Roller die quick-changing device

Abstract

The utility model provides a roller die quick-changing device which comprises a die piece set, the die piece set comprises a fixed die piece and a replaceable die piece, and the replaceable die piece is formed by splicing two independent semicircular die pieces. The end face, used for being matched with the fixed mold piece, of the replaceable mold piece and the end face, used for being matched with the replaceable mold piece, of the fixed mold piece are provided with positioning structures matched with each other. The device has the advantages of convenience and rapidness in die replacement, no influence on parameters such as a roller die gap, saving of subsequent debugging time, reduction of debugging difficulty, saving of labor cost and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field related to cold bending, in particular to a roller die quick-change die device. Background Art

[0002] In the cold bending industry, in order to save costs, one set of roller molds may be used to produce two or more products. When changing products, part of the roller molds need to be replaced to achieve the conditions for producing new products. How to quickly and efficiently replace part of the roller molds has always been an important research direction in the industry.

[0003] refer to Figure 1 As shown in the figure, the layout of the commonly used roller die production equipment in this industry is generally to install the die set on the main shaft. When the die set needs to be replaced, the pressure plate on the main shaft needs to be disassembled, and then the main shaft and the die set are completely lifted out of the bracket, and then reinstalled and debugged after the die change is completed. The overall replacement process is inefficient and labor-intensive. Frequent disassembly will cause the roller die gap to change. After each replacement, the equipment needs to be readjusted, which wastes time. At the same time, re-debugging will cause a large number of defective products, resulting in a waste of resources. Utility Model Content

[0004] In order to solve the shortcomings of the current technology, the utility model combines the existing technology and, based on practical applications, provides a roller mold quick mold changing device, which has the advantages of convenient and quick mold changing, no impact on parameters such as the roller mold gap, saving subsequent debugging time, reducing debugging difficulty, and saving labor costs.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A roller die quick-change die device comprises a die set, wherein the die set comprises a fixed die and a replaceable die, wherein the replaceable die is assembled from two independent semicircular die pieces, and mutually cooperating positioning structures are arranged on the end surface of the replaceable die for cooperating with the fixed die and on the end surface of the fixed die for cooperating with the replaceable die.

[0007] Furthermore, the positioning structure includes an annular protrusion arranged on the end surface of the semicircular mold piece and an annular groove arranged on the end surface of the fixed mold piece.

[0008] Furthermore, the positioning structure includes an annular groove arranged on the end surface of the semicircular mold piece and an annular protrusion arranged on the end surface of the fixed mold piece.

[0009] Furthermore, a keyway is provided on one of the semicircular dies of the replaceable die.

[0010] Furthermore, a plurality of bolt fixing holes are evenly arranged on the circumference of the end surface of the replaceable mold piece, and threaded holes adapted to the bolt fixing holes are arranged on the end surface of the fixed module.

[0011] Furthermore, the replaceable mold is arranged between two fixed molds, or the replaceable mold is arranged outside the fixed mold.

[0012] Furthermore, the quick-change mold device also includes a main shaft, the mold assembly is installed on the main shaft, and spacers are arranged at both ends of the mold assembly, wherein a limiting component for limiting the axial position of the spacer is arranged on one side of at least one end of the spacer.

[0013] Furthermore, the limiting assembly includes a spindle nut threadably matched with one end of the spindle.

[0014] Furthermore, a baffle is arranged on the outer side of the spacer sleeve, a bearing matched with the main shaft is arranged on the outer side of the baffle, a baffle ring is arranged on the outer side of the bearing, and the main shaft nut is arranged on the outer side of the baffle ring.

[0015] Furthermore, the bearing is a NU type cylindrical roller bearing, and the retaining plate and retaining ring are respectively pressed against both sides of the inner ring of the bearing.

[0016] Beneficial effects of the quick-change mold structure provided by the utility model:

[0017] 1. The utility model can adapt to different types of products by changing the shape of the replaceable die through the combination of a fixed die and a replaceable die. The replaceable die adopts an independent semicircular structure design and a positioning structure of the end face. The installation is convenient and quick. There is no need to hoist the entire spindle assembly, and the post-installation debugging and maintenance are also eliminated. The overall operation is simple and efficient.

