CN116984479A - Hydraulic trimming correction compound die mechanism and method for long-shaft forge piece automatic line - Google Patents

Abstract

The invention relates to an automatic line hydraulic trimming correction composite die mechanism and method for long-axis forgings, which includes an edge trimming die, an edge trimming upper punch, an upper hydraulic system, a lower punch fixing plate, a flash stripper plate, and a lower hydraulic system. System; the upper punch for trimming is pushed against the die for trimming under the pressure of the upper hydraulic system; the pressure is maintained through the upper hydraulic system and continuous pressure is applied to the upper punch to ensure the straightness of the forging after trimming; the lower hydraulic system When there is no pressure, the flash stripper plate is on the lower punch fixed plate; the lower mold has a lower hydraulic system to realize that the flash is lifted up by the flash stripper plate; the forging remains above the lower punch from beginning to end, and there is no risk of collision of the forging. Through the design and use of the trimming correction composite mold structure, the present invention realizes the automated production of long-axis forgings, improves product consistency and process stability, and has achieved industrial application.

Description

An automatic line hydraulic edge trimming and correction compound mold mechanism and method for long shaft forgings

Technical field

The invention belongs to the field of mold technology and relates to an automatic line hydraulic edge trimming correction compound mold mechanism and method for long-axis forgings.

Background technique

For traditional long-shaft forgings, the flash removal function is achieved through a simple trimming die. The forgings with flash are placed on the trimming die through a robot. The upper punch is installed on the equipment slider, and the upper punch is driven automatically by the slider. The upward and downward movement realizes the flash removal function. Under the action of the upper punch, the forging passes through the trimming die and drops to the moving trolley below. The trolley drives the trimmed forging to the next process. The flash remains above the die. The flash is manually removed from the cutting die. Remove the edge from above the concave mold to realize the edge trimming process.

The existing technology has the following problems:

1) There is no correction effect on the forgings during the trimming process, and the straightness of long-axis forgings cannot be guaranteed;

2) Manual removal of flash edges is required, occupying one operator for a long time;

3) If the forgings fall to the moving trolley below, there is a risk of being bruised;

4) After trimming, the flash is easily wrapped with a punch and needs to be removed manually.

Patent document CN201721907413.3 discloses a trimming correction compound mold. One end of the fitting surface of the correction upper mold is provided with an outwardly protruding locking bump, and the fitting surface of the correction lower mold corresponds to the end. The bottom part is provided with an inwardly concave locking groove. When the upper correction mold and the lower correction mold are attached to each other, the locking convex block and the locking groove are engaged with each other.

Patent document CN201120384219.8 discloses a movable trimming and correction compound mold. In this device, the trimming lower mold is designed as a movable connection structure with the upper mold and the correction mold. After trimming and correction are completed, the braking mechanism is used to link and lift the mold. The upper mold and the trimming lower mold connected to it can easily and conveniently remove the workpiece. At the same time, due to the simple structure of the device, it is more convenient to use and the mold manufacturing process is easy to implement.

Patent document CN202122711366.8 discloses a composite stabilizer bar trimming and correction mold. This utility model uses one set of molds to simultaneously complete the trimming and correction of the stabilizer bar blank, that is, to combine the trimming and correction of the stabilizer bar blank. The process can be implemented once.

The above-mentioned patent documents have low relevance to this application.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art and provide an automatic line hydraulic edge trimming correction compound mold mechanism and method for long-axis forgings.

Purpose: The mechanism provided by the invention is used in the trimming process of long-shaft forgings. The long-shaft forgings with flash go through the trimming process to ensure the straightness of the forging itself. The flash is lifted up by the stripper plate and grabbed by the robot. Realize automated production of long shaft forgings and improve product consistency and process stability.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them.

Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment.

In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

An automatic line hydraulic trimming and correction compound die mechanism for long shaft forgings, including:

Trimming die 7, trimming upper punch 8, upper hydraulic system 13, lower punch fixing plate 3, flash stripper plate 5, lower hydraulic system 15;;

The trimming upper punch 8 is pushed against the trimming die 7 under the pressure of the upper hydraulic system 13;

The upper hydraulic system 13 maintains pressure and continuously applies pressure to the upper punch to ensure the straightness of the forging after trimming.

When there is no pressure in the lower hydraulic system 15, the flash stripper plate 5 is on the lower punch fixed plate 3;

The lower mold has a lower hydraulic system 15 to realize that the flash is lifted up by the flash stripper 5;

The forging remains above the lower punch from beginning to end, and there is no risk of collision.

