Cold header clamping and conveying device

Abstract

The invention discloses a cold header clamping and conveying device which is mounted at the top of a female die cavity and comprises a movable plate, a fixed plate, a push plate and a clamp box assembly extending to the right front of the female die cavity. The fixed plate is fixedly installed on the top of the female die cavity, the movable plate is connected to the front side of the fixed plate in a sliding mode and can move left and right under driving of the transverse moving 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 fixing plate and can move left and right under the driving of the telescopic cam plate; a pushing block is arranged between the pushing plate and the movable plate, and the pushing block is embedded in the fixed plate; the front side of the pushing plate is provided with an accommodating groove for partially inserting the pushing block, and the pushing plate moves left and right to adjust the matching state of the accommodating groove and the pushing block; the pushing block can be extruded by the pushing plate to move forwards when being separated from the containing groove, and therefore the movable plate is pushed to move forwards. According to the device, a product part can be pulled out for a certain distance and then transversely moved, and movement interference between the part and the ejection punch rod is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts production, and in particular to a clamping and feeding device of a cold heading machine. Background Art

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

[0003] When producing parts of certain special shapes on a cold heading machine, for example, there is a pit at the bottom of the shape. When the part is ejected from the mold after cold heading, the head of the mold punch is embedded in the pit of the part, and the two are in close contact. When the clamp clamps the part and moves it horizontally, the pit of the part and the head of the mold punch will interfere with each other, preventing the part from moving horizontally. If the clamp is moved forcibly, the part cannot be clamped stably, and the part will shake severely during the clamping and transportation process, causing the part to fall and the clamping and delivery to fail; or the part is blocked from moving, so it is tilted in the clamp and cannot enter the next station, resulting in production failure. Summary of the invention

[0004] To this end, the present application provides a clamping device for a cold heading machine to solve the problem in the prior art that the parts are easily interfered with the punch head when they move laterally after being ejected.

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

[0006] A clamping and feeding device for a cold heading machine is installed on the top of a die cavity, and comprises a movable plate, a fixed plate, a push plate, and a clamp box assembly extending to the front of the die cavity; the fixed plate is fixedly installed on the top of the die cavity, the movable plate is slidably connected to the front side of the fixed plate, and can be moved left and right by the drive of a 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 push plate, and the push 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 in the fixed plate; a receiving groove for partially inserting the pushing block is opened 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 is separated from the receiving groove, it can be squeezed by the pushing plate and move forward, thereby pushing the movable plate to move forward.

[0009] Optionally, a back plate is further included, which is fixedly connected to the fixing plate, the front side of the back plate is tightly attached to the rear side of the pushing plate, and the pushing plate can slide left and right relative to the back plate.

[0010] Optionally, a through hole is formed on the fixing plate, and the through hole passes through the front and rear sides of the fixing plate, and the pushing block is embedded in the through hole and can move forward and backward.

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

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

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

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

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

[0016] Optionally, a sliding groove for inserting the push plate is provided on the rear surface of the fixed plate, and the sliding groove runs through the left and right sides of the fixed plate, and 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, this application has at least the following beneficial effects:

[0019] 1. The matching state between the receiving groove and the pushing block is adjusted by moving the pushing plate left and right. When the pushing block pushes the receiving groove, it can be squeezed, driving the movable plate to move forward, and then driving the clamp box assembly to move forward. After the clamp box assembly clamps the product parts, it is pulled out for a distance and then moves horizontally, avoiding the movement interference between the parts and the ejector rod.

[0020] 2. The back plate can limit the push plate and provide reaction force for the push plate to squeeze the push block, thus 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 during recovery and clamp the parts again. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 A front view of a cold heading machine clamping and feeding device provided in an embodiment of the present application;

[0024] Figure 2 A side view of a clamping device for a cold heading machine provided in an embodiment of the present application;

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

[0026] Figure 4 A cross-sectional view of a clamp box assembly in a clamping and feeding device of a cold heading machine provided in an embodiment of the present application, in a state where the clamp box assembly is away from a die cavity;

[0027] Figure 5 for Figure 1 The front view of the middle fixing plate;

[0028] Figure 6 for Figure 1 Schematic diagram of the overall structure of the middle fixed plate;

[0029] Figure 7 for Figure 2 Schematic diagram of the overall structure of the push plate;

[0030] Figure 8 for Figure 3 Schematic diagram of the overall structure of the push block.

