

[0039] This embodiment discloses a floating hemming mechanism used in an hemming die, comprising a driving assembly 4 and a pressing assembly 5 provided on an upper die base 1, and a punch 3, a pre-bending assembly 6, and a wedge assembly 7 provided on a lower die base 2.

[0040] The driving assembly 4 includes a driving guide plate fixing seat 41 and a driving guide plate 42. The driving guide plate fixing seat 41 is longitudinally arranged, and its upper end is connected to the lower end of the upper mold base 1. A longitudinally arranged driving guide plate 42 is arranged on the right side of the driving guide plate fixing seat 41, and the lower end surface of the driving guide plate 42 is a first inclined surface; wherein, the first inclined surface is lower on the left and higher on the right.

[0041] The pressing assembly 5 includes a driving rod 51 and a dead pad 52. The driving rod 51 is longitudinally arranged, and its upper end is connected to the lower end of the upper die base 1, and the lower end of the driving rod 51 is connected to the dead pad 52.

[0042] The pre-bending assembly 6 is mounted on the wedge assembly 7. The pre-bending assembly 6 includes a pre-bending blade block 61, a guide post 62, a travel limit washer 63, and a screw 64. Two longitudinal guide posts 62 are provided at the lower end of the pre-bending blade block 61.

[0043] The cam 72 is fixed to the left of the upper and lower parts of the vehicle, and the cam 72 is fixed to the upper and lower parts of the vehicle. The cam 72 is fixed to the lower part of the vehicle, and the cam 72 is fixed to the vehicle body 70. The cam 72 is fixed to the vehicle body 70 with a second inclined surface.

[0044] When in use, the driving assembly 4 is used in conjunction with the inclined wedge assembly 7 and the pre-bending assembly 6, the pressing assembly 5 is used in conjunction with the pre-bending assembly 6, the inclined wedge assembly 7 can move obliquely, and the bending assembly can move longitudinally within the gap range.

[0045] In a preferred embodiment, a wedge return limit block 73 is provided on the left side of the transverse end of the wedge slider 72 .

[0046] In a preferred embodiment, the two corresponding side ends of the lateral end of the inclined wedge slider 72 are both provided with inclined wedge side guide plates 74 .

[0047] In a preferred embodiment, the lower end of each guide post 62 is connected to a travel limit washer 63 via a screw 64 .

[0048] Working principle:

[0049] During the mold production process, the press slider moves downward, driving the upper mold as a whole to move downward, thereby driving the drive assembly 4 and the pressing assembly 5 to move downward; until the drive guide plate contacts the inclined surface of the wedge guide plate, at which time the wedge assembly 7 begins to move along the direction of the lower guide plate 8; then the drive assembly 4 continues to press down until the pre-bending is completed; the press slider continues to move downward until the dead pad 52 of the pressing assembly 5 contacts the pre-bending knife block 61, and starts pressing, and continues to move downward 3mm to complete the pressing of the workpiece. At this time, the mold is completely closed.

[0050] The mold is opened, and the upper mold drives the driving assembly 4 and the pressing assembly 5 to move upward. The pre-bending assembly 6 wants to move upward under the action of the spring until the limit washer 63 contacts the limit in the guide column hole 76. Then, the driving assembly 4 continues to move upward, and the wedge assembly 7 begins to reset under the action of the wedge return nitrogen spring until it resets. At this time, the wedge return limit block 73 collides with the wedge return limit platform of the lower mold base, completing the return stroke, and then the upper mold continues to move upward until the mold is opened.

[0051] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating hemming mechanism used in an hemming mold, characterized in that: It includes a driving assembly and a pressing assembly arranged on the upper die base, and a punch, a pre-bending assembly and a wedge assembly arranged on the lower die base; The driving assembly includes a driving guide plate fixing seat and a driving guide plate, wherein the driving guide plate fixing seat is longitudinally arranged, and the upper end thereof is connected to the lower end of the upper die seat, and a longitudinally arranged driving guide plate is provided on the right side of the driving guide plate fixing seat, and the lower end surface of the driving guide plate is a first inclined surface; The pressing assembly includes a hitting rod and a dead pad, wherein the hitting rod is arranged longitudinally, the upper end of the hitting rod is connected to the lower end of the upper die base, and the lower end of the hitting rod is connected to the dead pad; The pre-bending assembly is installed on the wedge assembly, and the pre-bending assembly includes a pre-bending blade block, a guide column, a travel limit washer, and a screw. Two longitudinal guide columns are provided at the lower end of the pre-bending blade block; The cam assembly comprises a cam slider, the lower end of which is slidably connected to the lower mold base, and a longitudinal cam guide plate is provided on the left side of its longitudinal end, and a second inclined surface is provided on the upper end of the cam guide plate, the lower end surface of the transverse end of the cam slider is inclined, and an cam return nitrogen spring is provided on both sides of the right end of the transverse end; the upper end surface of the transverse end is provided with two guide post holes, each of which is connected to a spring, and the upper end of each guide post hole is connected to a guide block with a hole, and the guide post passes through the guide block and is inserted into the corresponding guide post hole and is connected to the spring, and there is a gap between the lower end of the pre-bent knife block and the upper end of the guide block, and the driving guide plate is used in conjunction with the cam guide plate; When in use, the driving assembly is used in conjunction with the oblique wedge assembly and the pre-bending assembly, and the pressing assembly is used in conjunction with the pre-bending assembly. The oblique wedge assembly can move obliquely, and the pre-bending assembly can move longitudinally within the gap range. The first inclined surface is lower on the left and higher on the right, and the second inclined surface is lower on the left and higher on the right.

2. The floating hemming mechanism used in an hemming mold according to claim 1, characterized in that: A wedge return limit block is provided on the left side of the transverse end of the wedge sliding block.

3. The floating hemming mechanism used in an hemming mold according to claim 1, characterized in that: The two corresponding side ends of the transverse end of the inclined wedge sliding block are both provided with inclined wedge side guide plates.

4. The floating hemming mechanism used in an hemming mold according to claim 1, characterized in that: The lower end of each guide post is connected to a travel limit washer by a screw.

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