In-mold knocking device of cold header

Abstract

The embodiment of the invention relates to the technical field of new energy automobile part production, and discloses a cold header in-die knocking device which is composed of a first female die sleeve and a second female die sleeve, and a punching rod, a cavity position for containing a part and a marble B used for preventing the part from moving are arranged in the first female die sleeve; a cavity structure combined with an ejector pipe on the cold header is arranged in the second female die sleeve, and a sliding heavy punch is further arranged in the cavity and located on the left side of the ejector pipe. When the ejection pipe moves to the extreme position of the leftmost end, the left end face of the ejection pipe makes contact with the A plane of the second female die sleeve. A spring is arranged in the second female die sleeve, the two ends of the spring are connected with the sliding heavy punch and the left end face of the ejection pipe respectively, and the spring is arranged on a pipe of the sliding heavy punch in a sleeving mode. By means of the device, when some aluminum alloy parts in special shapes are produced on a cold header, a circle of pits are rapidly printed on the small end faces of the aluminum alloy parts and used for marking and recognizing the parts.

Description

Technical Field

[0001] The invention relates to the technical field of new energy automobile parts production, and in particular to an in-mold knocking device of a cold heading machine. Background Art

[0002] Some core functional parts in new energy vehicles are produced using the cold heading process. When the cold heading machine produces certain aluminum alloy parts of special shapes, there is a circle of pits on the small head end face, which is used as a mark to identify the parts. In the production process of the cold heading machine, after the parts have been cold headed at several stations, the basic shape is formed. In the mold of the last station, the ejector punch needs to hit the part with a certain speed and force, so that the head of the mold punch protrudes and embeds into the pit of the part, forming the final required pit mark on the small head end face of the part. At present, no special device has been found on the cold heading machine to better deal with this problem.

[0003] Therefore, it is a technical problem to be solved urgently by those skilled in the art to propose a cold heading machine in-mold knocking device that can process the required marks on the surface of parts. Summary of the invention

[0004] The purpose of the scheme of the present application is to use a specially designed knocking device to process the required marks on the surface of the part, and the device can adapt to the cold heading production of various parts.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an in-mold knocking device for a cold heading machine, the method comprising:

[0007] It is composed of a first die sleeve 6 and a second die sleeve 15. The first die sleeve 6 is provided with a punch 2, a cavity for placing the part 3 and a marble B4 for blocking the movement of the part 3. The second die sleeve 15 is provided with a cavity structure combined with an ejector tube 11 on the cold heading machine. A sliding weight 10 is also provided in the cavity, located on the left side of the ejector tube 11.

[0008] When the ejector tube 11 moves to the extreme left position, the left end surface of the ejector tube 11 contacts the A plane 12 of the second die sleeve 15;

[0009] The two ends of the spring 5 are respectively connected to the left end surface of the sliding weight 10 and the ejection tube 11, and the spring 5 is sleeved on the tube of the sliding weight.

[0010] Preferably, the first die sleeve 6 and the second die sleeve 15 have smooth hollow structures inside.

[0011] Preferably, the outer surface of the sliding weight 10 is provided with an annular groove 7 and an annular groove 8, and the second die sleeve 15 is provided with a marble A9 inside.

[0012] Preferably, when the punch rod 2 is pushed to a position close to the front end, the annular groove 7 of the sliding weight 10 is stuck by the steel ball of the marble A9, the sliding weight 10 stops moving, the ejector tube 11 is still moving from right to left, the spring 5 is compressed, and when the right end of the sliding weight 10 contacts the left end surface of the ejector tube 11, the ejector tube 11 applies a force to the sliding weight 10 by the force of the marble A9 that cannot stop the movement of the sliding weight 10, the steel ball of the marble A9 retracts, and the sliding weight 10 pops out to the left under the push of the compressed and stored spring 5, pushing the punch rod 2 to the left.

[0013] Preferably, the head of the marble A9 is in the annular groove 8 of the sliding weight, and the marble A9 does not contact the sliding weight 10 and does not affect the left and right movement of the sliding weight 10.

[0014] Preferably, the head of the marble A9 and the marble B4 is a smooth steel ball, and a spring is arranged at the back to push the steel ball. In a free state, a part of the steel ball remains exposed, and when pressure is applied to the steel ball, the steel ball will retract.

[0015] Preferably, the punch rod 2 and the sliding weight 10 are connected together by brazing, and move left and right as a whole. The leftmost end position of the punch rod 2 is when the punch rod tail plane contacts the B plane 1.

[0016] Preferably, the front end surface of the punch rod 2 is provided with a specific sharp shape for striking out the desired marks on the parts.

[0017] Preferably, a friction block 14 is further provided inside the second die sleeve 15 to generate friction with the surface of the ejector tube 11 so that the left-right movement of the ejector tube 11 is stable.

