Elliptical stretch-forming machine

Abstract

The utility model discloses an ellipse stretch-forming machine which comprises a machine table and four sets of stretching mechanisms, each stretching mechanism is provided with a driver, a guide rail, a sliding table and a stretch-forming die, the drivers and the guide rails are arranged on a base table, the sliding tables are arranged on the guide rails and are in transmission connection with the drivers so that the sliding tables can slide on the guide rails, and the stretch-forming dies are arranged on the sliding tables and are in transmission connection with the drivers. The face, close to the driver, of the stretch-forming die is a first arc-shaped face. The four sets of stretching mechanisms are arranged in the circumferential direction of the center of the surface of the base table, the moving path of the stretch-forming dies passes through the center of the surface of the base table, the four sets of stretch-forming dies are sleeved with the to-be-stretch-formed metal piece, and the driver can drive the stretch-forming dies to move towards the driver so that the to-be-stretch-formed metal piece can be stretched into an oval shape. The stretch-forming die is provided with a limiting mechanism used for fixing the metal piece to be stretch-formed to the stretch-forming die. The elliptical stretch-forming machine can prevent a metal piece from being demolded, and is high in safety coefficient.

Description

Technical Field

[0001] The utility model relates to the technical field of metal shaping equipment, in particular to an elliptical drawing machine. Background Art

[0002] Currently, metal decorations or metal structural parts are all oval in shape. These oval metal parts require a drawing machine. Existing oval drawing machines are prone to causing metal parts to fall out of the mold, resulting in poor forming results. Furthermore, the metal parts may bounce when released from the mold, which is dangerous. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an elliptical drawing machine that can prevent metal parts from being demoulded and has a high safety factor.

[0004] According to the first embodiment of the present invention, an elliptical drawing machine includes:

[0005] abutment;

[0006] Four sets of stretching mechanisms, each of which is provided with a driver, a guide rail, a slide, and a stretching die. The driver and the guide rail are both provided on the base. The slide is provided on the guide rail and is in transmission connection with the driver to slide on the guide rail. The stretching die is provided on the slide, and a surface of the stretching die close to the driver is a first arc-shaped surface.

[0007] Among them, the four groups of stretching mechanisms are arranged along the central circumference of the base surface, the moving path of the stretching die passes through the center of the base surface, the metal part to be stretched is sleeved on the outside of the four groups of stretching dies, and the driver can drive the stretching die to move toward the driver to stretch the metal part to be stretched into an elliptical shape. The stretching die is provided with a limiting mechanism for fixing the metal part to be stretched to the stretching die.

[0008] The elliptical drawing machine according to the embodiment of the utility model has at least the following beneficial effects: four groups of stretching mechanisms are arranged along the central circumference of the base surface, and the stretching mechanism is provided with a driver, a guide rail, a slide and a drawing die. The driver and the guide rail are arranged on the base, the slide is arranged on the guide rail and connected to the driver, the drawing die is arranged on the slide, and a limiting mechanism is also provided on the drawing die. When working, the metal parts to be drawn are put on the outside of the four groups of drawing dies, and then the driver drives the drawing die to pull outward. The four groups of drawing dies are evenly stressed, and cooperate with the limiting mechanism to avoid demolding of the metal parts to be drawn, so the drawing effect is good and the installation coefficient is high.

[0009] According to some embodiments of the present invention, the limiting mechanism is provided with a mounting seat, a limiting member and a first adjusting rod, the mounting seat is fixed to the top of the drawing die, the first adjusting rod is passed through the mounting seat, the limiting member is fixedly connected to the first adjusting rod and can rotate relative to the mounting seat, and the limiting member is provided with a slot for clamping the metal part to be drawn.

[0010] According to some embodiments of the present invention, one end of the slot is a flat surface, and the other end is a second curved surface.

[0011] According to some embodiments of the present invention, an extrusion piece for squeezing and fixing the metal piece to be stretched is provided in the slot, and the limiting piece is provided with a second adjusting rod for connecting and driving the extrusion piece to move.

[0012] According to some embodiments of the present invention, the cross section of the extrusion piece is a third arc-shaped surface, and the inner side of the third arc-shaped surface is used to contact the metal piece to be drawn.

[0013] According to some embodiments of the present invention, the second adjusting rod is a screw rod, and the limiting member is provided with a screw hole for matching the screw rod. The screw hole is located at the end of the limiting member and is connected to the slot.

[0014] According to some embodiments of the present invention, the first adjusting rod is provided with a handle, and the handle is perpendicular to the first adjusting rod.

[0015] According to some embodiments of the present invention, the limiting mechanism is provided with a locking structure, which includes a locking pin and a locking hole. The locking pin is movably provided on the mounting seat along the vertical direction, and the locking hole is provided on the first adjusting rod. The locking hole can follow the first adjusting rod to rotate to a position corresponding to the locking pin, so that the locking pin can be inserted into the locking hole under the action of gravity.

[0016] According to some embodiments of the present invention, the driver is a hydraulic cylinder.

[0017] According to some embodiments of the present invention, the base platform is provided with a detection device for detecting the pulling force of the hydraulic cylinder.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of an elliptical drawing machine according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the limiting mechanism of the elliptical drawing machine is shown.