[0031] Description of reference numerals:

[0032] 1. Concave die cavity; 2. Back plate; 3. Movable plate; 4. Fixed plate; 5. Push plate; 6. Clamp box assembly; 7. T-slot; 8. Slide groove; 9. Push block; 10. Through hole; 11. Accommodating groove; 12. Elastic friction plate. DETAILED DESCRIPTION

[0033] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0034] In the description of this application: unless otherwise specified, "plurality" means two or more. "Including", "comprising", "having" and other expressions also mean "not limited to" (certain units, components, materials, steps, etc.).

[0035] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the purpose of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0036] A cold heading machine clamping device, referring to Figure 1-Figure 4 , installed on the top of the female mold cavity 1, including 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 female mold cavity 1.

[0037] Reference Figure 4 and Figure 5 Specifically, the fixed plate 4 is fixedly mounted on the top of the die cavity 1 to provide a mounting position for the remaining components. A T-slot 7 is provided on the front side of the fixed plate 4, and the T-slot 7 runs through the left and right sides of the fixed plate 4. The movable plate 3 is a T-shaped structure adapted to the T-slot 7, and cooperates with the T-slot 7 to achieve a sliding connection with the fixed plate 4. In the embodiment of the present application, the movable plate 3 is driven by a transverse cam plate (not shown in the figure) to move left and right in the T-slot 7.

[0038] The clamp box assembly 6 is fixedly mounted on the movable plate 3 by 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 ejection position of the part, for clamping the part.

[0039] A slide groove 8 is provided on the rear side of the fixed plate 4, and the slide groove 8 runs through the left and right side walls of the fixed plate 4. A push plate 5 is slidably connected inside the slide groove 8, and the push plate 5 is driven by a telescopic cam plate (not shown) to move left and right.

[0040] Reference Figure 6-Figure 8 Further, a push block 9 is provided 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 in the fixed plate 4 to realize the function of pushing the movable plate 3 to move forward.

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

[0042] Furthermore, in order to facilitate the backward movement and resetting of the movable plate 3, a receiving groove 11 is opened on the front side of the pushing plate 5 for partially inserting the pushing block 9. The receiving groove 11 does not penetrate the rear side of the pushing plate 5, and the pushing block 9 is not completely inserted into the receiving groove 11, and a part of it still remains in the through hole 10 of the fixed plate 4.

[0043] The left and right movement of the pushing plate 5 is used to adjust the matching state between the accommodating groove 11 and the pushing block 9, so that when the pushing block 9 is separated from the accommodating groove 11, it can be squeezed forward by the pushing plate 5, thereby pushing the movable plate 3 to move forward; when the position of the accommodating groove 11 moves with the pushing plate 5 to correspond to the pushing block 9, the pushing block 9 retreats and is inserted into the accommodating groove 11, canceling the squeezing of the movable plate 3, so as to facilitate the resetting of the clamp box assembly 6.

[0044] Reference Figure 5 To help the movable plate 3 and the clamp box assembly 6 to reset, an elastic friction sheet 12 is provided on the side wall surface near the outer side of the T-slot 7. The elastic friction sheet 12 is a wear-resistant spring sheet with multiple curved shapes to improve the elastic effect. The movable plate 3 abuts against the elastic friction sheet 12 and squeezes the elastic friction sheet 12 when moving forward.

[0045] Therefore, when the movable plate 3 is squeezed forward by the push block 9, the elastic friction plate 12 will be squeezed, and the clamp box assembly 6 will drive the part to be pulled outward for a distance, and then separate from the punch head of the mold, and then move horizontally. In this process, the elastic friction plate 12 is deformed by force and accumulates force. When the movable plate 3 is moved horizontally to the right position, the push plate 5 moves left and right to reset, so that the push block 9 corresponds to the position of the receiving groove 11. At this time, the elastic friction plate 12 rebounds, driving the movable plate 3 to squeeze the push block 9 backward, and the push block 9 is inserted into the receiving groove 11. The movable plate 3 is successfully moved backward, and the clamp box assembly 6 can move the part into the inside of the die cavity 1, so that the part can be inserted into the next station.

[0046] In the present application, in order to improve the pushing effect, a plurality of pushing blocks 9 may be provided.

[0047] Reference Figure 7 and Figure 8 Furthermore, both the left and right sides of the push block 9 are chamfered, and correspondingly, both the left and right side walls of the receiving groove 11 are chamfered. Under the guiding effect of the chamfers of the two, the relative position change of the push block 9 and the receiving groove 11 is smoother to prevent jamming.

