A parts lifting device for cold heading machine

Abstract

The present invention relates to a part lifting device for a cold heading machine, comprising a triangular bracket, a fixed bracket, a cylinder, a clamp and an electrical control unit, characterized in that the triangular bracket is fixed on a die cavity of the cold heading machine, one end of the triangular bracket is provided with a first connecting hole, one end of the fixed bracket is provided with a second connecting hole, a bolt passes through the first connecting hole and the second connecting hole to connect the triangular bracket and the fixed bracket, the cylinder is installed on the fixed bracket through a connecting piece and a hoop, and one end of the cylinder is connected to a piston rod, the clamp is installed on one end of the piston rod and moves up and down with the piston rod, the rotation angle of the main shaft of the cold heading machine is read by the electrical control unit, and the cylinder is controlled to move by an electromagnetic valve to support the parts, thereby preventing the parts from falling off and improving the stability and clamping effect of the parts after cold heading. The device is suitable for the automobile parts production line of the cold heading machine.

Description

Technical Field

[0001] The invention relates to the field of parts of metal cold heading machines, and in particular to a parts lifting device for cold heading machines. Background Art

[0002] Cold heading machine is a kind of mechanical equipment widely used in the field of metal forming. It is particularly suitable for the production of various metal parts. It plastically deforms the metal wire in the mold by applying pressure to form the required part shape. Cold heading machine plays an important role in the fields of automobile manufacturing and so on due to its high efficiency, high precision and low cost.

[0003] In the process of cold heading machine processing new energy vehicle parts, the parts usually need to meet strict size and shape requirements. However, when producing parts with certain special shapes, especially parts with stepped shapes, long overall lengths and large ends, the mold cavity cannot contact the part shape well, and the end is heavy. As a result, the end of the part falls after being pushed out of the die and cannot be stably clamped by the clamp, or the end of the part shakes severely during the clamping and transportation process, resulting in the part falling off, the clamping and transportation failing, and the production cannot be carried out, which seriously affects the production efficiency and the quality of the parts.

[0004] Therefore, based on the above-mentioned problems and shortcomings of the prior art, a part lifting device for a cold heading machine is proposed to improve the stability and clamping effect of the parts after cold heading, thereby improving production efficiency. Summary of the invention

[0005] In order to solve the shortcomings of the prior art, the present invention proposes a part lifting device for a cold heading machine, which can support the parts during the cold heading process of the parts and use auxiliary clamps to clamp the parts to prevent the parts from falling. This device can adapt to the cold heading production of various parts, and is particularly suitable for the automotive parts production line of the cold heading machine.

[0006] To achieve the above objectives, the technical solutions adopted by the present invention include:

[0007] A parts lifting device for a cold heading machine comprises a triangular bracket, a fixed bracket, a cylinder, a clamp and an electrical control unit, wherein:

[0008] The triangular bracket is fixed on the concave die cavity of the cold heading machine, and one end of the triangular bracket is provided with a first connecting hole;

[0009] A second connecting hole is provided at one end of the fixing bracket, and a bolt passes through the first connecting hole and the second connecting hole to connect the triangular bracket and the fixing bracket;

[0010] The cylinder is mounted on the fixed bracket via a connecting plate and a hoop, and one end of the cylinder is connected to the piston rod;

[0011] The clamp is installed at one end of the piston rod and moves up and down with the piston rod;

[0012] The electrical control unit reads the rotation angle of the cold heading machine main shaft and controls the cylinder movement through the solenoid valve.

[0013] Furthermore, a third connecting hole is provided at one end of the fixing bracket, and the third connecting hole is spaced apart from the second connecting hole by a preset distance, and the connection position of the triangular bracket and the fixing bracket is changed by cooperating with the first connecting hole and the third connecting hole.

[0014] Furthermore, symmetrical through holes are respectively provided on both sides of the clamp, and the roller is installed on the clamp through the through holes.

[0015] Optionally, a groove is provided on the roller.

[0016] Further, the electrical control unit reads that the rotation angle of the cold heading machine spindle is 280 degrees, and inflates the cylinder through the solenoid valve;

[0017] The electrical control unit reads that the rotation angle of the cold heading machine main shaft is 320 degrees, and reversely inflates the cylinder through the solenoid valve.

[0018] Furthermore, the electrical control unit includes a PLC controller and a sensor connected to the PLC controller, and the sensor is used to read the rotation angle of the cold heading machine spindle.

