A wire feeding device for a cold heading machine

Abstract

The present application discloses a feeding device for a cold heading machine, which is installed at the top of a concave die cavity and includes a movable plate, a fixed plate, a pushing plate, and a clamp box assembly extending to the front of the concave die cavity; the fixed plate is fixedly installed at the top of the concave die cavity, the movable plate is slidably connected to the front side of the fixed plate and can move left and right under the drive of a transverse cam plate, and the clamp box assembly is fixedly installed on the movable plate; a pushing plate is slidably connected to the rear side of the fixed plate and can move left and right under the drive of a telescopic cam plate; a pushing block is arranged between the pushing plate and the movable plate, and the pushing block is embedded inside the fixed plate; a receiving groove for partially inserting the pushing block is formed on the front side of the pushing plate, and the pushing plate moves left and right to adjust the matching state between the receiving groove and the pushing block; when the pushing block disengages from the receiving groove, it can be pushed forward by the pushing plate, thereby pushing the movable plate forward. The present application can pull out a product part by a certain distance and then move it horizontally, avoiding the movement interference between the part and the ejector punch.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts production, and particularly to a feeding device for a cold heading machine. Background Art

[0002] The normal operating speed of an ordinary cold heading machine is 40 - 100 working cycles per minute. During operation, the main shaft of the cold heading machine drives the transverse cam plate to rotate, driving the clamp to move horizontally left and right. At the same time, the main shaft also drives the telescopic cam plate to drive the clamp group to move back and forth.

[0003] When producing certain special-shaped parts on a cold heading machine, for example, there is a pit at the bottom of the outer shape. When the part is ejected from the mold after cold heading and forming, since the head protrusion of the mold punch rod is embedded in the pit of the part and the two are in close contact, when the clamp holds the part and moves horizontally, interference will occur between the pit of the part and the head of the mold punch rod, preventing the part from moving horizontally. If the clamp is forced to move, the part cannot be stably clamped, and the part will shake severely during the clamping and transportation process, resulting in the part falling off and the feeding failing; or the part is in an inclined state in the clamp due to the movement being blocked, and cannot enter the next working station when entering, resulting in the production being unable to proceed. Summary of the Invention

[0004] Therefore, this application provides a feeding device for a cold heading machine to solve the problem of easy movement interference between the part and the head of the punch rod during horizontal movement after the part is ejected in the prior art.

[0005] In order to achieve the above object, this application provides the following technical solutions:

[0006] A feeding device for a cold heading machine is installed on the top of the female die cavity, and includes a movable plate, a fixed plate, a pushing plate, and a clamp box assembly extending to the front of the female die cavity; the fixed plate is fixedly installed on the top of the female die cavity, the movable plate is slidably connected to the front side of the fixed plate and can move left and right under the drive of the transverse cam plate, and the clamp box assembly is fixedly installed on the movable plate;

[0007] The rear side of the fixed plate is slidably connected with a pushing plate, and the pushing plate can move left and right under the drive of the telescopic cam plate;

[0008] A pushing block is arranged between the pushing plate and the movable plate, and the pushing block is embedded inside the fixed plate; a receiving groove for partially inserting the pushing block is formed on the front side of the pushing plate, and the pushing plate moves left and right to adjust the matching state between the receiving groove and the pushing block; when the pushing block disengages from the receiving groove, it can be pushed forward by the pushing plate, thereby pushing the movable plate forward.

[0009] Optionally, it further includes a back plate, which is fixedly connected to the fixed plate. The front side of the back plate is in close contact with the rear side of the push plate, and the push plate can slide left and right relative to the back plate.

[0010] Optionally, a through hole is formed in the fixed plate, which penetrates the front and rear sides of the fixed plate. The push block is embedded in the through hole and can move back and forth.

[0011] Optionally, a T-shaped groove for inserting the movable plate is formed on the outer side surface of the fixed plate, and the T-shaped groove penetrates the left and right sides of the fixed plate; the movable plate is of a T-shaped structure adapted to the T-shaped groove.

[0012] Optionally, an elastic friction plate is provided on the side wall of the T-shaped groove close to the outside. The movable plate abuts against the elastic friction plate and presses the elastic friction plate when moving forward.

[0013] Optionally, the elastic friction plate is provided with a plurality of bending shapes.

[0014] Optionally, chamfers are provided on both the left and right sides of the push block.

[0015] Optionally, chamfers are provided on both the left and right side walls of the receiving groove.

[0016] Optionally, a sliding groove for inserting the push plate is formed on the rear side surface of the fixed plate, and the sliding groove penetrates the left and right sides of the fixed plate. The push plate can move left and right in the sliding groove.