[0018] The device of the present invention can realize that when certain aluminum alloy parts of special shapes are produced on a cold heading machine, a circle of pits can be quickly printed on the small head end surface of the aluminum alloy part for marking and identifying the part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0020] Figure 1 It is a structural schematic diagram of the in-mold knocking device of the cold heading machine of the present invention;

[0021] Figure 2 This is a schematic diagram of the sliding weight structure of the present invention;

[0022] Figure 3This is a schematic diagram of the structure of the first die sleeve of the present invention;

[0023] Figure 4 It is a schematic diagram of the punch structure of the present invention.

[0024] Figure 1 In the figure, 1 is the B plane, 2 is the punch, 3 is the part, 4 is the marble B, 5 is the spring, 6 is the first die sleeve, 7 is the annular groove, 8 is the annular groove, 9 is the marble A, 10 is the sliding weight, 11 is the ejector tube, 12 is the A plane, 13 is the marble, 14 is the friction block, and 15 is the second die sleeve. DETAILED DESCRIPTION

[0025] 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 application.

[0026] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of 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.

[0027] In order to make the objectives, technical solutions and advantages of the present application more clear, the specific implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-4 As shown, a cold heading machine die knocking device in the first embodiment of the present invention is composed of two die sleeves, the two die sleeves are the first die sleeve 6 and the second die sleeve 15, the interior of the two die sleeves is a smooth cavity structure, and the inner diameter size is precise. Among them, the first die sleeve 6 is provided with a punch rod 2, a cavity for placing the part 3, and a marble B4 for blocking the movement of the part 3. The second die sleeve 15 is provided with a cavity structure combined with the ejector tube 11 on the cold heading machine, and a sliding weight 10 is also provided in the cavity, located on the left side of the ejector tube 11. The outer surface of the sliding weight 10 is provided with an annular groove 7 and an annular groove 8, and the hammer head and hammer rod of the sliding weight 10 are provided with an annular groove, and a spring 5 is provided inside the annular groove. The second die sleeve 15 is also provided with a friction block 14 that generates friction with the surface of the ejector tube 11, so that the left and right movement of the ejector tube 11 is stable, and a marble A9 for stabilizing the sliding weight 10.

[0029] The ejector tube 11 is a standard mold on the cold heading machine. It reciprocates left and right under the action of the cold heading machine. The ejector tube 11 has a hole in the middle to allow air to circulate at both ends during the left and right movement to keep the air pressure at both ends consistent. When the ejector tube 11 moves to the extreme left position, the left end surface of the ejector tube 11 contacts the A plane 12 of the second die sleeve 15.

[0030] The ejector tube 11 pushes the sliding weight 10 to reciprocate left and right in the mold cavity. The left and right movement of the ejector tube 11 is driven by the mechanical mechanism of the cold heading machine. The sliding weight 10 is pushed by the spring 5 and the ejector tube 11 and can move in the left and right directions in the device. After the sliding weight 10 moves, it has a certain inertial kinetic energy and can realize the action function of knocking. The sliding weight 10 is fixedly connected to the punch rod 2.

[0031] The two ends of the spring 5 are connected to the left end surface of the sliding weight 10 and the ejection tube 11 respectively. The spring 5 is sleeved on the tube of the sliding weight, which can keep the spring in a working state and play the role of the spring well.

[0032] The friction block 14 is installed in the second die sleeve 15, and its function is to generate friction with the surface of the ejector tube 11, so that the left and right movement of the ejector tube is stable and will not move freely in the left and right directions.

[0033] The marble A / B is a standard product, with a smooth steel ball at the head and a spring behind it to push the steel ball. In the free state, the steel ball remains partially exposed. When pressure is applied to the steel ball, it will retract.

[0034] Preferably, the punch rod 2 and the sliding weight 10 are connected together by brazing and move left and right as a whole. The leftmost end position of the punch rod 2 is that the punch rod tail plane contacts the B plane 1.

[0035] The front end surface of the punch rod 2 is processed with a sharp annular shape for knocking out an annular mark on the part.

[0036] The working principle of the device is:

[0037] The normal operating speed of a common cold forging machine is 40-100 working cycles / minute. During operation, the cold forging machine runs continuously to extrude the product shape. Figure 1 After the cold heading station die is shown, the spherical protrusion of the marble blocks the part in the first die sleeve. When the punch part of the cold heading machine completes the cold heading extrusion action of other stations, it begins to move away from the die.

[0038] At this time, the die ejection mechanism starts to move, and the mechanism is located at the rear end position ( Figure 1The left end is the front end, and the right end is the rear end). In this process, the ejector tube 11 pushes the sliding weight 10, the punch rod 2, the product part 3, etc. to move from right to left.