[0022] Reference numerals:

[0023] Base 1, stretching mechanism 2, driver 3, guide rail 4, slide 5, drawing die 6, limiting mechanism 7, mounting seat 8, limiting member 9, first adjusting rod 10, slot 11, extrusion member 12, second adjusting rod 13, handle 14, locking pin 15. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation 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 cannot be understood as a limitation on the present invention.

[0026] In the description of this utility model, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If the term "first" or "second" is used in a description, it is only used to distinguish technical features and should not be understood to indicate or imply relative importance, implicitly specify the number of the indicated technical features, or implicitly specify the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Currently, metal decorations or metal structural parts are all oval in shape. These oval metal parts require a drawing machine. Existing oval drawing machines are prone to causing metal parts to fall out of the mold, resulting in poor forming results. Furthermore, the metal parts may bounce when released from the mold, which is dangerous.

[0029] In response to the above technical problems, an embodiment of the present utility model proposes an elliptical stretching machine, which includes four groups of circumferentially arranged stretching mechanisms, which evenly stretch metal parts from four directions. The stretching mechanism is also provided with a limiting mechanism for limiting the position of the metal parts. The metal parts can avoid demolding during the stretching process, and the stretching effect is good and the safety factor is high.

[0030] The following is combined with Figure 1 and attached Figure 2 An elliptical drawing machine according to an embodiment of the present invention is described.

[0031] Reference Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the elliptical stretching machine includes a base 1 and a stretching mechanism 2. The stretching mechanism 2 comprises four groups. The four groups of stretching mechanisms 2 are arranged circumferentially along the center of the surface of the base 1. Specifically, the four groups of stretching mechanisms 2 are symmetrically arranged in pairs and located in four directions, namely, the front, rear, left, and right. The four groups of stretching mechanisms 2 evenly stretch the metal piece to be stretched in the four directions, front, rear, left, and right, achieving excellent stretching effect.

[0032] It should be noted that in the embodiment of the present invention, the stretching mechanism 2 includes a driver 3, a guide rail 4, a slide 5, and a drawing die 6. The driver 3 and guide rail 4 are both mounted on a base. The slide 5 is mounted on the guide rail 4 and is in driving connection with the driver 3 to slide on the guide rail 4. The drawing die 6 is mounted on the slide 5. The surface of the drawing die 6 proximal to the driver 3 is a first curved surface, which is used to contact the metal part to be stretched. The four sets of drawing dies 6 of the stretching mechanism 2 cooperate to stretch the metal part to be stretched into an elliptical shape.

[0033] It is understandable that the drawing die 6 is detachably mounted on the slide 5 , and the drawing die 6 can be replaced accordingly according to the actual products produced.

[0034] It is understandable that the driver 3 can be any one of a hydraulic cylinder, a motor, etc., preferably a hydraulic cylinder, which can bear a large load and has high durability.

[0035] In addition, the first curved surfaces of the drawing dies 6 in the front and rear directions are the same, the first curved surfaces of the drawing dies 6 in the left and right directions are the same, and the first curved surfaces of the drawing dies 6 in the front and rear directions are different from the first curved surfaces of the drawing dies 6 in the left and right directions. In this way, the metal part stretched out by the combination is elliptical. If the first curved surfaces of the drawing dies 6 in the front, rear, left and right directions are all the same, the metal part stretched out is circular.

[0036] It is understandable that the guide rail 4 and the slide 5 may be conventional structures, which will not be described in detail here.

[0037] It should be noted that in the embodiment of the present invention, the moving path of the drawing die 6 passes through the center of the surface of the base 1, and the metal parts to be drawn are sleeved on the outside of the four groups of drawing dies 6. The driver 3 can drive the drawing die 6 to move toward the driver 3 to stretch the metal parts to be drawn into an elliptical shape, and the driver 3 drives the drawing die 6 to pull outward.

[0038] It should be noted that, in the embodiment of the present invention, the base 1 is provided with a detection device for detecting the tension of the hydraulic cylinder. The detection device monitors the tension in real time to avoid damage caused by excessive stretching or poor forming effect of the metal part caused by insufficient stretching.

[0039] It should be noted that in the embodiment of the present invention, the drawing die 6 is provided with a limiting mechanism 7 for securing the metal part to be drawn to the drawing die 6. The limiting mechanism 7 comprises a mounting seat 8, a limiting member 9, and a first adjustment rod 10. The mounting seat 8 is fixed to the top of the drawing die 6, and the first adjustment rod 10 is inserted through the mounting seat 8. The limiting member 9 is fixedly connected to the first adjustment rod 10 and can rotate relative to the mounting seat 8. The limiting member 9 is provided with a retaining groove 11 for retaining the metal part to be drawn. When the metal part to be drawn is fitted onto the outside of the drawing die 6, a portion of the metal part is retained within the retaining groove 11, preventing the metal part from being ejected from the die or deviating, thereby effectively improving the quality of the drawing.

