An eccentric rotary hemming machine

Abstract

The present invention discloses an eccentric rotary hemming machine, comprising a workbench, and further comprising: a die, which is arranged on the workbench and has a concave cavity adapted to the shape of a plate body; a movable block, which contacts the workbench and is movably arranged on the workbench; a spindle, which passes through the movable block and is configured to be rotatable relative to the movable block and movable in a vertical direction, and the spindle is provided with an abutment block that can trigger the movement of the movable block; a bearing member, which is arranged between the spindle and the movable block, and has an outer ring connected to the movable block and an inner ring connected to the spindle, and the inner ring is provided with a through hole for the spindle to pass through and a matching member that matches the abutment block. The present invention provides an eccentric rotary hemming machine, which has a reasonable structural design, can cover the hemming member on the plate body in all directions, has high hemming quality, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of hemming machines, in particular to an eccentric rotary hemming machine. Background Art

[0002] When some plates are used in certain products, they need to be edged with edge wrapping parts. Common plates include metal materials, wood materials, and plastics, while common edge wrapping parts include leather and paper materials. In the field of packaging boxes, metal plates with leather edge wrapping parts are used, and traditional edge wrapping methods mostly use manual pasting of edge wrapping, which is troublesome, time-consuming and labor-intensive, and there are air bubbles between the edge wrapping parts and the plate, resulting in low product quality and unstable edge wrapping quality. As a result, edge wrapping machines that replace manual operations came into being and became more and more popular.

[0003] For example, CN104385686B discloses a hemming machine, which relates to the technical field of hemming equipment for hemming plates, and comprises a workbench for placing hemming pieces and plates, and four pressing plates, namely, a left pressing plate, a right pressing plate, a front pressing plate and a rear pressing plate, respectively arranged on the left side, the right side, the front side and the rear side of the workbench. The four pressing plates can move longitudinally and transversely, and each pressing plate moves up to lift the part on the corresponding side of the hemming piece and flips it upward to form a flipping part, and then moves laterally to the top of the plate to flip the flipping part to the top surface of the plate and smooth it, and then presses down to compact and stick the flipping part to the top surface of the plate.

[0004] The hemming machine of the above scheme can only perform hemming operations on the plate (i.e. the plate body mentioned above) on the four sides of front, back, left and right. When the plate body is irregular in shape, the hemming operation is only performed on the four sides by the pressing plates, and the hemming parts around the plate body cannot be completely covered on the plate body. In this way, the quality of the hemming cannot be guaranteed and its scope of application is also limited. Summary of the invention

[0005] The present invention overcomes the shortcomings of the prior art and provides an eccentric rotary hemming machine with a reasonable structural design. The eccentric rotary hemming machine can cover the hemming pieces on the plate body in all directions, has high hemming quality, and has a wide range of applications.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An eccentric rotary hemming machine comprises a workbench and also includes:

[0008] A concave die is arranged on a workbench and has a concave cavity matching the shape of the plate;

[0009] A movable block, which contacts the workbench and is movably disposed on the workbench;

[0010] A main shaft, which passes through the movable block and is configured to be rotatable relative to the movable block and movable in the vertical direction, and an abutment block that can trigger the movement of the movable block is provided on the main shaft;

[0011] A bearing member is disposed between the main shaft and the movable block, and comprises an outer ring connected to the movable block and an inner ring connected to the main shaft, wherein the inner ring is provided with a through hole for the main shaft to pass through and a matching member for matching with the abutment block;

[0012] A connecting frame, comprising a lower connecting frame that contacts with the workbench and is movably arranged on the workbench and an upper connecting frame connected to the lower connecting frame, wherein the movable block is located in the lower connecting frame and is connected to the lower connecting frame, and a spring plate is connected to at least one side of the outer periphery of the lower connecting frame;

[0013] The sliding template is connected to the upper connection frame and slidably arranged on the concave mold. It has an opening adapted to the shape of the concave cavity. The inner wall of the sliding template at the opening is formed with an extension surface for accommodating the edge wrapping piece.