Further, an automatic line hydraulic trimming correction compound mold mechanism for long-axis forgings also includes an upper ejector pin 11;

The trimming upper punch 8 contacts the forging, and the upper hydraulic system 13 continues to maintain pressure. The hydraulic system ejector pin presses on the upper ejector pin 11, and the upper ejector pin 11 exerts pressure on the trimming upper punch. The punches work together to hold the forging. When the trimming die 7 cuts the flash, the forging will not bend or shift.

Further, when the equipment slider moves down, the trimming die 7 cuts off the flash, and the flash falls on the flash stripper plate 5 .

Further, after cutting off the flash, the equipment slider returns, the trimming die 7 moves upward, and the trimming upper punch 8 remains motionless under the pressure of the upper hydraulic system. When the edge trimming die 7 contacts the upper punch, The upper punch is pushed on the die and follows the die upward.

Further, an automatic line hydraulic trimming correction compound die mechanism for long-axis forgings also includes a trimming lower die base 2, a lower ejector pin 12, and a lower ejector plate 14;

The slider reaches the top dead center, and the robot grabs the forging without flash. When the lower hydraulic system 15 is working, the lower ejector plate 14 enters the groove of the trimmed lower die base 2 and pushes the lower ejector pin 12. Lift up the flash stripper plate 5 with flash edges.

Further, an automatic line hydraulic trimming correction compound die mechanism for long-axis forgings also includes a trimming lower punch 6;

After forging, the hot forging with flash is transferred by the robot to the lower punch 6 for edge trimming, and returns to the origin, and the equipment slide begins to move downward for edge trimming.

Further, an automatic line hydraulic trimming correction compound die mechanism for long-axis forgings also includes a distance sensor;

The flash is on the flash removal board, and an external ranging sensor is added to transmit the grabbing flash signal to the robot to achieve unmanned production.

Further, the trimming lower punch 6 is fastened to the lower punch fixing plate 3 through bolts, and the flash stripping plate 5 is aligned with the lower ejector pin 12 and is placed on the lower punch fixing plate 3. The lower punch fixing plate 3 Fix it on the trimming lower mold base 2 by tightening it with bolts.

Further, an automatic line hydraulic edge trimming correction compound die mechanism for long-axis forgings also includes an edge trimming upper die base 1, a concave die fixing plate 4, an upper backing plate 9, and an upper punch guide rod 10;

The concave die fixing plate 4 is fixed on the trimming upper mold base 1, and the upper punch guide rod 10 is fixed on the upper pad 9; the upper pad 9 is fixed on the trimming upper mold base 1; the upper ejector rod 11, trimming The upper punch 8 is assembled in the die fixing plate 4 in sequence, and the trimming die 7 is fixed on the die fixing plate 4; the trimming upper die base 1, the die fixing plate 4, the trimming die 7, and the upper pad 9. The upper punch guide rod 10 is a whole; the trimming upper punch 8 can realize longitudinal movement in the die holder under the guidance of the upper punch guide rod 10.

An automatic line hydraulic trimming correction method for long shaft forgings, including:

The upper trimming punch 8 is pushed against the trimming die 7 under the pressure of the upper hydraulic system 13;

There is no pressure in the lower hydraulic system 15, and the flash stripper plate 5 is on the lower punch fixed plate 3;

After forging, the hot forging with flash is transferred by the robot to the lower punch for edge trimming and returns to the origin. At this time, the equipment slider begins to move downward for edge trimming;

When the trimming upper punch 8 contacts the forging, the upper hydraulic system 13 continues to maintain pressure. The hydraulic system ejector pin presses on the upper ejector pin 11. The upper ejector pin 11 exerts pressure on the edge trimming upper punch 8. The upper punch and the lower The punches work together to hold the forging. When the trimming die 7 cuts the flash, the forging will not bend or shift; the equipment slide continues to move downward, the trimming die 7 cuts off the flash, and the flash falls on the flash and retreats. On material plate 5;

After cutting off the flash, the equipment slider returns, the trimming die 7 moves upward, and the trimming upper punch 8 remains motionless under the pressure of the upper hydraulic system. When the edge trimming die 7 contacts the upper punch, the upper punch It is pushed up on the die and follows the die upward;

The slider reaches the top dead center, and the robot grabs the forging without flash. At this time, the lower hydraulic system 15 works, and the lower ejector plate 14 enters the groove of the trimmed lower die base 2 and pushes the lower ejector pin 12. Push up the flash stripping plate 5 with flash, and the external ranging sensor transmits a signal to grab the flash to the robot. The robot grabs the flash, lowers the material and returns, and the mold is sprayed with water and atomized for cooling, completing once cycle.