[0018] 2. The utility model is convenient and quick to disassemble and assemble as a whole, and has good sealing performance after assembly. It is not only suitable for the need to quickly replace the replaceable mold piece in the middle, but also suitable for the situation where the mold piece on the edge needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the roller mold device of Example 1.

[0020] Figure 2 for Figure 1 Side view structural diagram.

[0021] Figure 3 for Figure 1 Enlarged view of the structure of part A in the middle.

[0022] Figure 4 This is a schematic diagram of the module assembly structure of Example 1.

[0023] Figure 5This is a cross-sectional view of the replaceable mold piece of Example 1.

[0024] Figure 6 This is the front view of the replaceable module of Example 1.

[0025] Figure 7 is a schematic diagram of the roller mold device of Example 2,

[0026] Figure 8 This is a schematic diagram of the module assembly structure of Example 2.

[0027] Fig. 9 This is a cross-sectional view of the replaceable mold piece of Example 2.

[0028] Fig.10 This is the front view of the replaceable module of Example 2.

[0029] In the figure: 1. Die set; 11. Fixed die; 111. Annular groove of fixed die; 112. Annular protrusion of fixed die; 12. Replaceable die; 121. Upper semicircular die; 122. Lower semicircular die; 123. Annular protrusion of replaceable die; 124. Annular groove of replaceable die; 125. Bolt mounting hole; 2. Spindle; 3. Upper pressure plate; 4. Spacer; 5. Baffle; 6. NU type cylindrical roller bearing; 7. Circlip; 8. Spindle nut. DETAILED DESCRIPTION

[0030] Now, the technical solution of the utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application. Example 1

[0031] This embodiment provides a roller die quick die change device, in which the die piece to be replaced is located in the middle position.

[0032] refer to Figure 1-Figure 6 As shown, the roller mold main body device in this embodiment mainly includes a bracket, a main shaft 2, and a die set 1. The die set 1 is installed on the main shaft 2, and the main shaft 2 is installed on the bracket. An upper pressure plate 3 is arranged on the top of the bracket.

[0033] In this embodiment, the die set 1 includes a fixed die 11 and a replaceable die 12. Figure 4 As shown, the replaceable mold 12 is located between the two fixed molds 11, and the quick-change mold refers to replacing the middle replaceable mold 12.

[0034] In this embodiment, the replaceable mold piece 12 is composed of an upper semicircular mold piece 121 and a lower semicircular mold piece 122 . The upper semicircular mold piece 121 and the lower semicircular mold piece 122 are two independent structures, which are assembled to form a complete replaceable mold piece 12 .

[0035] In this embodiment, semi-circular protrusions are processed on the end faces of the upper semicircular mold 121 and the lower semicircular mold 122, and the two are combined to form a complete replaceable mold annular protrusion 123, and a complete fixed mold annular groove 111 is processed on the end face of the fixed mold 11.

[0036] When replacing the replaceable mold 12, the above-mentioned structure of this embodiment first releases the limit assembly, after which the mold group 1 can move in the axial direction, and then lightly tap the mold to be replaced with a rubber hammer. When the mold is loose, take out the previous replaceable mold 12, take out the upper semicircular mold 121 and the lower semicircular mold 122 to be replaced, clamp the upper semicircular mold 121 and the lower semicircular mold 122 on the shaft, and make the replaceable mold annular protrusion 123 be clamped into the fixed mold annular groove 111 to achieve precise positioning of the replaceable mold 12, and then lock the limit assembly.

[0037] It should be noted that, in this embodiment, the replaceable mold piece 12 is installed on the main shaft 2 , so a corresponding keyway can be processed on the upper semicircular mold piece 121 to cooperate with the key on the main shaft 2 .

[0038] The above structure of the present embodiment allows for quick and easy replacement of the replaceable die 12, and accurate positioning, and no debugging is required after replacement.