[0014] Preferably, an inclined surface is provided on the abutment block, and the matching piece is an inclined groove that slidably matches with the inclined surface.

[0015] Preferably, the abutment block is provided with an inclined surface, and the matching piece is a roller that slides with the inclined surface.

[0016] Preferably, a clamping core and a clamping template movable in the vertical direction are provided above the concave die, and the shape of the clamping template is adapted to the concave cavity.

[0017] Preferably, an ejector core is provided in the concave mold, and an ejector cylinder capable of ejecting the ejector core is provided below the workbench.

[0018] Preferably, an adjusting cylinder is provided on one side of the upper connecting frame.

[0019] Preferably, the main shaft is connected to a spline shaft via a connecting sleeve, a bearing is provided outside the connecting sleeve, a rotating shaft is connected to the spline shaft, and the rotating shaft is driven to rotate by a rotating motor.

[0020] Preferably, a mounting frame movable in the vertical direction is provided under the workbench, the spindle is installed on the mounting frame, the bottom of the mounting frame is provided with a lifting motor or a lifting cylinder connected to drive the mounting frame to move, a guide column is provided under the workbench, and a linear bearing or a guide sleeve cooperating with the guide column is provided on the mounting frame.

[0021] Preferably, the extension surface is an inclined surface with an inclination, and a limiting plate installed on the workbench is provided above the sliding template.

[0022] Preferably, a mounting plate is provided above the concave die, and a first driving cylinder connected to the clamping die core and a second driving cylinder connected to the clamping die plate are provided on the mounting plate.

[0023] Beneficial effects of the present invention:

[0024] The structure of the present invention is reasonably designed, and the edge wrapping piece can be wrapped on the plate body in all directions, with high edge wrapping quality and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a workpiece whose hemming is not completed in a specific embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of a workpiece after hemming is completed according to a specific embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of a specific embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the connection structure of the movable block, the connecting frame and the sliding template in a specific embodiment of the present invention Figure 1 ;

[0029] Figure 5 Schematic diagram of the connection structure of the movable block, the connecting frame and the sliding template in a specific embodiment of the present invention Figure 2 ;

[0030] Figure 6 It is a schematic diagram of the connection structure of the main shaft, the bearing member and the movable block according to a specific embodiment of the present invention;

[0031] Figure 7 It is a structural schematic diagram of a bearing member according to a specific embodiment of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the main shaft of a specific embodiment of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of a sliding template according to a specific embodiment of the present invention;

[0034] Fig.10 It is a schematic diagram of the structure of the concave mold according to a specific embodiment of the present invention;

[0035] Fig.11 It is a structural schematic diagram reflecting a pressing mold core and a pressing mold plate according to a specific embodiment of the present invention;

[0036] Fig.12 This is a schematic diagram of the connection structure between the main shaft, the rotating motor and the lifting motor according to a specific embodiment of the present invention;

[0037] Fig.13 It is a schematic diagram of the connection structure between the main shaft and the mounting frame according to a specific embodiment of the present invention;

[0038] Fig.14The figure is a schematic diagram of the connection structure of the main shaft, the spline shaft and the rotating shaft according to a specific embodiment of the present invention.

