Stamping die for valve body protection cover

Abstract

The utility model discloses a stamping die for a valve body protective cover, which comprises a bottom frame and a lower die plate fixed at the top end of the bottom frame, two symmetrical column type damping guide structures are arranged on two sides of the top end of the lower die plate in the X-axis direction, and an upper die plate is arranged at the top ends of the four column type damping guide structures. A concave guide anti-deviation structure is arranged between the front outer walls and the rear outer walls of the upper die plate and the lower die plate, and a first upper male die and a second upper punching die are sequentially installed on the two sides of the bottom end of the upper die plate. According to the column type damping guide structure, the stability of the guide column and the ejector pin is kept by absorbing and dispersing impact force, so that the overall stability and durability of the die are ensured, the concave guide anti-deviation structure prevents the upper die from rotating or deviating in the operation process in the die positioning process through the accurate concave design, and the production efficiency of the die is improved. And the geometric accuracy and quality of stamping parts are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and specifically relates to a stamping die for a valve body protective cover. Background Technique

[0002] The main function of the valve protective cover is to protect the valve and its control components from damage or pollution in the external environment. This kind of protective cover is usually made of corrosion-resistant metal materials through stamping processes, such as stainless steel or aluminum alloy, etc. The stamping die used for processing the valve protective cover mainly consists of an upper die and a lower die. The upper die includes a punch (punch head), and the lower die has a matching die cavity. These two form the plastic deformation space for the metal sheet during the stamping process. The die bottom plate supports and fixes the entire structure to ensure stability and precision. The guide pillars and guide sleeves are used to ensure the precise positioning of the upper and lower dies, and the ejector pins and ejector pin seats assist in positioning the metal sheet. However, at the present stage, during the up and down movement process of the stamping die, the guiding and positioning are mainly carried out by the guide pillars and ejector pins in the upper and lower dies, and there is no auxiliary positioning between the lower template and the upper template. If the punching press or the die vibrates or is impacted, it is difficult to effectively resist external interference only relying on the positioning of the guide pillars and ejector pins, resulting in the displacement or skew of the die, that is, there is a slight deviation in the relative position between the upper die and the lower die during the stamping process, affecting the precision of the stamped parts. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stamping die for a valve body protective cover, and a columnar shock-absorbing guiding structure and a concave-character guiding anti-deviation structure are added between the upper and lower templates, so as to reduce the relative offset amount between the upper die and the lower die during the stamping process, and solve the problems proposed in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A stamping die for a valve body protective cover, including a chassis and a lower template fixed to the top of the chassis. On both sides of the top of the lower template in the X-axis direction, two symmetric columnar shock-absorbing guiding structures are installed, and an upper template is installed at the top of the four columnar shock-absorbing guiding structures. A concave-character guiding anti-deviation structure is arranged between the front and rear outer walls of the upper template and the lower template. On both sides of the bottom end of the upper template, a first upper punch and a second upper punching die are sequentially installed. On both sides of the top of the lower template, a first lower punch and a second lower positioning template are installed for cooperating with the first upper punch and the second upper punching die. On one side of the bottom end of the first upper punch, an upper stamping die cavity is installed.

[0005] Preferably, the upper stamping die cavity includes a steel seat bolted and fixed to the bottom end of the first upper punch and a protective cover sheet metal die cavity fixed to the bottom end of the steel seat.

[0006] Preferably, a plurality of steel docking columns with internal threaded counterbores are fixed to the tops of the first upper convex die and the second upper punching die. Internal threaded holes concentric with the internal threaded counterbores are provided at the top of the upper template. The upper template is bolted to the first lower convex die and the second upper punching die through the steel docking columns.

[0007] Preferably, the column-type shock-absorbing and guiding structure includes a steel sleeve fixed at the corner positions at the bottom end of the upper template, a steel column fixed at the corner positions at the top end of the lower template, and a shock-absorbing spring wound around the outer peripheral surface of the steel column. The steel sleeve and the steel column are in sliding fit.

[0008] Preferably, the concave-shaped guiding and anti-deviation structure includes rectangular steel rails fixed on the front and rear outer walls of the upper template and concave-shaped seats installed on the front and rear outer walls of the lower template. The rectangular steel rails and the concave-shaped seats are in sliding fit.