[0017] Optionally, the forward and backward movement distance of the movable plate is within the range of 0 - 3 mm.

[0018] Compared with the prior art, the present application has at least the following beneficial effects:

[0019] 1. By moving the push plate left and right to adjust the cooperation state between the receiving groove and the push block, when the push block pushes the receiving groove, the receiving groove can be squeezed, driving the movable plate to move forward, and then driving the clamp box assembly to move forward. Thus, after the clamp box assembly clamps the product parts, it is pulled out a certain distance and then moves horizontally, avoiding the movement interference between the parts and the ejector punch.

[0020] 2. The back plate can limit the push plate and provide a reaction force for the push plate to squeeze the push block, ensuring the stability of the pushing effect.

[0021] 3. The elastic friction plate can help the movable plate return to the position close to the die cavity again when restoring, and clamp the parts again. Description of the Drawings

[0022] To more intuitively illustrate the prior art and this application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing this application; for example, those skilled in the art are capable of making routine adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concepts disclosed in this application and the exemplary drawings.

[0023] Figure 1 The front view of a feeding device of a cold heading machine provided by an embodiment of this application;

[0024] Figure 2 The side view of a feeding device of a cold heading machine provided by an embodiment of this application;

[0025] Figure 3 The cross-sectional view of a feeding device of a cold heading machine provided by an embodiment of this application when the clamp box assembly is in a state close to the die cavity;

[0026] Figure 4 The cross-sectional view of a feeding device of a cold heading machine provided by an embodiment of this application when the clamp box assembly is in a state far from the die cavity;

[0027] Figure 5 For Figure 1 The front view of the fixed plate in

[0028] Figure 6 For Figure 1 The overall structural schematic diagram of the fixed plate in

[0029] Figure 7 For Figure 2 The overall structural schematic diagram of the push plate in

[0030] Figure 8 For Figure 3 The overall structural schematic diagram of the push block in

[0031] Explanation of reference numerals:

[0032] 1. Die cavity; 2. Back plate; 3. Movable plate; 4. Fixed plate; 5. Push plate; 6. Clamp box assembly; 7. T-shaped groove; 8. Slide groove; 9. Push block; 10. Through hole; 11. Accommodating groove; 12. Elastic friction plate. Detailed implementation manners

[0033] The following further details this application through specific embodiments in conjunction with the drawings.

[0034] In the description of this application: Unless otherwise specified, the meaning of "a plurality of" is two or more. Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0035] Terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually indications of the general relative position relationship for the convenience of intuitive understanding with reference to the attached drawings, and are not absolute limitations on the position relationship in the actual product.

[0036] A cold heading machine feeding device, referring to Figures 1 - 4 , is installed on the top of the die cavity 1 and includes a back plate 2, a movable plate 3, a fixed plate 4, a push plate 5, and a clamp box assembly 6 extending to the front of the die cavity 1.

[0037] Referring to Figure 4 and Figure 5 , specifically, the fixed plate 4 is fixedly installed on the top of the die cavity 1 to provide an installation position for the remaining components. A T-shaped groove 7 is opened on the front side of the fixed plate 4, and the T-shaped groove 7 penetrates through the left and right sides of the fixed plate 4. The movable plate 3 is a T-shaped structure adapted to the T-shaped groove 7, and it is slidably connected to the fixed plate 4 in cooperation with the T-shaped groove 7. In the embodiment of this application, the movable plate 3 can move left and right in the T-shaped groove 7 driven by a transverse cam plate (not shown in the figure).

[0038] Among them, the clamp box assembly 6 is fixedly installed on the movable plate 3 through two bolts and can move synchronously with the movable plate 3. The clamping part of the clamp box assembly 6 faces downward and extends to the front of the die cavity 1, corresponding to the ejecting position of the part, and is used to clamp the part.

[0039] A chute 8 is opened on the rear side surface of the fixed plate 4, and the chute 8 penetrates through the left and right side walls of the fixed plate 4. A push plate 5 is slidably connected inside the chute 8, and the push plate 5 can move left and right driven by a telescopic cam plate (not shown in the figure).

[0040] Referring to Figures 6 - 8 , further, a push block 9 is arranged between the push plate 5 and the movable plate 3, and the push block 9 is a wear-resistant copper block. The push block 9 is embedded inside the fixed plate 4 and is used to realize the function of pushing the movable plate 3 forward.