[0039] When the punch 2 is pushed to the position close to the front end, the annular groove 7 of the sliding weight 10 is stuck by the steel ball of the marble A9, and the sliding weight 10 stops moving. However, at this moment, the ejector tube 11 is still moving from right to left, causing the spring 5 to be compressed and gradually generating a large elastic force. When the right end of the sliding weight 10 contacts the surface of the left end of the ejector tube 11, the ejector tube 11 applies a large thrust to the sliding weight 10. The force of the marble A9 cannot stop the movement of the sliding weight 10. The steel ball of the marble A9 retracts. The sliding weight 10 is pushed to the left by the compressed spring 5, and the punch 2 is pushed to the left by a certain distance (about 10 mm). During this process, the head of the marble A9 is in the annular groove 8 of the sliding weight, and the marble A9 does not contact the sliding weight 10, which does not affect the left and right movement of the sliding weight 10.

[0040] At this moment, due to the inertia of the combination of the sliding weight 10 and the punch 2, under the thrust of the spring 5, the surface of the part 3 is hit at a high speed, and a ring-shaped dent is produced thereon, thus achieving the manufacturing purpose. Due to the action of the marble B4, the part 3 is stuck inside the first die sleeve 6, so the part bears a great impact force during the impact, ensuring the effect of producing a dent by the impact.

[0041] The ejector tube 11 continues to move, and the punch 2 exerts a large thrust on the product part under the push of the ejector tube 11, causing the marble B4 to be unable to block it and the product part to move to the left. Until the punch tail plane contacts the B plane 1, the ejector tube 11 also reaches the leftmost position. At this moment, the part 3 is pushed out of the first die sleeve 6 by the punch 2 and falls onto the product conveyor belt due to gravity.

[0042] When a new product is pushed by the punch into the die from left to right, the moving components of the entire device move from left to right, and this cycle repeats, thus achieving the purpose of continuous production.

[0043] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A cold heading machine in-mold knocking device, characterized in that: The device is composed of a first die sleeve (6) and a second die sleeve (15). The first die sleeve (6) is provided with a punch (2), a cavity for placing a part (3), and a marble B (4) for blocking the movement of the part (3). The second die sleeve (15) is provided with a cavity structure combined with an ejector tube (11) on a cold heading machine. A sliding weight (10) is also provided in the cavity and is located on the left side of the ejector tube (11). When the ejector tube (11) moves to the extreme left position, the left end surface of the ejector tube (11) contacts the A plane (12) of the second die sleeve (15); The two ends of the spring (5) are respectively connected to the left end surface of the sliding weight (10) and the ejection tube (11), and the spring (5) is sleeved on the tube of the sliding weight.

2. The in-mold knocking device of the cold heading machine according to claim 1, characterized in that: The first die sleeve (6) and the second die sleeve (15) have smooth cavity structures inside.

3. The in-mold striking device of the cold heading machine according to claim 1, characterized in that: The outer surface of the sliding weight (10) is provided with an annular groove (7) and an annular groove (8), and the interior of the second die sleeve (15) is provided with a marble A (9).

4. The cold heading machine in-mold knocking device according to claim 3, characterized in that: When the punch rod (2) is pushed to a position close to the front end, the annular groove (7) of the sliding weight (10) is caught by the steel ball of the marble A (9), the sliding weight (10) stops moving, the ejection tube (11) is still moving from right to left, the spring (5) is compressed, and when the right end of the sliding weight (10) contacts the left end surface of the ejection tube (11), the ejection tube (11) applies a force to the sliding weight (10) that cannot stop the movement of the sliding weight (10), the steel ball of the marble A (9) retracts, and the sliding weight (10) is pushed to the left by the compressed and stored spring (5), thereby pushing the punch rod (2) to the left.

5. The in-mold knocking device of the cold heading machine according to claim 4, characterized in that: The head of the marble A (9) is in the annular groove (8) of the sliding weight, and the marble A (9) does not contact the sliding weight (10), and does not affect the left-right movement of the sliding weight (10).

6. The in-mold knocking device of the cold heading machine according to claim 5, characterized in that: The head of the marble A (9) and the marble B (4) is a smooth steel ball, and a spring is arranged at the back to push the steel ball. In a free state, a part of the steel ball remains exposed. When pressure is applied to the steel ball, the steel ball will retract.

7. The cold heading machine in-mold knocking device according to claim 1, characterized in that: The punch rod (2) and the sliding weight (10) are connected together by brazing and move left and right as a whole. The leftmost end of the punch rod (2) is where the tail plane of the punch rod contacts the B plane (1).

8. The cold heading machine in-mold knocking device according to claim 7, characterized in that: The front end surface of the punch rod (2) is provided with a specific sharp shape for striking out the required marks on the parts.

9. The cold heading machine in-mold knocking device according to claim 1, characterized in that: A friction block (14) is also arranged inside the second die sleeve (15) to generate friction with the surface of the ejector tube (11) so that the left and right movement of the ejector tube (11) is stable.

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