Large-caliber thick-wall elbow stamping equipment

Abstract

The utility model discloses large-caliber thick-wall elbow stamping equipment which comprises a bottom plate and a top plate, the bottom plate and the top plate are connected through stand columns, a lower die assembly is arranged on the bottom plate, an upper die assembly is arranged on the top plate, and the lower die assembly comprises a lower die frame, two sets of lower die bases and two sets of bearing tables. The upper die assembly comprises two sets of upper die bases, a through groove is formed in the bearing table, multiple sets of positioning columns are arranged on the bearing table, the multiple sets of positioning columns form a positioning area, a plate is placed in the positioning area, hydraulic cylinders are arranged on the two sides of the bottom plate correspondingly, and the hydraulic cylinders are used for driving the bearing table to move in the axial direction. The two sets of lower die bases and the two sets of upper die bases jointly form two sets of punch forming positions, two sets of formed parts can be punched at a time, and the punch forming efficiency of punching equipment is improved; and after punch forming, the hydraulic cylinder jacks up and resets the bearing table, and the bearing table jacks up the formed part synchronously, so that the formed part is separated from the male die, and demolding is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elbow stamping, in particular to a large-caliber thick-wall elbow stamping device. Background Art

[0002] Large-diameter thick-wall elbows are a type of pipe fittings used at pipe bends. They account for a large proportion of all pipe fittings used in pipeline systems. Usually, different forming processes are selected for thick-wall elbows of different materials or wall thicknesses. At present, stamping is a common forming process for manufacturing large-diameter thick-wall elbows. A sheet of the same material as the pipe is used to stamp out a half-ring elbow with a stamping die, and then the two ring elbows are assembled and welded to form a large-diameter thick-wall elbow.

[0003] Most of the existing stamping equipment includes a group of stamping and forming positions. The stamping and forming efficiency needs to be improved. After the stamping is completed, the molded part and the mold are fixed together. A certain external force is required for manual demoulding, which makes demoulding inconvenient. Utility Model Content

[0004] The utility model aims to provide a large-caliber thick-wall elbow stamping device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-diameter thick-wall elbow stamping equipment, comprising a bottom plate and a top plate, the bottom plate and the top plate are connected by a column, a lower die assembly is arranged on the bottom plate, an upper die assembly is arranged on the top plate, the lower die assembly comprises a lower die frame, two groups of lower die seats and two groups of supporting platforms, the upper die assembly comprises two groups of upper die seats, a through groove is opened on the supporting platform, and a plurality of groups of positioning columns are arranged on the supporting platform, the plurality of groups of positioning columns form a positioning area, and a sheet material is placed in the positioning area, hydraulic cylinders are arranged on both sides of the bottom plate, and the hydraulic cylinders are used to drive the supporting platform to move axially.

[0006] Wherein, a molding cavity is provided on the lower end surface of the upper die seat, and a convex die is provided on the lower die seat.

[0007] Among them, a first side plate is welded and fixed on one side of the two groups of supporting platforms, and one end of the two groups of hydraulic cylinder push rods is respectively fixed between the two groups of first side plates.

[0008] Among them, four groups of guide columns are arranged on the lower mold frame, and the second side plates are welded and fixed to the front and rear ends of the two groups of the supporting platforms, and the guide columns penetrate the second side plates and are slidably connected to the second side plates.

[0009] Wherein, a spring is sleeved on the guide column, one end of the spring is fixed to the lower mold frame, and the other end of the spring is fixed to the second side plate.

[0010] Wherein, the upper mold assembly includes a hydraulic drive assembly, and the hydraulic drive assembly is installed on the top of the top plate.

[0011] Among them, one end of the hydraulic drive component is connected to the upper template, and the four groups of columns respectively penetrate the corners of the upper template.

[0012] Wherein, the upright column is slidably connected to the upper template.

[0013] Wherein, a plurality of avoidance grooves for avoiding the positioning columns are provided on the lower end surface of the upper die seat.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The two groups of lower die bases and the two groups of upper die bases of the utility model together constitute two groups of stamping and forming positions. The overall stamping equipment can stamp out two groups of large-diameter thick-walled elbow forming parts at one time, thereby improving the stamping and forming efficiency of the stamping equipment.