The invention relates to a compound mold mechanism and method for automatic line trimming correction of long-axis forgings. More specifically, by maintaining pressure through a hydraulic system, trimming can be smoothly realized while correcting the straightness of the forgings and the forgings can be withdrawn to the The edge is trimmed outside the concave mold to realize the return function.

Compared with the traditional trimming process, the patented invention has the following advantages:

1) Maintain pressure through the hydraulic system and continuously apply pressure on the upper punch to ensure the straightness of the forging after trimming;

2) The flash is on the flash removal plate and is captured by robots to achieve unmanned production;

3) The forging remains above the lower punch from beginning to end, and there is no risk of collision;

4) The flash is lifted up by the stripper plate, and there is no risk of the punch being covered.

The beneficial effects of the present invention are: through the design and use of the edge trimming correction composite mold structure, the automatic production of long-axis forgings can be realized, product consistency and process stability can be improved, and industrial application has been realized.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings:

Figure 1 is a schematic diagram of the state of the equipment slider when it is pushing up or down;

Figure 2 is a schematic diagram when the equipment slider starts to move downward for edge cutting;

Figure 3 is a schematic diagram of the composition of the compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to the present invention;

In the picture:

1-Trimming upper mold base;

2-Trimming lower mold base;

3-Lower punch fixing plate;

4-Concave mold fixing plate;

5-Flash stripper plate;

6-Punch under the trimming edge;

7-Trimming die;

8-Punch on the cut edge;

9-upper pad;

10-Upper punch guide rod;

11- Upper push rod;

12-Lower push rod;

13-upper hydraulic system;

14-Lower ejection plate;

15-Lower hydraulic system.

Detailed ways

In order to make the objectives, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numbers throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are some, but not all, of the embodiments of the present invention.

The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and are not to be construed as limiting the present invention.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

The present invention will be described in detail below in conjunction with the accompanying drawings:

The working process of this mechanism: It is mainly used for the automatic line trimming process of long-axis forgings. The working process is as follows. The equipment slider is up/down and the material is pushed down → After forging, the hot forgings with flash are transferred to the trimming by the robot. Lower the punch and return to the origin → the slider goes down to trim → the slider returns → the slider returns to the top dead center → the robot grabs the forging without flash → the lower ejector material ejects the flash → the robot takes the flash → lower Ejection material return journey/mold spray water atomization cooling. Complete a cycle.

Referring to Figure 3, the present invention provides an embodiment of a compound mold mechanism for automatic line hydraulic trimming and correction of long-axis forgings.

The main structural components of this mechanism (long shaft forging trimming composite mold) are as follows:

Upper trimming die base 1, lower trimming die base 2, lower punch fixing plate 3, die fixing plate 4, flash stripper plate 5, trimming lower punch 6, trimming die 7, trimming upper Punch 8, upper backing plate 9, upper punch guide rod 10, upper ejector rod 11, lower ejector rod 12, upper hydraulic system 13, lower ejector plate 14, lower hydraulic system 15.

3) The main mold structure assembly methods of this mechanism are as follows:

a. Install the lower mold

First, fasten the trimming lower punch 6 to the lower punch fixing plate 3 through bolts, then align the flash stripper plate 5 with the lower ejector pin 12 and set it on the lower punch fixing plate 3, and finally tighten the lower punch fixing plate. 3. Fix it on the trimming lower mold base 2 by tightening bolts.

b. Install the mold

First, flip the trimming upper mold base 1 using the mold turning mechanism, then fix the concave mold fixing plate 4 on the upper mold base through bolts, and tighten the upper punch guide rod 10 on the upper pad 9 through bolts. . The upper backing plate 9 with the upper punch guide rod 10 is tightened on the trimming upper mold base 1 through bolts. After the upper ejector pin 11 and the trimming upper punch 8 are assembled in the die fixing plate 4 in sequence, Fasten the trimming die 7 to the die fixing plate 4 with bolts. At this time, the trimming upper mold base 1, the die fixing plate 4, the trimming die 7, the upper backing plate 9, and the upper punch guide rod 10 are integrated. The trimming upper punch 8 can realize longitudinal movement in the die holder under the guidance of the upper punch guide rod 10.