[0039] In the figure: 100, workpiece; 101, plate; 102, edging piece; 200, workbench; 201, limit plate; 1, die; 11, cavity; 12, ejector core; 13, ejector cylinder; 2, movable block; 3, spindle; 31, abutment block; 311, inclined surface; 32, bearing; 33, spline shaft; 34, rotating shaft; 35, rotating motor; 36, connecting sleeve; 4, bearing piece; 41, outer ring; 42, inner Ring; 421, perforation; 422, fitting; 5, connecting frame; 51, lower connecting frame; 511, spring plate; 52, upper connecting frame; 521, adjusting cylinder; 6, sliding template; 61, opening; 62, extension surface; 7, clamping core; 71, clamping template; 8, mounting frame; 81, lifting motor; 82, guide column; 83, linear bearing; 9, mounting plate; 91, first driving cylinder; 92, second driving cylinder. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Figure 1 FIG. 1 is a schematic diagram of a workpiece 100 according to a specific embodiment of the present invention. The workpiece 100 includes a plate body 101 and an edge wrapping piece 102 pre-attached to the plate body 101. The edge wrapping piece 102 leaves a portion of the plate body 101 in the circumferential direction. The main purpose of the present invention is to wrap the edge wrapping piece 102 in the circumferential direction of the plate body 101 on the plate body 101, thereby completing the edge wrapping operation. Figure 2 The workpiece 100 after hemming is shown, wherein the shape of the plate 101 in the above specific embodiment is only used for specific explanation and description, and the protection scope of the present invention is not limited to the specific shape of the plate 101.

[0042] like Figure 1-14As shown, an eccentric rotary hemming machine includes a workbench 200, and also includes: a die 1, which is arranged on the workbench 200 and has a concave cavity 11 adapted to the shape of a plate body 101; a movable block 2, which contacts with the workbench 200 and is movably arranged on the workbench 200; a spindle 3, which passes through the movable block 2 and is configured to be rotatable relative to the movable block 2 and movable in the vertical direction, and the spindle 3 is provided with an abutment block 31 that can trigger the movement of the movable block 2; a bearing member 4, which is arranged between the spindle 3 and the movable block 2, and has an outer ring 41 connected to the movable block 2 and an inner ring 42 connected to the spindle 3, and the inner ring 42 is provided with a bearing for the spindle 3 A through hole 421 passing through and a matching piece 422 matching with the abutment block 31; a connecting frame 5, which includes a lower connecting frame 51 that contacts with the workbench 200 and is movably arranged on the workbench 200, and an upper connecting frame 52 connected to the lower connecting frame 51, the movable block 2 is located in the lower connecting frame 51 and is connected to the lower connecting frame 51, and a spring plate 511 is connected to at least one side of the outer periphery of the lower connecting frame 51; a sliding template 6, which is connected to the upper connecting frame 52 and is slidably arranged on the die 1, and has an opening 61 adapted to the shape of the cavity 11, and an extension surface 62 for accommodating the edging piece 102 is formed on the inner wall of the sliding template 6 at the opening 61.

[0043] By adopting the above technical solution, in the specific implementation of the present invention, the sliding template 6 and the concave mold 1 are coaxially arranged. Figure 1 The workpiece 100 is placed in the die 1, wherein the circumferential edge member 102 of the plate body 101 is located on the extension surface 62 of the sliding template 6. At this time, the main shaft 3 is driven to rotate, wherein, since the main shaft 3 and the movable block 2 are connected by the bearing member 4, when the main shaft 3 rotates, the movable block 2 does not rotate. Then, while the main shaft 3 rotates, the main shaft 3 is driven to move in the vertical direction. At this time, the abutment block 31 will abut and cooperate with the matching piece 422, so that a certain eccentricity will be generated between the main shaft 3 and the movable block 2, and the main shaft 3 drives the movable block 2 to make an eccentric movement. Since a spring plate 511 is provided, in this specific embodiment, two spring plates 511 are provided and are located on both sides of the lower connecting frame 51. The spring plate 511 mainly prevents the lower connecting frame 51 from rotating. Since the lower connecting frame 51 is connected to the movable block 2, the movable block 2 that is about to make an eccentric movement cannot rotate, but can only make a planar vibration in all directions with the main shaft 3 as the center. Since the connecting frame 5 is connected to the sliding template 6, the movable block 2 will drive the sliding template 6 to move through the connecting frame 5, and the sliding template 6 will cover the edging piece 102 on the plate body 101 from all directions, thus completing the edging operation, with high edging quality and a wide range of applications.