[0041] First, a through hole 10 is opened on the fixed plate 4, and the through hole 10 penetrates through the front and rear sides of the fixed plate 4. The push block 9 is embedded in the through hole 10 and can move back and forth relative to the fixed plate 4. It should be noted that the thickness of the push block 9 is greater than the thickness of the fixed plate 4, so that when the push block 9 moves back and forth, the front end face or the rear end face can protrude from the surface of the fixed plate 4.

[0042] Further, to facilitate the backward movement and reset of the movable plate 3, a receiving groove 11 for partially inserting the pushing block 9 is provided on the front side surface of the pushing plate 5. The receiving groove 11 does not penetrate the rear side surface of the pushing plate 5, and the pushing block 9 is not completely inserted into the receiving groove 11, with a part still remaining in the through hole 10 of the fixed plate 4.

[0043] The left - right movement of the pushing plate 5 is used to adjust the mating state between the receiving groove 11 and the pushing block 9, so that when the pushing block 9 disengages from the receiving groove 11, it can be extruded by the pushing plate 5 and move forward, thereby pushing the movable plate 3 forward; when the position of the receiving groove 11 moves to correspond to the pushing block 9 as the pushing plate 5 moves, the pushing block 9 retracts and inserts into the receiving groove 11, canceling the extrusion on the movable plate 3 to facilitate the reset of the clamp box assembly 6.

[0044] Refer to Figure 5 As shown, to help the movable plate 3 and the clamp box assembly 6 reset, an elastic friction plate 12 is provided on the surface of the side wall of the T - shaped groove 7 near the outside. The elastic friction plate 12 is a wear - resistant spring plate with multiple bending shapes to improve the elastic force effect. The movable plate 3 abuts against the elastic friction plate 12 and extrudes the elastic friction plate 12 when moving forward.

[0045] Thus, when the movable plate 3 is extruded forward by the pushing block 9, it will form an extrusion on the elastic friction plate 12. The clamp box assembly 6 will drive the part to be pulled outwards by a certain distance, achieving disengagement from the head of the punch rod of the mold, and then performing a lateral movement. During this process, the elastic friction plate 12 is deformed by the force and stores energy. When the movable plate 3 is in place after the lateral movement, the pushing plate 5 moves left - right to reset, making the positions of the pushing block 9 and the receiving groove 11 correspond. At this time, the elastic friction plate 12 rebounds, driving the movable plate 3 to squeeze the pushing block 9 backward. The pushing block 9 inserts into the receiving groove 11, and the movable plate 3 successfully moves backward. The clamp box assembly 6 can drive the part to move towards the inside of the female die cavity 1, facilitating the insertion of the part into the next working station.

[0046] In this application, to improve the pushing effect, multiple pushing blocks 9 can be provided.

[0047] Refer to Figure 7 and Figure 8 As shown, further, chamfers are provided on both the left and right sides of the pushing block 9. Correspondingly, chamfers are provided on both the left and right side walls of the receiving groove 11. Under the guiding action of the chamfer mating between the two, the relative position change between the pushing block 9 and the receiving groove 11 is smoother, preventing jamming.

[0048] Among them, the elastic compression range of the elastic friction plate 12 is 0 - 3 mm, so that the forward - backward movement distance of the movable plate 3 is also within 0 - 3 mm, which is sufficient for the part to disengage from the head of the punch rod.

[0049] Refer to Figure 2, in the embodiment of the present application, a back plate 2 is further provided at the rear side of the push plate 5, and the push plate 5 can slide left and right relative to the back plate 2. The back plate 2 is fixedly connected to the fixed plate 4 by bolts and is in a stationary state relative to the concave die cavity 1. The front side of the back plate 2 is in close contact with the rear side of the push plate 5 to prevent the push plate 5 from moving backward when squeezing the push block 9.

[0050] The transverse cam plate and the telescopic cam plate in the present application are both original structural components on the cold heading machine, so their structures will not be described in detail herein.

[0051] The implementation principle of the embodiment of the present application is as follows: When the cold heading machine is in the initial state during the main shaft angle of 0 - 180 degrees, the telescopic cam plate drives the push plate 5 to be on the right side, and the rear part of the push block 9 is inserted into the receiving groove 11. At this time, the movable plate 3 is in the rear position of the T-shaped groove 7 under the elastic force of the elastic friction plate 12, and the clamp box assembly 6 is also in a position close to the concave die cavity 1 and just able to clamp the part (refer to Figure 3 ).

