Stroke limiting structure for material lifting plate of stamping progressive die

Abstract

The utility model relates to the technical field of dies, in particular to a stroke limiting structure for a material lifting plate of a stamping progressive die. Comprising a lower die base, a guide sleeve is arranged on the lower die base, and a guide column slides in the guide sleeve; a material lifting plate is arranged at the top of the guide column, and a guide ruler is arranged at the top of the material lifting plate; one side of the guide pillar is provided with a concave part, one end of the concave part and the surface of the guide pillar form an upper limiting part, and the other end of the concave part and the surface of the guide pillar form a lower limiting part; a stroke pressing block installed on the lower die base is arranged above the lower limiting part, and the end of the stroke pressing block is located between the upper limiting part and the lower limiting part and used for limiting the stroke of the material lifting plate. And the guide sleeve is fixed on the lower die holder through the stroke pressing block and the guide sleeve pressing block. Stroke limiting and the guide pillar are designed into a whole, so that the obtained structure space is minimum, and meanwhile, the structure strength is ensured; and the material lifting plate is limited in a smaller progressive die.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a stroke limiting structure of a material lifting plate of a stamping progressive die. Background Art

[0002] In a stamping progressive die, the function of the lifting plate determines whether the die can be successfully mass-produced. In some smaller progressive dies, due to space constraints, it is impossible to arrange an independent travel limit structure.

[0003] In response to this problem, the R&D department held discussions and research and concluded that it was necessary to use the smallest space possible to limit the travel of the lifting plate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a stroke limiting structure for a lifting plate of a stamping progressive die in view of the deficiencies in the prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A stroke limit structure for a lifting plate of a stamping progressive die, comprising a lower die base, a guide sleeve being provided on the lower die base, a guide column sliding inside the guide sleeve; a lifting plate being provided on the top of the guide column, and a guide ruler being provided on the top of the lifting plate; a recessed portion being provided on one side of the guide column, an upper limit portion being formed between one end of the recessed portion and the surface of the guide column, and a lower limit portion being formed between the other end of the recessed portion and the surface of the guide column; a stroke pressing block installed on the lower die base is provided above the lower limit portion, and an end of the stroke pressing block is between the upper limit portion and the lower limit portion to limit the stroke of the lifting plate; the guide sleeve is fixed to the lower die base by the stroke pressing block and the guide sleeve pressing block.

[0007] Furthermore, the guide sleeve is installed in the guide sleeve hole of the lower die seat, and the bottom surface of the guide sleeve boss of the guide sleeve contacts and cooperates with the step portion of the lower die seat; the guide sleeve boss and the guide sleeve surface form a clamping portion, and the stroke pressure block and the guide sleeve pressure block are respectively contacted and pressed with the clamping portion.

[0008] Furthermore, the top surface of the guide post boss of the guide post is in contact with the lifting plate for limiting positioning.

[0009] Furthermore, the width of the lower limit portion is greater than the width of the upper limit portion.

[0010] Furthermore, the inner wall of the top opening of the guide sleeve is a rounded corner portion.

[0011] Furthermore, the outer wall of the bottom opening of the guide sleeve is a chamfered portion.

[0012] The advantages of the stroke limit structure of the lifting plate of the stamping progressive die of the utility model are: the stroke limit and the guide column are designed as one, so that the structural space can be minimized while ensuring the structural strength; and the lifting plate can be limited in a relatively small progressive die. In the stroke limit of the lifting plate, the lower concave part and the upper concave part in the concave part on the side of the guide column are used, and the guide column is limited by the stroke pressure block and the upper concave part when it moves downward, and by the stroke pressure block and the lower concave part when it moves upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model in a closed state;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model in an open state;

[0015] Figure 3 This is a schematic diagram of the guide column structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the guide sleeve structure of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] like Figure 1-4 As shown:

[0023] A stroke limit structure for a lifting plate of a stamping progressive die comprises a lower die base 1, a guide sleeve 4 is provided on the lower die base 1, a guide column 3 is slidably arranged in the guide sleeve 4; a lifting plate 6 is provided on the top of the guide column 3, and a guide ruler 7 is provided on the top of the lifting plate 6; a recessed portion 12 is provided on one side of the guide column 3, an upper limit portion 12-1 is formed between one end of the recessed portion 12 and the surface of the guide column 3, and a lower limit portion 12-2 is formed between the other end of the recessed portion 12 and the surface of the guide column 3; a stroke pressing block 2 installed on the lower die base 1 is provided above the lower limit portion 12-2, and the end of the stroke pressing block 2 is between the upper limit portion 12-1 and the lower limit portion 12-2 to limit the stroke of the lifting plate 6; the guide sleeve 4 is fixed to the lower die base 1 by the stroke pressing block 2 and the guide sleeve pressing block 5; the upper die base structure is a conventional structure, the punch 11 is installed inside the clamping plate 9, and the stripping plate 8 unloads with a nitrogen spring 10.