[0019] Furthermore, the sensor is a displacement sensor.

[0020] Furthermore, the cylinder is a double-rod cylinder, the number of the piston rods corresponds to that of the double-rod cylinder, and both ends of the double-rod cylinder are respectively connected to two piston rods.

[0021] The beneficial effects of the present invention are:

[0022] By adopting the cold heading machine part lifting device of the present invention, the rotation angle of the cold heading machine main shaft is read through the electrical control unit, and the cylinder action is controlled by the solenoid valve, so that the cylinder drives the piston rod and the clamp to move up and down. When the part is pushed out of the die, the part is supported, and the auxiliary clamp clamps the part to prevent the part from falling, thereby improving the stability and clamping effect of the part after cold heading. At the same time, an optional connecting hole is provided on the fixed bracket, and the relative position between the triangular bracket and the fixed bracket can be adjusted, which can easily adapt to parts of different lengths and shapes. Therefore, it is particularly suitable for the automotive parts production line of the cold heading machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1Schematic diagram of special-shaped parts provided for embodiments of the present application;

[0024] Figure 2 A first stereoscopic schematic diagram of a part lifting device for a cold heading machine provided in an embodiment of the present application;

[0025] Figure 3 A second stereoscopic schematic diagram of a part lifting device for a cold heading machine provided in an embodiment of the present application; Description of the figure numbers: 1-part, 2-clamp, 3-roller, 4-cylinder, 5-hoop, 6-connecting plate, 7-fixed bracket, 8-bolt, 9-triangular bracket, 10-die cavity. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and 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 only used to explain the present application, and cannot be interpreted as limiting the present invention.

[0027] Those skilled in the art can understand that, unless otherwise stated, the singular forms "one", "an", "said" and "the" used herein may also include plural forms, and the "first", "second", etc., are only used to distinguish and define objects for the purpose of introducing the scheme clearly, and do not limit the objects themselves. Of course, the objects defined by "first" and "second" may be the same terminal, device, user, etc., or the same type of terminal, device and user. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0028] In addition, it should be understood that in the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c can be single or multiple.

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 The schematic diagram of part 1 produced by cold heading is shown. Part 1 has a special shape. Its overall shape is a step shape. The end of the part is larger and the part rod connected to the end of the part has a longer size. When part 1 is ejected from the mold after cold heading, the inner cavity of the mold cannot contact the part shape well, and the end is heavy. As a result, after part 1 is pushed out of the die, the end falls and cannot be stably clamped by the clamp, or the end of the part shakes severely during the clamping and transportation process, and the clamping fails.

[0031] Therefore, the cold heading machine parts lifting device is mainly used in the production process of the above-mentioned special-shaped parts 1 to provide stable support to prevent the end of the part 1 from falling or shaking and falling when it is pushed out of the mold after cold heading.

[0032] The cold heading machine parts lifting device comprises a triangular bracket 9, a fixed bracket 7, a cylinder 4, a clamp 2, a roller 3 and an electrical control unit.

[0033] The triangular bracket 9 is fixed on the female die cavity 10 of the cold heading machine and is provided with a first connecting hole;

[0034] A second connecting hole and a third connecting hole are provided at one end of the fixed bracket 7, and the second connecting hole and the third connecting hole are spaced a predetermined distance apart. The fixed bracket 7 is connected to the first connecting hole of the triangular bracket 9 through the second connecting hole by a bolt 8, or is connected to the first connecting hole of the triangular bracket 9 through the third connecting hole by a bolt 8. By selecting different connecting holes to connect with the triangular bracket 9, the relative position between the two can be adjusted to adapt to parts of different lengths.

[0035] The cylinder 4 is mounted on the fixed bracket 7 through a connecting piece 6 and a hoop 5, and one end of the cylinder 4 is connected to a piston rod. The cylinder 4 is a double-rod cylinder, the number of the piston rods corresponds to that of the double-rod cylinder, and the two ends of the double-rod cylinder are respectively connected to two piston rods;

[0036] The clamp 2 is installed at one end of the piston rod and moves up and down with the piston rod. Symmetrical through holes are respectively provided on both sides of the clamp 2. The roller 3 is installed on the clamp 2 through the through holes, and a groove is provided on the roller 3.

[0037] The electrical control unit reads the rotation angle of the cold heading machine spindle and controls the action of the cylinder 4 through the solenoid valve, wherein the electrical control unit includes a PLC controller and a displacement sensor connected to the PLC controller, and the displacement sensor is used to read the rotation angle of the cold heading machine spindle.

