Die for manufacturing stainless steel ring

Abstract

The utility model discloses a die for manufacturing a stainless steel ring. The die comprises an upper die plate, a lower die plate, a pressure head, a hemming wheel and an air cylinder, the pressing head is installed on the air cylinder and gets close to or away from the upper template along with stretching and retracting of the air cylinder, the upper template is installed on the lower template and can relatively slide along the lower template, the tensioning structure is installed between the upper template and the lower template, and the stainless steel ring is arranged on the periphery of the upper template in a sleeving mode; the pressing head descends to extrude the upper die plate, the upper die plate is pressed to abut against the tensioning structure to move outwards along the lower die plate, the upper die plate opens the stainless steel ring, and the edge rolling wheel presses the upper edge of the stainless steel ring to achieve bending and rolling forming; and after the pressure head ascends, the upper template, the lower template and the tensioning structure recover to the initial state. When the die is used for manufacturing the steel ring, the stainless steel ring is sleeved on the periphery of the upper die plate, the spring is compressed under the pressure action of the pressure head, the steel ring is shaped and positioned under the stretching action of the upper die plate, and the edge rolling operation is performed through the external edge rolling wheel; and the steel ring is easy to sleeve or take out, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing molds, in particular to a mold for manufacturing stainless steel rings. Background Art

[0002] The existing mold for manufacturing stainless steel rims has a size that is tightly matched to the rims. During the production process, the rims are difficult to insert or remove, the assembly is time-consuming and labor-intensive, and the production efficiency is low. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and provide a mold for manufacturing stainless steel rings.

[0004] The utility model is realized through the following technical solutions: a mold for manufacturing stainless steel rims, comprising an upper template, a lower template, a pressure head, a curling wheel and a cylinder; the pressure head is installed on the cylinder and approaches or moves away from the upper template as the cylinder expands and contracts, the upper template is installed on the lower template and can slide relatively along it, a tensioning structure is installed between the upper template and the lower template, and the stainless steel rim is sleeved on the outer periphery of the upper template; the pressure head descends and squeezes the upper template, and the upper template is pressed and moves outward along the lower template against the tensioning structure, the upper template supports the stainless steel rim, and the curling wheel presses the upper edge of the stainless steel rim to realize bending and forming; after the pressure head rises, the upper template, the lower template and the tensioning structure return to their initial states.

[0005] The tensioning structure of this mold can ensure a stable matching relationship between the upper template and the lower template. When manufacturing steel rings, the upper template and the lower template can be moved by tensioning, thereby expanding the steel ring and allowing the curling wheel to bend the steel ring into shape; the pressure head can push the upper template to move outward to expand the steel ring. After the bending and forming is completed, the steel ring is withdrawn, and the upper and lower templates are reset to continue repeated production.

[0006] The lower template is provided with a slide groove, and the upper template is provided with a first protrusion located on the inner side and a second protrusion located on the outer side. An upper positioning groove is provided between the first and second protrusions, and a lower positioning groove is provided in the slide groove, which is recessed downward and opposite to the upper positioning groove. The tensioning structure is installed in the slot space formed between the lower and upper positioning grooves. The first and second protrusions are located in the slide groove and can slide along the slide groove. The slide groove is provided to limit the sliding range of the first and second protrusions of the upper template. The upper and lower positioning grooves cooperate to install the tensioning structure, and the cooperation of the two positioning grooves can achieve compression and reset of the tensioning structure.

[0007] The tensioning structure is a spring.

[0008] There are several upper templates, evenly distributed on the lower template, and there are several lower positioning grooves. Each upper template is provided with an upper positioning groove, and the number of the upper positioning grooves and the number of tensioning structures match the number of the lower positioning grooves.

[0009] The outer periphery of the upper template is raised upward to form a raised ring, and the stainless steel ring is bent around the raised ring toward the inner side of the steel ring under the pressure of the curling wheel.