[0044] As an improved specific manner, an inclined surface 311 is provided on the abutting block 31 , and the matching piece 422 is an inclined groove or a roller that is slidably matched with the inclined surface 311 .

[0045] By adopting the above technical solution, a certain eccentricity can be generated between the main shaft 3 and the movable block 2 through the cooperation of the inclined surface 311 and the inclined groove or the roller. The structure is simple and the transmission is stable. In this specific embodiment, the roller setting is adopted to further reduce friction.

[0046] As an improved specific manner, a clamping core 7 and a clamping template 71 which can move in the vertical direction are provided above the concave die 1 , and the shape of the clamping template 71 is adapted to the concave cavity 11 .

[0047] By adopting the above technical solution, after the workpiece 100 is placed in the die 1, the pressing mold core 7 can be moved down to press the plate 101, so that the plate 101 is positioned, which is convenient for the edging member 102 to be wrapped on the plate 101. The outer dimensions of the pressing mold core 7 are smaller than the plate 101, and when the pressing mold core 7 is pressed on the plate 101, there is a space between the pressing mold core 7 and the plate 101 for the edging member 102 to be wrapped on the plate 101. The setting of the pressing template 71 can drive the pressing template 71 to move down after the sliding template 6 completes the edging operation, so as to press the plate 101 that has completed the edging operation (i.e. Figure 2 The workpiece 100 shown in the figure) makes the edging piece 102 and the plate body 101 more firmly adhered to each other, further ensuring the quality of the edging.

[0048] As a specific improved manner, an ejector core 12 is provided in the female mold 1 , and an ejector cylinder 13 for ejecting the ejector core 12 is provided below the workbench 200 .

[0049] By adopting the above technical solution, the ejector core 12 can move in the vertical direction relative to the die 1, and the cavity 11 is formed between the die 1 and the ejector core 12. The setting of the ejector cylinder 13 can eject the plate body 101 after the hemming operation is completed.

[0050] As an improved specific manner, an adjusting cylinder 521 is provided on one side of the upper connecting frame 52 .

[0051] By adopting the above technical solution, the setting of the cylinder 521 is adjusted. When the sliding template 6 completes a round of hemming operation, the cylinder 521 is adjusted to work and drive the connecting frame 5 to move, so that the sliding template 6 is coaxial with the die 1, which is convenient for the next round of hemming action.

[0052] As a specific improved method, the main shaft 3 is connected to the spline shaft 33 through a connecting sleeve 36 , the connecting sleeve 36 is provided with a bearing 32 outside, the spline shaft 33 is connected to the rotating shaft 34 , and the rotating shaft 34 is driven to rotate by a rotating motor 35 .

[0053] By adopting the above technical solution and providing the spline shaft 33 , the main shaft 3 can be rotated by the rotary motor 35 and can also move in the vertical direction.

[0054] As a specific improved method, a mounting frame 8 movable in the vertical direction is provided under the workbench 200, the spindle 3 is installed on the mounting frame 8, and a lifting motor 81 or a lifting cylinder connected to drive the mounting frame 8 to move is provided at the bottom of the mounting frame 8. A guide column 82 is provided under the workbench 200, and a linear bearing 83 or a guide sleeve cooperating with the guide column 82 is provided on the mounting frame 8.

[0055] By adopting the above technical solution, the main shaft 3 can be moved in the vertical direction and move smoothly.

[0056] As an improved specific manner, the extension surface 62 is an inclined surface 311 with an inclination, and a limiting plate 201 installed on the workbench 200 is provided above the sliding template 6 .

[0057] By adopting the above technical solution and the setting of the extension surface 62 of the above solution, the edging member 102 can be well accommodated, so that when the sliding template 6 moves, the edging member 102 can be smoothly covered on the plate body 101, and the setting of the limit plate 201 can prevent the sliding template 6 from jumping upward when it moves.