[0039] In this embodiment, a limit assembly structure with simple operation is provided. Figure 3 As shown, the limiting assembly includes a spacer sleeve 4 arranged on one side of the die set 1, a baffle plate 5 is arranged on the outer side of the spacer sleeve 4, a NU-type cylindrical roller bearing 6 is arranged on the outer side of the baffle plate 5, a retaining ring 7 is arranged on the outer side of the NU-type cylindrical roller bearing 6, a spindle nut 8 is arranged on the outer side of the retaining ring 7, and the spindle nut 8 is screwed on the spindle 2. In this embodiment, the inner ring of the NU-type cylindrical roller bearing 6 is an independent structure, so after loosening the spindle nut 8, the retaining ring 7, the inner ring of the bearing, the baffle plate 5 and the spacer sleeve 4 can all move outward along the axial direction, so the axial position of the fixed die 11 can be adjusted to facilitate the removal or insertion of the replaceable die 12. Example 2

[0040] This embodiment provides a roller die quick-change die device, in which the die piece to be replaced is located at the edge.

[0041] refer to Figure 7-10As shown, in this embodiment, the replaceable mold 12 is located on the outside of the fixed mold 11, which is different from the structure of embodiment 1. In embodiment 1, the replaceable mold 12 is clamped and fixed between two fixed molds 11. In this embodiment, the replaceable mold 12 is only located at the edge, so a corresponding fastening structure needs to be set.

[0042] In this embodiment, a fixed mold annular protrusion 112 is set on the end face of the fixed mold 11, and the replaceable mold 12 also includes an independent upper semicircular mold 121 and a lower semicircular mold 122. The end faces of the upper semicircular mold 121 and the lower semicircular mold 122 are both processed with semicircular annular grooves. The two are combined to form a complete replaceable mold annular groove 124, and bolt mounting holes 125 are processed on the end faces of the upper semicircular mold 121 and the lower semicircular mold 122, and corresponding threaded holes are processed on the end face of the fixed mold 11.

[0043] In the structure of this embodiment, when replacing the mold, the limitation of the limit assembly is also released first, and then the screws between the fixed mold 11 and the replaceable mold 12 are removed, and the mold to be replaced is lightly tapped with a rubber hammer. After the mold is loosened, the original replaceable mold 12 is removed, and then the upper semicircular mold 121 and the lower semicircular mold 122 are installed.

[0044] Contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A roller die quick-change device, characterized in that: It includes a module group, which includes a fixed module and a replaceable module. The replaceable module is assembled from two independent semicircular modules. Mutually cooperating positioning structures are arranged on the end surface of the replaceable module for cooperating with the fixed module and on the end surface of the fixed module for cooperating with the replaceable module.

2. The roller die quick-change device according to claim 1, characterized in that: The positioning structure comprises an annular protrusion arranged on the end surface of the semicircular die and an annular groove arranged on the end surface of the fixed die.

3. The roller die quick-change device according to claim 1, characterized in that: The positioning structure comprises an annular groove arranged on the end surface of the semicircular die and an annular protrusion arranged on the end surface of the fixed die.

4. The roller die quick-change die device according to claim 1, characterized in that: A keyway is arranged on one of the semicircular dies of the replaceable die.

5. The roller die quick-change device according to claim 1, characterized in that: A plurality of bolt fixing holes are evenly arranged on the circumference of the end surface of the replaceable die, and threaded holes adapted to the bolt fixing holes are arranged on the end surface of the fixed die.

6. The roller die quick-change die device according to claim 1, characterized in that: The replaceable mold piece is arranged between two fixed mold pieces. Alternatively, the replaceable mold piece is arranged outside the fixed mold piece.

7. The roller die quick-change die device according to claim 1, characterized in that: The quick-change mold device also includes a main shaft, the mold assembly is installed on the main shaft, and spacers are arranged at both ends of the mold assembly, wherein a limiting component for limiting the axial position of the spacer is arranged on one side of at least one end of the spacer.

8. The roller die quick-change device according to claim 7, characterized in that: The limiting assembly comprises a main shaft nut threadably matched with one end of the main shaft.

9. The roller die quick-change die device according to claim 8, characterized in that: A baffle is arranged outside the spacer sleeve, a bearing matched with the main shaft is arranged outside the baffle, a baffle ring is arranged outside the bearing, and the main shaft nut is arranged outside the baffle ring.

10. The roller die quick-change die device according to claim 9, characterized in that: The bearing is a NU type cylindrical roller bearing, and the retaining plate and retaining ring are respectively pressed against both sides of the inner ring of the bearing.

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