[0009] Preferably, an external threaded groove is provided on the outer peripheral surface of the steel sleeve, and an upper threaded hole extending upward and cooperating with the external threaded groove is provided at the bottom end of the upper template.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing mutually cooperating structures such as the column-type shock-absorbing and guiding structure and the concave-shaped guiding and anti-deviation structure, during the up-and-down movement of the upper template, the column-type shock-absorbing and guiding structure absorbs and disperses the impact force, maintaining the stability of the guide posts and ejector pins, thereby ensuring the overall stability and durability of the mold. The concave-shaped guiding and anti-deviation structure, through its precise concave-shaped design, avoids the rotation or deviation of the upper die during the mold positioning process, guarantees the geometric accuracy and quality of the stamping parts, and maintains the stability of the mold, ensuring the consistency of each stamping action. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic three-dimensional structure diagram of the present utility model Figure 1 ;

[0012] Figure 2 is a schematic three-dimensional structure diagram of the present utility model Figure 2 ;

[0013] Figure 3 is a schematic three-dimensional structure diagram of the present utility model after the upper template is removed Figure 1 ;

[0014] Figure 4 is a schematic three-dimensional structure diagram of the present utility model after the upper template is removed Figure 2 ;

[0015] Figure 5 is a schematic three-dimensional structure diagram of the upper concave die of the present utility model.

[0016] In the figure: 1. Underframe; 2. Lower template; 3. Upper template; 4. First lower punch; 5. Column-type shock-absorbing guiding structure; 6. Concave-character guiding anti-deviation structure; 7. First upper punch; 8. Second upper punching die; 9. Second lower positioning template; 10. Steel docking column; 11. Upper stamping female die; 1101. Steel seat; 1102. Protective cover sheet metal female die. Specific implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-5 , an embodiment provided by the present invention: A stamping die for a valve body protective cover, including an underframe 1 and a lower template 2 fixed to the top end of the underframe 1. On both sides of the top end of the lower template 2 in the X-axis direction, two symmetric column-type shock-absorbing guiding structures 5 are installed, and the top ends of the four column-type shock-absorbing guiding structures 5 are provided with an upper template 3. A concave-character guiding anti-deviation structure 6 is arranged between the front and rear outer walls of the upper template 3 and the lower template 2. On both sides of the bottom end of the upper template 3, a first upper punch 7 and a second upper punching die 8 are sequentially installed. On both sides of the top end of the lower template 2, a first lower punch 4 and a second lower positioning template 9 for cooperating with the first upper punch 7 and the second upper punching die 8 are installed. On one side of the bottom end of the first upper punch 7, an upper stamping female die 11 is installed;

[0019] The upper stamping female die 11 includes a steel seat 1101 bolted and fixed to the bottom end of the first upper punch 7 and a protective cover sheet metal female die 1102 fixed to the bottom end of the steel seat 1101. When the first lower punch 4 and the first upper punch 7 perform a stamping and forming action, the protruding part at the top end of the first lower punch 4 presses the steel plate into the groove of the protective cover sheet metal female die 1102 to form a shell structure;

[0020] On the top ends of the first upper punch 7 and the second upper punching die 8, a plurality of steel docking columns 10 with internal threaded counterbores are fixed. The top end of the upper template 3 is provided with internal threaded holes concentric with the internal threaded counterbores. The upper template 3 is bolted to the first lower punch 4 and the second upper punching die 8 through the steel docking columns 10;

[0021] The column-type shock-absorbing guiding structure 5 includes a steel sleeve fixed at the corner position of the bottom end of the upper template 3, a steel column fixed at the corner position of the top end of the lower template 2, and a shock-absorbing spring wound around the outer peripheral surface of the steel column. The steel sleeve and the steel column are in sliding fit. During the downward movement of the upper template 3, the upper template 3 drives the steel sleeve in the column-type shock-absorbing guiding structure 5 to move up and down on the steel column, and the shock-absorbing spring on the outer peripheral surface of the steel column is compressed, which can effectively absorb impact and vibration and reduce the die displacement or deviation caused by machine tool vibration or external interference;

[0022] The concave - character guiding anti - deviation structure 6 includes a rectangular steel rail fixed on the front and rear outer walls of the upper template 3 and a concave - character seat installed on the front and rear outer walls of the lower template 2. The rectangular steel rail and the concave - character seat are in sliding fit. The upper template 3 will drive the rectangular steel rail to maintain a relative sliding state in the concave - character seat. Combined with the column - type shock - absorbing guiding structure 5, it can achieve more accurate positioning in multiple directions. The concave - character shape can effectively guide the upper template 3 to prevent accidental deviation or rotation during the stamping process, ensuring the geometric accuracy of the stamped parts.