[0016] 2. After the stamping process, the upper die seat of the utility model is driven by the hydraulic drive assembly to move up and reset, the molded part is wrapped on the punch, the hydraulic cylinder lifts the support platform to reset, and the support platform simultaneously lifts the molded part to separate the molded part from the punch, realizing rapid demoulding and convenient demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the bottom view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of placing the sheet material of the utility model;

[0020] Figure 4 This is a structural schematic diagram of the lower mold assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the punch of the utility model.

[0022] In the figure: 1, bottom plate; 2, top plate; 3, lower die assembly; 4, upper die assembly; 5, column; 6, sheet; 31, lower die frame; 32, lower die seat; 33, supporting platform; 34, hydraulic cylinder; 311, guide column; 312, spring; 321, punch; 331, through groove; 332, first side plate; 333, second side plate; 334, positioning column; 41, hydraulic drive assembly; 42, upper mold plate; 43, upper die seat; 431, molding cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: a large-diameter thick-wall elbow stamping equipment, including a bottom plate 1 and a top plate 2, the bottom plate 1 and the top plate 2 are connected by a column 5, a lower die assembly 3 is arranged on the bottom plate 1, and an upper die assembly 4 is arranged on the top plate 2, the lower die assembly 3 includes a lower die frame 31, two groups of lower die seats 32 and two groups of supporting platforms 33, the upper die assembly 4 includes two groups of upper die seats 43, a through groove 331 is opened on the supporting platform 33, and a plurality of positioning columns 334 are arranged on the supporting platform 33, the plurality of positioning columns 334 form a positioning area, and a sheet 6 is placed in the positioning area, hydraulic cylinders 34 are arranged on both sides of the bottom plate 1, and the hydraulic cylinders 34 are used to drive the supporting platform 33 to move axially.

[0025] Among them, the two groups of lower die bases 32 and the two groups of upper die bases 43 together constitute two groups of stamping and forming positions. The overall stamping equipment can stamp out two groups of large-diameter thick-walled elbow forming parts at one time, thereby improving the stamping and forming efficiency of the stamping equipment.

[0026] Among them, the sheet material 6 is positioned by multiple groups of positioning columns 334. When placing the sheet material 6, the sheet material 6 can be quickly placed at the designated position for stamping and forming, which effectively prevents the sheet material 6 from being offset and misplaced, and the loading and positioning is convenient and fast.

[0027] The lower end surface of the upper die seat 43 is provided with a molding cavity 431 , and the lower die seat 32 is provided with a punch 321 .

[0028] Among them, a first side plate 332 is welded and fixed on one side of the two groups of supporting platforms 33, and one end of the push rods of the two groups of hydraulic cylinders 34 are respectively fixed between the two groups of first side plates 332. The two groups of hydraulic cylinders 34 work synchronously and can drive the two groups of supporting platforms 33 to move axially synchronously.

[0029] Among them, four groups of guide columns 311 are arranged on the lower mold frame 31, and the second side plates 333 are welded and fixed at the front and rear ends of the two groups of support platforms 33, and the guide columns 311 penetrate the second side plates 333 and are slidably connected with the second side plates 333. The four groups of guide columns 311 play a guiding role. The two groups of support platforms 33 can move along the axial direction of the guide columns 311 under the drive of the hydraulic cylinder 34, limit the moving direction, and improve the positioning accuracy.

[0030] The guide column 311 is sleeved with a spring 312 , one end of the spring 312 is fixed to the lower mold frame 31 , and the other end of the spring 312 is fixed to the second side plate 333 , and the spring 312 is used for buffering during the axial movement of the support platform 33 .

[0031] Among them, the upper mold assembly 4 includes a hydraulic drive assembly 41, and the hydraulic drive assembly 41 is installed on the top of the top plate 2. The hydraulic drive assembly 41 includes a pump device, a valve group, a manifold group, an oil tank and an electric box, etc., to provide hydraulic power.

[0032] One end of the hydraulic drive assembly 41 is connected to the upper template 42 , and the four groups of columns 5 pass through the corners of the upper template 42 respectively.

[0033] The columns 5 are slidably connected to the upper mold plate 42 , and the four groups of columns 5 play a guiding role to limit the moving direction of the upper mold plate 42 , thereby improving the precision of the mold closing between the lower mold assembly 3 and the upper mold assembly 4 .