[0048] The elastic compression range of the elastic friction plate 12 is 0-3 mm, so that the front-to-back moving distance of the movable plate 3 is also within 0-3 mm, which is enough for the parts to be separated from the punch head.

[0049] Reference Figure 2In the embodiment of the present application, a back plate 2 is further provided on 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 mold cavity 1. The front side of the back plate 2 is tightly attached to 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 parts on the cold heading machine, so their structures are not described in detail in this article.

[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 spindle angle period of 0-180 degrees, the telescopic cam plate drives the push plate 5 to the right, and the rear part of the push block 9 is inserted into the receiving groove 11. At this time, the movable plate 3 is at the rear side of the T-slot 7 under the elastic force of the elastic friction plate 12, and the clamp box assembly 6 is also close to the die cavity 1 and can just clamp the part (refer to Figure 3 ).

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

[0053] 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 moves synchronously with the parts until the next station.

[0054] Reference Figure 4 Then, the telescopic cam plate starts to work, driving the push plate 5 to move rightward and reset, and 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 recovers and squeezes the movable plate 3 backward, and the movable plate 3 pushes the push plate 5 to insert into the receiving groove 11, so that the movable plate 3 is reset, and the clamp box assembly 6 then moves back and approaches the die cavity 1, and sends the part to the next station.

[0055] After completion, the lateral cam plate drives the movable plate 3 to lateral reset so that new parts can be transmitted. This cycle is repeated to complete the product clamping and delivery work of the cold heading machine.

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

Claims

1. A cold heading machine clamping and feeding device, characterized in that: Installed on the top of the die cavity (1), it 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 die cavity (1); the fixed plate (4) is fixedly installed on the top of the 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 by the drive of the transverse cam plate, and the clamp box assembly (6) is fixedly installed on the movable plate (3); The rear side of the fixed plate (4) is slidably connected to a push plate (5), and the push plate (5) is driven by the telescopic cam plate to move left and right; A pushing block (9) is arranged between the pushing plate (5) and the movable plate (3), and the pushing block (9) is embedded in the fixed plate (4); a receiving groove (11) for partially inserting the pushing block (9) is provided on the front side of the pushing plate (5); the pushing plate (5) moves left and right to adjust the matching state between the receiving groove (11) and the pushing block (9); when the pushing block (9) is separated from the receiving groove (11), it can be squeezed by the pushing plate (5) and move forward, thereby pushing the movable plate (3) to move forward.

2. The cold heading machine clamping and feeding device according to claim 1, characterized in that: It also includes a back plate (2), the back plate (2) is fixedly connected to the fixing plate (4), the front side of the back plate (2) is tightly attached to the rear side of the pushing plate (5), and the pushing plate (5) can slide left and right relative to the back plate (2).

3. The cold heading machine clamping and feeding device according to claim 1, characterized in that: The fixing plate (4) is provided with a through hole (10), the through hole (10) passes through the front and rear sides of the fixing plate (4), and the pushing block (9) is embedded in the through hole (10) and can move forward and backward.

4. The cold heading machine clamping and feeding device according to claim 1, characterized in that: The outer side surface of the fixed plate (4) is provided with a T-shaped slot (7) for the movable plate (3) to be inserted, and the T-shaped slot (7) runs 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 slot (7).

5. The cold heading machine clamping and feeding device according to claim 4, characterized in that: An elastic friction plate (12) is arranged on the side wall of the T-shaped groove (7) close to the outer side, and the movable plate (3) abuts against the elastic friction plate (12) and presses the elastic friction plate (12) when moving forward.

6. The cold heading machine clamping and feeding device according to claim 5, characterized in that: The elastic friction plate (12) is provided with a plurality of curved shapes.

7. The cold heading machine clamping and feeding device according to claim 1, characterized in that: The left and right sides of the pushing block (9) are both provided with chamfers.

8. The cold heading machine clamping and feeding device according to claim 7, characterized in that: The left and right side walls of the accommodating groove (11) are both provided with chamfers.

9. The cold heading machine clamping and feeding device according to claim 1, characterized in that: The rear surface of the fixed plate (4) is provided with a slide groove (8) for the push plate (5) to be inserted, and the slide groove (8) runs through the left and right sides of the fixed plate (4), and the push plate (5) can move left and right in the slide groove (8).

10. The cold heading machine clamping and feeding 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.

Images