The working principle of this mechanism when working in the automatic line trimming process of long shaft forgings is as follows (Figure 1, Figure 2, Figure 3) combined with the work flow:

The present invention provides another embodiment, an automatic line hydraulic trimming correction method for long shaft forgings.

Figure 1 shows the state of the equipment slider when the material is pushed up/down. At this time:

Upper die: The trimming upper punch 8 is pushed against the trimming die 7 under the pressure of the upper hydraulic system 13 .

Lower die: There is no pressure in the lower hydraulic system 15, and the flash stripper plate 5 is on the lower punch fixing plate 3.

After forging, the hot forging with flash is transferred by the robot to the lower punch for trimming and returns to the origin. At this time, the equipment slider begins to move downward for trimming, as shown in Figure 2.

When the trimming upper punch 8 contacts the forging, since the upper hydraulic system 13 continues to maintain pressure, the hydraulic system ejector pin presses on the upper ejector pin 11, and the upper ejector pin 11 exerts pressure on the edge trimming upper punch 8. At this time, the upper punch 8 The head and the lower punch work together to hold the forging, so when the trimming die 7 cuts the flash, the forging will not bend or shift. The equipment slider continues to move downward, and the trimming die 7 cuts off the flash, as shown in Figure 3, and the flash falls on the flash stripper plate 5.

After cutting off the flash, the equipment slider returns, the trimming die 7 moves upward, and the trimming upper punch 8 remains motionless under the pressure of the upper hydraulic system. When the edge trimming die 7 contacts the upper punch, the upper punch It is pushed up on the die and follows the die upward. The slider reaches the top dead center, and the robot grabs the forging without flash. At this time, the lower hydraulic system 15 works, and the lower ejector plate 14 enters the groove of the trimmed lower die base 2 and pushes the lower ejector pin 12. Push up the flash stripping plate 5 with flash. At this time, the external distance sensor transmits a signal to the robot to grab the flash. The robot grabs the flash and returns to the top/mold for water spray and atomization cooling. Complete a cycle.

The mechanism provided by the present invention is used in the trimming process of long-shaft forgings. Compared with the traditional trimming process, the long-shaft forgings that have gone through the trimming process of the present invention are held by the upper and lower punches under the continuous pressure maintaining of the upper hydraulic system. The forging is held, and the straightness of the forging is fully guaranteed; the cut flash falls on the flash retreat plate, and through the signal transmission of the external distance sensor, the robot grabs the flash, realizing unmanned production; the forging is started from the beginning Finally, it remains above the lower punch, and there is no risk of the forging being bumped; the flash is lifted up by the stripper plate, and there is no risk of covering the lower punch. Realize automated production of long shaft forgings, improve product consistency and process stability, and have achieved industrial application.

What the invention provides is a complete set of automatic line hydraulic edge trimming and correction compound mold mechanisms:

The upper hydraulic system maintains pressure and continuously applies pressure to the upper punch to ensure the straightness of the forging after trimming;

The flash is on the flash removal plate, and an external ranging sensor is added to transmit the grabbing flash signal to the robot to achieve unmanned production;

Through the trimming correction compound die structure design, the forging remains above the lower punch from beginning to end, and there is no risk of collision of the forging;

The lower mold is equipped with a lower hydraulic system device to realize that the flash is lifted up by the stripper plate, without the risk of covering the punch.

The beneficial effects of the invention are: realizing batch production of long-axis forgings, improving product consistency and process stability, and realizing industrial application.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field shall, within the technical scope disclosed in the present invention, be within the spirit and principles of the present invention. Any modifications, equivalent substitutions and improvements made within the above shall be included in the protection scope of the present invention. At the same time, contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims (10)