[0052] When the cold heading machine runs to the main shaft angle of 300 degrees, the part is ejected by the punch. The clamp box assembly 6 first clamps the part. Subsequently, the telescopic cam plate drives the push plate 5 to move leftward. The receiving groove 11 moves leftward relative to the push block 9, and the push block 9 moves out of the receiving groove 11 and is squeezed by the push plate 5 to move forward, pushing the movable plate 3. The movable plate 3 drives the clamp box assembly 6 to move forward and squeezes the elastic friction plate 12, and the elastic friction plate 12 is deformed under pressure. During this process, the clamp box assembly 6 drives the part to move outward to disengage from the punch head and there is no more movement interference (refer to Figure 4 ).

[0053] When the cold heading machine continues to run, the transverse cam plate drives the movable plate 3 to move horizontally, and the clamp box assembly 6 drives the part to move synchronously until the next working station.

[0054] Refer to Figure 4 , subsequently, the telescopic cam plate starts to work, driving the push plate 5 to move rightward to reset. The position of the receiving groove 11 gradually approaches the push block 9 until it corresponds to the push block 9. At this time, the elastic friction plate 12 is restored and squeezes the movable plate 3 backward. The movable plate 3 then pushes the push plate 5 into the receiving groove 11 to reset the movable plate 3. The clamp box assembly 6 moves backward accordingly, close to the concave die cavity 1, and sends the part to the next working station.

[0055] After completion, the transverse cam plate drives the movable plate 3 to move horizontally and reset to convey a new part. This process repeats continuously to complete the product clamping and feeding work of the cold heading machine.

[0056] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written out should also be considered to be within the scope described in this specification.

Claims

1. A cold heading machine feeding device, characterized in that: It is installed at the top of the female die cavity (1), and includes a movable plate (3), a fixed plate (4), a push plate (5), and a clamp box assembly (6) extending to the front of the female die cavity (1); the fixed plate (4) is fixedly installed at the top of the female die cavity (1), the movable plate (3) is slidably connected to the front side of the fixed plate (4), and can be moved left and right under the drive of a transverse cam plate, and the clamp box assembly (6) is fixedly installed on the movable plate (3); A push plate (5) is slidably connected to the rear side of the fixed plate (4), and the push plate (5) can be moved left and right under the drive of a telescopic cam plate; A push block (9) is arranged between the push plate (5) and the movable plate (3), and the push block (9) is embedded inside the fixed plate (4); a receiving groove (11) for partial insertion of the push block (9) is formed on the front side of the push plate (5), and the push plate (5) moves left and right to adjust the matching state between the receiving groove (11) and the push block (9); when the push block (9) disengages from the receiving groove (11), it can be pushed forward by the push plate (5), so as to push the movable plate (3) forward; It further includes a back plate (2), the back plate (2) is fixedly connected to the fixed plate (4), the front side surface of the back plate (2) is in tight contact with the rear side surface of the push plate (5), and the push plate (5) can slide left and right relative to the back plate (2).

2. The cold heading machine pinch feeding device according to claim 1, characterized in that: A through hole (10) is formed on the fixed plate (4), the through hole (10) penetrates through the front and rear sides of the fixed plate (4), and the push block (9) is embedded in the through hole (10) and can move back and forth.

3. The cold heading machine pinch-feed device according to claim 1, characterized in that: A T-shaped groove (7) for insertion of the movable plate (3) is formed on the outer side surface of the fixed plate (4), and the T-shaped groove (7) penetrates through the left and right sides of the fixed plate (4); the movable plate (3) has a T-shaped structure adapted to the T-shaped groove (7).

4. The cold heading machine pinch feed device according to claim 3, characterized in that: Elastic friction sheets (12) are arranged on the side walls of the T-shaped groove (7) close to the outside, the movable plate (3) abuts against the elastic friction sheets (12), and squeezes the elastic friction sheets (12) when moving forward.

5. The cold heading machine feeding device according to claim 4, characterized in that: The elastic friction sheets (12) are provided with a plurality of bending shapes.

6. The cold heading machine pinch feed device according to claim 1, characterized in that: Chamfers are arranged on both the left and right sides of the push block (9).

7. The cold heading machine feeding device according to claim 6, characterized in that: Chamfers are arranged on both the left and right side walls of the receiving groove (11).

8. The cold heading machine pinch feed device according to claim 1, characterized in that: A chute (8) for insertion of the push plate (5) is formed on the rear side surface of the fixed plate (4), the chute (8) penetrates through the left and right sides of the fixed plate (4), and the push plate (5) can move left and right in the chute (8).

9. The cold heading machine pinch feed device according to claim 1, characterized in that: The forward and backward movement distance of the movable plate (3) is within the range of 0 - 3 mm.

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