[0024] The guide sleeve 4 is installed in the guide sleeve hole 1-1 of the lower die base 1, and the bottom surface of the guide sleeve boss 4-1 of the guide sleeve 4 contacts and cooperates with the step portion 1-2 of the lower die base 1; the guide sleeve boss 4-1 and the surface of the guide sleeve 4 form a clamping portion 4-2, and the stroke pressure block 2 and the guide sleeve pressure block 5 are respectively in contact and cooperate with the clamping portion 4-2 for clamping.

[0025] The top surface of the guide post boss 3 - 1 of the guide post 3 is in contact with the lifting plate 6 for limiting position.

[0026] The width of the lower limit portion 12-2 is greater than the width of the upper limit portion 12-1. Figure 3 As shown in FIG, the width of the lower recessed portion 2-2 is 2 mm, and the width of the upper limit portion 12-1 is 1 mm.

[0027] The inner wall of the top opening of the guide sleeve 4 is a rounded corner portion 4-3.

[0028] The outer wall of the bottom opening of the guide sleeve 4 is a chamfered portion 4-4.

[0029] When in use, the mold moves downward, the stripper plate 8 presses the material belt, the rear end pressure source is the nitrogen spring 10, the mold continues to move downward, the stripper plate 8 presses the lifting plate 6 to move downward, the mold continues to move downward, the lifting plate 6 moves downward to the right position, the mold continues to move downward, and the punch 11 completes the blanking until the bottom dead center of the mold. The mold moves upward, the punch 11 uses the stripper plate 8 to unload the material, the mold continues to move upward, the stripper plate 8 and the lifting plate 6 move upward synchronously until the lifting plate travels the entire travel, the travel pressure block 2 presses the lower limit portion 12-2 on the guide column 3, and the lifting plate travel limit is completed.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stroke limit structure for a material lifting plate of a stamping progressive die, characterized in that: It comprises a lower die base (1), the lower die base (1) is provided with a guide sleeve (4), and a guide post (3) is slidably disposed in the guide sleeve (4); A material lifting plate (6) is provided on the top of the guide column (3), and a guide ruler (7) is provided on the top of the material lifting plate (6); A recessed portion (12) is provided on one side of the guide column (3); an upper limit portion (12-1) is formed between one end of the recessed portion (12) and the surface of the guide column (3); and a lower limit portion (12-2) is formed between the other end of the recessed portion (12) and the surface of the guide column (3); A stroke pressing block (2) mounted on the lower die seat (1) is provided above the lower limit portion (12-2); an end of the stroke pressing block (2) is located between the upper limit portion (12-1) and the lower limit portion (12-2) to limit the stroke of the lifting plate (6); The guide sleeve (4) is fixed on the lower die base (1) by a stroke pressing block (2) and a guide sleeve pressing block (5).

2. The stroke limiting structure of the material lifting plate of a stamping progressive die according to claim 1 is characterized in that: The guide sleeve (4) is installed in the guide sleeve hole (1-1) of the lower die seat (1), and the bottom surface of the guide sleeve boss (4-1) of the guide sleeve (4) is in contact with the step portion (1-2) of the lower die seat (1); The guide sleeve boss (4-1) and the guide sleeve (4) have a clamping portion (4-2) formed on their surfaces, and the travel clamping block (2) and the guide sleeve clamping block (5) are respectively in contact with and fitted with the clamping portion (4-2) for clamping.

3. The stroke limiting structure of the material lifting plate of a stamping progressive die according to claim 1 is characterized in that: The top surface of the guide post boss (3-1) of the guide post (3) is in contact with the material lifting plate (6) for limiting positioning.

4. The stroke limiting structure of the material lifting plate of a stamping progressive die according to claim 1 is characterized in that: The width of the lower limit portion (12-2) is greater than the width of the upper limit portion (12-1).

5. The stroke limiting structure of the material lifting plate of a stamping progressive die according to claim 1 is characterized in that: The inner wall of the top opening of the guide sleeve (4) is a rounded corner portion (4-3).

6. The stroke limiting structure of the material lifting plate of a stamping progressive die according to claim 1 is characterized in that: The outer wall of the bottom opening of the guide sleeve (4) is a chamfered portion (4-4).

Images