[0058] As a specific improvement, a mounting plate 9 is provided above the die 1 , and a first driving cylinder 91 connected to the clamping die core 7 and a second driving cylinder 92 connected to the clamping die plate 71 are provided on the mounting plate 9 .

[0059] By adopting the above technical solution, the first driving cylinder 91 can drive the clamping mold core 7 to move in the vertical direction, and the second driving cylinder 92 can drive the clamping template 71 to move in the vertical direction. Such an arrangement has a simple structure and stable transmission.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An eccentric rotary hemming machine, comprising a workbench, characterized in that: Also includes: A concave die is arranged on a workbench and has a concave cavity matching the shape of the plate; A movable block, which contacts the workbench and is movably disposed on the workbench; A main shaft is arranged through the movable block and is configured to be rotatable relative to the movable block and movable in the vertical direction. The main shaft is provided with an abutment block that can trigger the movable block to move. The abutment block is provided with an inclined surface, so that the main shaft is driven to move in the vertical direction while rotating. The abutment block abuts and cooperates with the matching piece, so that an eccentric distance is generated between the main shaft and the movable block, and the main shaft drives the movable block to make an eccentric movement; A bearing member is disposed between the main shaft and the movable block, and comprises an outer ring connected to the movable block and an inner ring connected to the main shaft, wherein the inner ring is provided with a through hole for the main shaft to pass through and a matching member for matching with the abutment block; A connecting frame, comprising a lower connecting frame that contacts with the workbench and is movably arranged on the workbench and an upper connecting frame connected to the lower connecting frame, wherein the movable block is located in the lower connecting frame and is connected to the lower connecting frame, and a spring plate is connected to at least one side of the outer periphery of the lower connecting frame, and the spring plate is directly or indirectly fixedly connected to the workbench; The sliding template is connected to the upper connection frame and slidably arranged on the concave mold. It has an opening adapted to the shape of the concave cavity. The inner wall of the sliding template at the opening is formed with an extension surface for accommodating the edge wrapping piece.

2. The eccentric rotary hemming machine according to claim 1, characterized in that: The matching piece is an inclined groove that is slidably matched with the inclined surface.

3. The eccentric rotary hemming machine according to claim 1, characterized in that: The matching piece is a roller that is slidably matched with the inclined surface.

4. An eccentric rotary hemming machine according to claim 1, 2 or 3, characterized in that: A pressing mold core and a pressing mold plate which can move in the vertical direction are arranged above the concave mold, and the shape of the pressing mold plate is adapted to the concave cavity.

5. The eccentric rotary hemming machine according to claim 4, characterized in that: An ejector core is arranged in the concave die, and an ejector cylinder which can eject the ejector core is arranged under the workbench.

6. The eccentric rotary hemming machine according to claim 4, characterized in that: An adjusting cylinder is arranged on one side of the upper connecting frame.

7. The eccentric rotary hemming machine according to claim 4, characterized in that: The main shaft is connected to a spline shaft through a connecting sleeve, a bearing is arranged outside the connecting sleeve, the spline shaft is connected to a rotating shaft, and the rotating shaft is driven to rotate by a rotating motor.

8. The eccentric rotary hemming machine according to claim 7, characterized in that: A mounting frame movable in the vertical direction is provided under the workbench, the spindle is installed on the mounting frame, a lifting motor or a lifting cylinder connected to drive the mounting frame to move is provided at the bottom of the mounting frame, a guide column is provided under the workbench, and a linear bearing or a guide sleeve cooperating with the guide column is provided on the mounting frame.

9. The eccentric rotary hemming machine according to claim 1, characterized in that: The extension surface is an inclined surface with an inclination, and a limiting plate installed on the workbench is arranged above the sliding template.

10. The eccentric rotary hemming machine according to claim 4, characterized in that: A mounting plate is arranged above the concave die, and a first driving cylinder connected to the pressing die core and a second driving cylinder connected to the pressing die plate are arranged on the mounting plate.

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