[0010] A truncated cone is provided on the underside of the ram, and the diameter of the underside of the cone is smaller than the diameter of the upper side. A circular hole is formed between the upper templates, and the circular hole has a gradually expanding diameter from bottom to top. The diameter of the underside of the circular hole is smaller than the diameter of the upper side, and the diameter of the upper side of the circular hole is larger than the diameter of the underside of the cone. The gradually shrinking diameter structure of the circular hole can be matched with the truncated cone of the ram. When the ram is pressed down, the cone can press down along the inclined arc surface of the circular hole, pushing the upper template outward, thereby achieving the function of expanding the steel ring.

[0011] Compared with the prior art, the advantages of the present invention are: the mold is provided with a spring through the positioning groove between the two templates, which has compression and rebound effects. During manufacturing, the stainless steel ring is first put on the outer periphery of the upper template. Under the pressure of the pressure head, the spring is compressed, and the steel ring is shaped and positioned under the tensile action of the upper template, and is rolled into a circle by the external curling wheel to achieve the purpose of producing the product; after the pressure head rises, the mold can be quickly reset due to the rebound of the spring, and the steel ring can be easily taken out, and repeated production can be carried out; this mold can avoid the situation in which the steel ring is difficult to insert or remove in the production of existing molds, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model when the pressure head starts to press down;

[0014] Figure 3 This is a schematic structural diagram of an embodiment of the utility model in which a pressing head opens an upper template and uses a curling wheel to perform curling;

[0015] Figure 4 This is a structural schematic diagram of the rising pressure head in an embodiment of the utility model.

[0016] The meanings of the reference numerals in the figure are: 1. Upper template; 11. First protrusion; 12. Second protrusion; 13. Upper positioning groove; 14. Raised ring; 15. Round hole; 2. Lower template; 21. Slide groove; 22. Lower positioning groove; 3. Press head; 31. Round table; 4. Curling wheel; 5. Cylinder; 6. Tensioning structure; 7. Stainless steel ring. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0018] Example

[0019] See Figures 1 to 4 , which is a mold for manufacturing stainless steel rims, including an upper template 1, a lower template 2, a pressing head 3, a curling wheel 4 and a cylinder 5; the pressing head 3 is installed on the cylinder 5 and approaches or moves away from the upper template 1 as it expands and contracts, the upper template 1 is installed on the lower template 2 and can slide relatively along it, a tensioning structure 6 is installed between the upper template 1 and the lower template 2, and the stainless steel rim 7 is sleeved on the outer circumference of the upper template 1; the pressing head 3 descends and squeezes the upper template 1, and the upper template 1 is pressed and moves outward along the lower template 2 against the tensioning structure 6, the upper template 1 supports the stainless steel rim 7, and the curling wheel 4 presses the upper edge of the stainless steel rim 7 to achieve bending and forming; after the pressing head 3 rises, the upper template 1, the lower template 2 and the tensioning structure 6 return to their initial state.

[0020] The tensioning structure 6 of the mold can ensure a stable matching relationship between the upper template 1 and the lower template 2. When manufacturing the steel ring, the upper template 1 and the lower template 2 can be moved by tensioning, thereby stretching the steel ring and allowing the curling wheel 4 to bend the steel ring; the pressure head 3 can push the upper template 1 to move outward to stretch the steel ring. After the bending and forming is completed, the steel ring is withdrawn, the upper template 1 and the lower template 2 are reset, and repeated production is continued.

[0021] The lower template 2 is provided with a slide groove 21. The upper template 1 is provided with a first protrusion 11 located on the inner side and a second protrusion 12 located on the outer side. An upper positioning groove 13 is provided between the first and second protrusions 11, 12. A lower positioning groove 22 is provided in the slide groove 21, which is recessed downward. The lower positioning groove 22 is positioned opposite the upper positioning groove 13. The tensioning structure 6 is installed in the slot space formed between the lower positioning groove 22 and the upper positioning groove 13. The first and second protrusions 11, 12 are located in the slide groove 21 and can slide along the slide groove 21. The slide groove 21 is provided to limit the sliding range of the first and second protrusions 11, 12 of the upper template 1. The upper positioning groove 13 cooperates with the lower positioning groove 22 to install the tensioning structure 6. The cooperation of the two positioning grooves can achieve compression and reset of the tensioning structure 6.