[0023] The outer peripheral surface of the steel sleeve is provided with an external thread groove, and the bottom end of the upper template 3 is provided with an upper thread hole extending upward and mating with the external thread groove. Through the external thread groove and the upper thread hole, the steel sleeve can be quickly connected to the upper template 3.

[0024] When the embodiment of the present application is in use, first, the steel plate outside the stamping die is accurately fed into the stamping area as the stamping material through the steel - plate feeding structure. That is, the steel plate is first fed by the steel - plate feeding structure between the first lower punch 4 and the first upper punch 7. The upper template 3 is connected to an external hydraulic cylinder, and the hydraulic cylinder drives the upper template 3, the first lower punch 4, and the first upper punch 7 to perform lifting actions. At this time, the first lower punch 4 and the first upper punch 7 are the first step of the stamping process, and cooperate with the upper stamping die 11 to form an initial protrusion or edge on the steel plate, thereby shaping the steel plate to ensure the consistency of the shape of the valve protection shell. When the steel plate is formed between the first lower punch 4 and the first upper punch 7, the first lower punch 4 and the first upper punch 7 separate, and the steel plate and the formed part of the steel plate continue to move forward under the action of the steel - plate feeding structure outside the die until the formed part of the steel plate is fed between the second upper punching die 8 and the second lower positioning template 9. The second lower positioning template 9 ensures the accurate alignment and stability of the upper die and the lower die during the stamping process, while the second upper punching die 8 performs a punching operation on the steel plate to cut the steel plate into the required shape, that is, to cut out the waste on the formed part. The formed valve protection shell remains on the second lower positioning template 9. After the second upper punching die 8 and the second lower positioning template 9 are separated, the staff can take out the formed valve protection shell. During the up - and - down movement of the upper template 3, the column - type shock - absorbing guiding structure 5 maintains the stability of the guide post and the ejector pin by absorbing and dispersing the impact force, thereby ensuring the overall stability and durability of the die. The concave - character guiding anti - deviation structure 6, through its precise concave - character design, avoids the rotation or deviation of the upper die during the die positioning process, ensures the geometric accuracy and quality of the stamped parts, and maintains the stability of the die, ensuring the consistency of each stamping action.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A stamping die for a valve body protective cover, characterized in that: The invention comprises a base frame (1) and a lower template (2) fixed at the top of the base frame (1); two symmetrical columnar shock-absorbing guide structures (5) are installed on both sides of the top of the lower template (2) in the X-axis direction; and an upper template (3) is installed on the top of the four columnar shock-absorbing guide structures (5); a concave guide anti-deflection structure (6) is arranged between the front and rear outer walls of the upper template (3) and the lower template (2); a first upper punch (7) and a second upper cutting die (8) are installed on both sides of the bottom of the upper template (3) in sequence; a first lower punch (4) and a second lower positioning template (9) for cooperating with the first upper punch (7) and the second upper cutting die (8) are installed on both sides of the top of the lower template (2); and an upper stamping die (11) is installed on one side of the bottom of the first upper punch (7).

2. A stamping die for a valve body protection cover according to claim 1, characterized in that: The upper punching die (11) comprises a steel seat (1101) bolted to the bottom end of the first upper punch (7) and a protective cover sheet metal die (1102) fixed to the bottom end of the steel seat (1101).

3. A stamping die for a valve body protection cover according to claim 1, characterized in that: The top ends of the first upper punch (7) and the second upper cutting die (8) are both fixed with a plurality of steel docking columns (10) with internal threaded countersunk holes. The top end of the upper template (3) is provided with internal threaded holes concentric with the internal threaded countersunk holes. The upper template (3) is bolted to the first lower punch (4) and the second upper cutting die (8) via the steel docking columns (10).

4. A stamping die for a valve body protection cover according to claim 1, characterized in that: The column-type shock-absorbing guide structure (5) comprises a steel sleeve fixed at the bottom corner of the upper template (3), a steel column fixed at the top corner of the lower template (2), and a shock-absorbing spring wound around the outer circumference of the steel column, wherein the steel sleeve and the steel column are slidably matched.

5. The stamping die for the valve body protection cover according to claim 1, characterized in that: The concave guide anti-deflection structure (6) comprises a rectangular steel rail fixed on the front and rear outer walls of the upper template (3) and a concave seat installed on the front and rear outer walls of the lower template (2), and the rectangular steel rail and the concave seat are slidably matched.

6. A stamping die for a valve body protection cover according to claim 4, characterized in that: The outer peripheral surface of the steel sleeve is provided with an external thread groove, and the bottom end of the upper template (3) is provided with an upper thread hole extending upward and cooperating with the external thread groove.

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