[0034] Among them, multiple groups of avoidance grooves for avoiding the positioning columns 334 are opened on the lower end surface of the upper mold base 43. When the lower mold assembly 3 and the upper mold assembly 4 are closed, the multiple groups of positioning columns 334 are embedded in the avoidance grooves.

[0035] Working principle: During stamping, two groups of sheet materials 6 are placed on two groups of supporting platforms 33 respectively, and the hydraulic drive component 41 drives the upper template 42 to move downward along the column 5, and the upper template 42 drives the upper die seat 43 to move downward, and the upper die seat 43 first contacts the supporting platform 33 and fixes the sheet material 6. Then, the upper die seat 43 continues to move downward under the drive of the hydraulic drive component 41, and at the same time, the hydraulic cylinder 34 drives the supporting platform 33 to move downward synchronously. During the downward movement, the punch 321 is ejected through the through groove 331, and under the joint action of the punch 321 and the forming cavity 431, the sheet material 6 is stamped and formed. After stamping and forming, the upper die seat 43 moves up and resets under the drive of the hydraulic drive component 41, and the formed part is wrapped on the punch 321. Then, the hydraulic cylinder 34 lifts and resets the supporting platform 33, and the supporting platform 33 simultaneously lifts the formed part to make the formed part separate from the punch 321, thereby achieving rapid demolding.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-caliber thick-wall elbow stamping device, comprising a bottom plate (1) and a top plate (2), characterized in that: The bottom plate (1) and the top plate (2) are connected via a column (5); a lower die assembly (3) is arranged on the bottom plate (1); an upper die assembly (4) is arranged on the top plate (2); the lower die assembly (3) comprises a lower die frame (31), two groups of lower die seats (32) and two groups of supporting platforms (33); the upper die assembly (4) comprises two groups of upper die seats (43); a through groove (331) is provided on the supporting platform (33); and a plurality of positioning columns (334) are provided on the supporting platform (33); the plurality of positioning columns (334) form a positioning area, and a sheet material (6) is placed in the positioning area; hydraulic cylinders (34) are provided on both sides of the bottom plate (1), and the hydraulic cylinders (34) are used to drive the supporting platform (33) to move axially.

2. A large-caliber thick-wall elbow stamping equipment according to claim 1, characterized in that: The lower end surface of the upper die seat (43) is provided with a molding cavity (431), and the lower die seat (32) is provided with a convex die (321).

3. The large-caliber thick-wall elbow stamping equipment according to claim 1 is characterized in that: A first side plate (332) is welded and fixed to one side of the two groups of support platforms (33), and one end of the push rods of the two groups of hydraulic cylinders (34) is respectively fixed to the two groups of first side plates (332).

4. The large-caliber thick-wall elbow stamping equipment according to claim 1 is characterized in that: Four groups of guide columns (311) are arranged on the lower mold frame (31), and second side plates (333) are welded and fixed to the front and rear ends of the two groups of support platforms (33), and the guide columns (311) penetrate the second side plates (333) and are slidably connected to the second side plates (333).

5. A large-caliber thick-wall elbow stamping equipment according to claim 4, characterized in that: The guide column (311) is sleeved with a spring (312), one end of the spring (312) is fixed to the lower mold frame (31), and the other end of the spring (312) is fixed to the second side plate (333).

6. The large-caliber thick-wall elbow stamping equipment according to claim 1 is characterized in that: The upper mold assembly (4) comprises a hydraulic drive assembly (41), and the hydraulic drive assembly (41) is installed on the top end of the top plate (2).

7. A large-caliber thick-wall elbow stamping equipment according to claim 6, characterized in that: One end of the hydraulic drive assembly (41) is connected to the upper template (42), and the four groups of columns (5) respectively penetrate the corners of the upper template (42).

8. The large-caliber thick-wall elbow stamping equipment according to claim 7 is characterized in that: The upright column (5) is slidably connected to the upper template (42).

9. The large-caliber thick-wall elbow stamping equipment according to claim 1 is characterized by: The lower end surface of the upper die seat (43) is provided with a plurality of avoidance grooves for avoiding the positioning columns (334).

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