[0022] The tensioning structure 6 is a spring.

[0023] There are several upper templates 1, evenly distributed on the lower template 2, and several lower positioning grooves 22. Each upper template 1 is provided with an upper positioning groove 13, and the number of upper positioning grooves 13 and the number of tensioning structures 6 match the number of lower positioning grooves 22.

[0024] The outer periphery of the upper template 1 is raised upward to form a raised ring 14 , and the stainless steel ring 7 is bent around the raised ring 14 toward the inner side of the steel ring under the pressure of the crimping wheel 4 .

[0025] A truncated cone 31 is provided on the lower side of the ram 3. The diameter of the lower side of the truncated cone 31 is smaller than that of the upper side. A circular hole 15 is formed between the upper templates 1. The circular hole 15 is a hole with a gradually expanding diameter from bottom to top. The diameter of the lower side of the circular hole 15 is smaller than that of the upper side, and the diameter of the upper side of the circular hole 15 is larger than the diameter of the lower side of the truncated cone 31. The gradually decreasing diameter structure of the circular hole 15 can cooperate with the truncated cone 31 of the ram 3. When the ram 3 is pressed down, the truncated cone 31 can be pressed down along the inclined arc surface of the circular hole 15, pushing the upper template 1 outward, thereby achieving the function of expanding the steel ring.

[0026] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A mold for manufacturing stainless steel rings, characterized by: It includes an upper template, a lower template, a pressure head, a curling wheel and a cylinder; the pressure head is installed on the cylinder and approaches or moves away from the upper template as the cylinder expands and contracts, the upper template is installed on the lower template and can slide relatively along it, a tensioning structure is installed between the upper template and the lower template, and a stainless steel ring is sleeved on the outer periphery of the upper template; the pressure head descends and squeezes the upper template, and the upper template is pressed and moves outward along the lower template against the tensioning structure, the upper template holds open the stainless steel ring, and the curling wheel presses the upper edge of the stainless steel ring to achieve bending and forming; after the pressure head rises, the upper template, lower template and tensioning structure return to their initial state.

2. The mold for manufacturing a stainless steel ring according to claim 1, characterized in that: The lower template is provided with a sliding groove, and the inner side of the upper template is provided with a first protrusion located on the inner side and a second protrusion located on the outer side. An upper positioning groove is provided between the first protrusion and the second protrusion, and a lower positioning groove formed by a downward depression is provided in the sliding groove. The lower positioning groove is positioned opposite to the upper positioning groove, and the tensioning structure is installed in the slot space formed between the lower positioning groove and the upper positioning groove; the first protrusion and the second protrusion are located in the sliding groove and can slide along the sliding groove.

3. The mold for manufacturing a stainless steel ring according to claim 1, characterized in that: The tensioning structure is a spring.

4. The mold for manufacturing a stainless steel ring according to claim 2, characterized in that: There are several upper templates, evenly distributed on the lower template, and there are several lower positioning grooves. Each upper template is provided with an upper positioning groove, and the number of the upper positioning grooves and the number of tensioning structures match the number of the lower positioning grooves.

5. The mold for manufacturing a stainless steel rim according to claim 1, characterized in that: The outer periphery of the upper template is raised upward to form a raised ring, and the stainless steel ring is bent around the raised ring toward the inner side of the steel ring under the pressure of the curling wheel.

6. The mold for manufacturing a stainless steel ring according to claim 4, characterized in that: A frustum is provided on the lower side of the pressure head, and the diameter of the lower side of the frustum is smaller than the diameter of its upper side. A circular hole is formed between the upper templates, and the circular hole is a hole with a gradually expanding diameter from bottom to top. The diameter of the lower side of the circular hole is smaller than the diameter of its upper side, and the diameter of the upper side of the circular hole is larger than the diameter of the lower side of the frustum.

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