[0038] Specifically, during the operation of the cold heading machine, the cold heading machine punch and the cold heading machine die complete the processing of part 1 through extrusion. When the punch and the die are at the farthest position, the spindle angle is 0 degrees, and the punch moves forward. When the punch and the die are at the closest distance, the spindle angle is 180 degrees. The punch moves backward. When the punch returns to the farthest position from the die again, the spindle angle is 360 degrees. The displacement of the punch is read at all times by the displacement sensor, and the spindle angle is calculated by the PLC and the corresponding control cylinder 4 action is performed.

[0039] Therefore, when the spindle angle of the cold heading machine exceeds 180 degrees, part 1 is processed and gradually ejected from the die. When the spindle angle of the cold heading machine is 280 degrees, the PLC inflates the cylinder 4 based on the solenoid valve, so that the cylinder 4 drives the piston rod to move upward, thereby moving the clamp 2 and the roller 3 upward. When the spindle angle is 300 degrees, it reaches the predetermined position, such as Figure 2 As shown, after the part 1 is pushed out of the die, the clamp 2 clamps the part rod, and through the groove on the roller 3, the friction between the part rod and the roller 3 is reduced, making the clamping of the clamp 2 more stable.

[0040] When the spindle angle of the cold heading machine is within the range of 320-340 degrees, the PLC reversely inflates the cylinder 4 based on the solenoid valve, so that the piston rod drives the clamp 2 and the roller 3 to move downward to the lowest position, such as Figure 3 As shown, at the same time, the clamp holds part 1 for transportation, and the piston rod is always in the lowest position before the next operating cycle reaches 280 degrees.

[0041] Therefore, the cold heading machine part lifting device of the present invention is adopted, the rotation angle of the cold heading machine spindle is read by the electrical control unit, and the action of the cylinder 4 is controlled by the solenoid valve, so that the cylinder 4 drives the piston rod and the clamp 2 to move up and down. When the part 1 is pushed out of the die, the part 1 is supported, and the auxiliary clamp clamps the part 1 to prevent the part 1 from falling. At the same time, an optional connecting hole is provided on the fixed bracket 7, and the relative position between the triangular bracket 9 and the fixed bracket 7 can be adjusted, which can easily adapt to parts 1 of different lengths and shapes. Therefore, it is particularly suitable for the automotive parts production line of the cold heading machine.

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A parts lifting device for a cold heading machine, comprising a triangular bracket, a fixed bracket, a cylinder, a clamp and an electrical control unit, characterized in that: The triangular bracket is fixed on the concave die cavity of the cold heading machine, and one end of the triangular bracket is provided with a first connecting hole; A second connecting hole is provided at one end of the fixing bracket, and a bolt passes through the first connecting hole and the second connecting hole to connect the triangular bracket and the fixing bracket; The cylinder is mounted on the fixed bracket via a connecting plate and a hoop, and one end of the cylinder is connected to the piston rod; The clamp is installed at one end of the piston rod and moves up and down with the piston rod; The electrical control unit reads the rotation angle of the cold heading machine main shaft and controls the cylinder movement through the solenoid valve.

2. The device according to claim 1, characterized in that A third connection hole is further provided at one end of the fixing bracket. The third connection hole is spaced apart from the second connection hole by a preset distance. The connection position of the triangular bracket and the fixing bracket can be changed by cooperating with the third connection hole.

3. The device according to claim 1 or 2, characterized in that Symmetrical through holes are respectively provided on both sides of the clamp, and the roller is installed on the clamp through the through holes.

4. The device according to claim 3, characterized in that The roller is provided with a groove.

5. The device according to claim 1 or 2, characterized in that: The electrical control unit reads that the rotation angle of the cold heading machine spindle is 280 degrees, and inflates the cylinder through the solenoid valve; The electrical control unit reads that the rotation angle of the cold heading machine spindle is 320 degrees, and reversely inflates the cylinder through the solenoid valve.

6. The device according to claim 1, characterized in that The electrical control unit includes a PLC controller and a sensor connected to the PLC controller, and the sensor is used to read the rotation angle of the cold heading machine spindle.

7. The device according to claim 6, characterized in that The sensor is a displacement sensor.

8. The device according to claim 1, characterized in that The cylinder is a double-rod cylinder, the number of the piston rods corresponds to that of the double-rod cylinder, and both ends of the double-rod cylinder are respectively connected to two piston rods.

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