[0040] It should be noted that, in the embodiment of the present invention, one end of the slot 11 is a plane, and the other end is a second curved surface. This design allows for a better positioning effect on the metal piece to be pulled, and the metal piece to be pulled is evenly stressed at the position in contact with the plane, and the position in contact with the second curved surface is less likely to shift. An extrusion piece 12 for squeezing and fixing the metal piece to be pulled is provided in the slot 11, and the limiting piece 9 is provided with a second adjusting rod 13 for connecting and driving the extrusion piece 12 to move. The adjustable extrusion piece 12 can enable the limiting mechanism 7 to adapt to metal pieces of different sizes. The cross-section of the extrusion piece 12 is a third curved surface, and the inner side of the third curved surface is used to contact the metal piece to be pulled. The design of the third curved surface can make the fixing effect of the extrusion piece 12 better and prevent the metal piece to be pulled from deviating.

[0041] It should be noted that in the embodiment of the present invention, the second adjusting rod 13 is a screw, and the limiter 9 is provided with a screw hole for matching the screw. The screw hole is located at the end of the limiter 9 and is connected to the slot 11. The extrusion member 12 can be moved by turning the screw.

[0042] It should be noted that in this embodiment of the present invention, the first adjustment rod 10 is provided with a handle 14, which is perpendicular to the first adjustment rod 10. The limiting mechanism 7 is provided with a locking structure, which includes a locking pin 15 and a locking hole. The locking pin 15 is movably mounted vertically on the mounting base 8, and the locking hole is provided in the first adjustment rod 10. The locking hole can rotate with the first adjustment rod 10 to a position corresponding to the locking pin 15, so that the locking pin 15 can be inserted into the locking hole under the action of gravity. To unlock, the locking pin 15 is manually pulled up to disengage the locking hole, and the first adjustment rod 10 is rotated to offset the locking hole and the locking pin 15.

[0043] The working principle of the elliptical drawing machine of the embodiment of the present invention is as follows: the metal parts to be drawn are set on the outside of the four groups of drawing dies 6, and the metal parts to be drawn are clamped into the clamping slot 11 of the limiting mechanism 7. The limiting mechanism 7 is locked by the first adjusting rod 10, and then the driver 3 drives the drawing dies 6 to pull outward. The four groups of drawing dies 6 are evenly stressed and cooperate with the limiting mechanism 7 to prevent the metal parts to be drawn from being demolded. The drawing effect is good and the installation coefficient is high.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An elliptical drawing machine, characterized in that: include: abutment; Four sets of stretching mechanisms, each of which is provided with a driver, a guide rail, a slide, and a stretching die. The driver and the guide rail are both provided on the base. The slide is provided on the guide rail and is in transmission connection with the driver to slide on the guide rail. The stretching die is provided on the slide, and a surface of the stretching die close to the driver is a first arc-shaped surface. Among them, the four groups of stretching mechanisms are arranged along the central circumference of the base surface, the moving path of the stretching die passes through the center of the base surface, the metal part to be stretched is sleeved on the outside of the four groups of stretching dies, and the driver can drive the stretching die to move toward the driver to stretch the metal part to be stretched into an elliptical shape. The stretching die is provided with a limiting mechanism for fixing the metal part to be stretched to the stretching die.

2. An elliptical drawing machine according to claim 1, characterized in that: The limiting mechanism is provided with a mounting seat, a limiting member and a first adjusting rod. The mounting seat is fixed to the top of the drawing die, the first adjusting rod is passed through the mounting seat, the limiting member is fixedly connected to the first adjusting rod and can rotate relative to the mounting seat, and the limiting member is provided with a slot for clamping the metal part to be drawn.

3. An elliptical drawing machine according to claim 2, characterized in that: One end of the slot is a flat surface, and the other end is a second curved surface.

4. An elliptical drawing machine according to claim 2, characterized in that: An extrusion piece for extruding and fixing the metal piece to be stretched is provided in the clamping slot, and a second adjusting rod for connecting and driving the extrusion piece to move is provided on the limiting piece.

5. An elliptical drawing machine according to claim 4, characterized in that: The cross section of the extrusion piece is a third arc-shaped surface, and the inner side of the third arc-shaped surface is used to contact the metal piece to be drawn.

6. An elliptical drawing machine according to claim 4, characterized in that: The second adjusting rod is a screw rod, and the limiting member is provided with a screw hole for matching with the screw rod. The screw hole is located at the end of the limiting member and is connected to the slot.

7. An elliptical drawing machine according to claim 2, characterized in that: The first adjusting rod is provided with a handle, and the handle is perpendicular to the first adjusting rod.

8. An elliptical drawing machine according to claim 2, characterized in that: The limiting mechanism is provided with a locking structure, which includes a locking pin and a locking hole. The locking pin is movably arranged on the mounting seat along the vertical direction, and the locking hole is arranged on the first adjusting rod. The locking hole can rotate with the first adjusting rod to a position corresponding to the locking pin, so that the locking pin can be inserted into the locking hole under the action of gravity.

9. An elliptical drawing machine according to claim 1, characterized in that: The driver is a hydraulic cylinder.

10. An elliptical drawing machine according to claim 9, characterized in that: The base is provided with a detection device for detecting the pulling force of the hydraulic cylinder.

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