1. An automatic line hydraulic trimming and correction compound die mechanism for long shaft forgings, which is characterized by including: Trimming die (7), trimming upper punch (8), upper hydraulic system (13), lower punch fixing plate (3), flash stripper plate (5), lower hydraulic system (15); The trimming upper punch (8) is pushed against the trimming die (7) under the pressure of the upper hydraulic system (13); The upper hydraulic system (13) maintains pressure and continuously applies pressure to the upper punch to ensure the straightness of the forging after trimming. When there is no pressure in the lower hydraulic system (15), the flash stripper plate (5) is on the lower punch fixed plate (3); The lower mold has a lower hydraulic system (15) to realize that the flash is lifted up by the flash stripper plate (5); The forging remains above the lower punch from beginning to end, and there is no risk of collision. 2. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 1, characterized by: Also includes an upper ejector rod (11); The trimming upper punch (8) contacts the forging, the upper hydraulic system (13) continues to maintain pressure, the hydraulic system ejector pin presses on the upper ejector pin (11), and the upper ejector pin (11) supplies the trimming upper punch Applying pressure, the upper punch and the lower punch work together to hold the forging. When the trimming die (7) cuts the flash, the forging will not bend or shift. 3. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 2, characterized by: When the equipment slider moves down, the trimming die (7) cuts off the flash, and the flash falls on the flash stripper plate (5). 4. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 3, characterized by: After cutting off the flash, the equipment slider returns, the trimming die (7) moves upward, and the trimming upper punch (8) remains motionless under the pressure of the upper hydraulic system. When the trimming die (7) contacts the upper punch When the head is pressed, the upper punch is pushed on the die and follows the die upward. 5. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 4, characterized by: It also includes a lower trimming die base (2), a lower ejector pin (12), and a lower ejector plate (14); The slider reaches the top dead center, and the robot grabs the forging without flash. When the lower hydraulic system (15) is working, the lower ejector plate (14) enters the groove of the edge-trimming lower die base (2) and pushes the ejector pin (12), the lower push rod (12) lifts up the flash stripper plate (5) with flash. 6. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 5, characterized by: Also includes edge trimming lower punch (6); After forging, the hot forging with flash is transferred by the robot to the lower punch (6) for edge trimming, and returns to the origin, and the equipment slide begins to move downward for edge trimming. 7. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 6, characterized by: Also included is a ranging sensor; The flash is on the flash removal board, and an external ranging sensor is added to transmit the grabbing flash signal to the robot to achieve unmanned production. 8. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 7, characterized by: The trimming lower punch (6) is fastened to the lower punch fixing plate (3) through bolts, and the flash stripper plate (5) is aligned with the lower ejector pin (12) and is placed on the lower punch fixing plate (3). , the lower punch fixing plate (3) is fixed on the trimming lower die base (2) by tightening bolts. 9. A compound die mechanism for automatic line hydraulic trimming and correction of long-axis forgings according to claim 8, characterized by: It also includes an edge trimming upper die base (1), a concave die fixing plate (4), an upper backing plate (9), and an upper punch guide rod (10); The concave die fixing plate (4) is fixed on the trimming upper die base (1), and the upper punch guide rod (10) is fixed on the upper pad (9); the upper pad (9) is fixed on the trimming upper die holder. (1) Upper; the upper ejector pin (11) and trimming upper punch (8) are assembled in the die fixing plate (4) in sequence, and the trimming die (7) is fixed on the die fixing plate (4); The trimming upper die base (1), die fixing plate (4), trimming die (7), upper pad (9), and upper punch guide rod (10) are a whole; the trimming upper punch ( 8) Under the guidance of the upper punch guide rod (10), longitudinal movement can be achieved in the die holder. 10. An automatic line hydraulic trimming correction method for long shaft forgings, which is characterized by including: The upper trimming punch is pushed against the trimming die under the pressure of the upper hydraulic system; There is no pressure in the lower hydraulic system, and the flash stripper plate is on the lower punch fixed plate; After forging, the hot forging with flash is transferred by the robot to the lower punch for edge trimming and returns to the origin. At this time, the equipment slider begins to move downward for edge trimming; When the trimming upper punch contacts the forging, the upper hydraulic system continues to maintain pressure. The ejector pin of the hydraulic system presses against the upper ejector pin. The upper ejector pin exerts pressure on the trimming upper punch. The upper punch and the lower punch work together to hold the edge. Hold the forging, and when the trimming die cuts the flash, the forging will not bend or shift; the equipment slider continues to move downward, the trimming die cuts off the flash, and the flash falls on the flash stripper plate; After the flash is cut off, the equipment slider returns, and the trimming die moves upward. The trimming upper punch remains motionless under the pressure of the upper hydraulic system. When the edge trimming die contacts the upper punch, the upper punch is pushed against the upper punch. The concave mold moves upward following the concave mold; The slider reaches the top dead center, and the robot grabs the forging without flash. At this time, the lower hydraulic system works, and the lower ejector plate enters the groove of the trimming lower die seat to push the lower ejector rod. The lower ejector rod handle has flash edges. The flash stripping plate is lifted up, and the external ranging sensor transmits a signal for grabbing the flash to the robot. The robot grabs the flash, lowers the material and returns, and the mold is sprayed with water and atomized for cooling, completing a cycle.