Inner wall tensioning and shaping tool

Abstract

The utility model discloses an inner wall tensioning and shaping tool, which belongs to the field of shaping tools and comprises a base, a lower die is arranged on the base, a sliding groove is arranged on the upper end face of the lower die, two sliding blocks are arranged in the sliding groove in a guiding and sliding mode, and the two sliding blocks can move relatively in the sliding groove. Springs are arranged at the two ends of the two sliding blocks and the two ends of the sliding groove, and the two springs tend to make the two sliding blocks close to each other. Wedges are arranged above the two sliding blocks in a matched mode respectively, and the two sliding blocks can be driven to be away from each other when the wedges are pressed downwards. Long raised lines are integrally arranged on the upper end faces of the two sliding blocks, and the two long raised lines are arranged on the sides, close to the other sliding block, of the sliding blocks correspondingly; the sum of the widths of the two long protruding strips is smaller than the width of the workpiece inner frame. According to the structure, the inner frame of the workpiece can be shaped through external pulling force, the external pulling size is adjustable, the workpiece is convenient to place and position, and batch shaping is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of shaping tools, in particular to an inner wall expansion and pulling shaping tool. Background Art

[0002] The product targeted by this solution is a workpiece with an inner frame. Since the inner frame of the workpiece blank is prone to deformation, workers often need to trim the workpiece. The current trimming method is to use a tapered block to gradually press down from the outer end of the frame to the inside of the frame, and the deformation of the workpiece frame wall is trimmed by continuous tapping and pressing.

[0003] However, the above method, on the one hand, does not have a good grasp of the size, which makes subsequent processing and positioning difficult; on the other hand, due to the stamping method adopted, the conical block will wear against the inner wall of the workpiece inner frame, affecting the surface quality of the workpiece.

[0004] In view of the above problems, the present invention designs and manufactures an inner wall expansion and stretching shaping tool to overcome the above defects. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides an inner wall expansion and pulling shaping tool, which can use the external pulling force to shape the inner frame of the workpiece. The external pulling size is adjustable, and the workpiece is easy to place and position, which is convenient for batch shaping.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: an inner wall expansion and stretching shaping tool, comprising a base, a lower die is provided on the base, a slide groove is provided on the upper end surface of the lower die, two sliders are guided and slidable in the slide groove, and the two sliders can move relative to each other in the slide groove;

[0007] Springs are provided at both ends of the two sliders and the slide groove, and the two springs have a tendency to make the two sliders approach each other;

[0008] The two sliders are respectively provided with an inclined wedge above them, and the downward pressure of the inclined wedge can drive the two sliders to move away from each other;

[0009] The upper end surfaces of the two sliders are integrally provided with long convex strips, and the two long convex strips are respectively provided on one side of the slider close to the other slider;

[0010] The sum of the widths of the two long convex strips is smaller than the width of the inner frame of the workpiece.

[0011] Preferably, a positioning platform is provided on the lower mold at both ends of the two long convex strips respectively, and a positioning step is provided on one side of the two positioning platforms close to the other positioning platform, and the end face of the inner frame of the workpiece can be placed on the positioning step.

[0012] Preferably, the distance between the vertical surfaces of the two positioning steps is equal to the dimension of the workpiece in the length direction of the inner frame.

[0013] Preferably, the height of the long convex strip is greater than the height of the horizontal surface of the positioning step;

[0014] The height of the horizontal surface of the positioning step is greater than the height of the upper end surface of the slider.

[0015] Preferably, the length of the long convex strip is slightly smaller than the length of the inner frame of the workpiece.

[0016] Preferably, it also includes an upper mold, and the two inclined wedges are fixed at the bottom of the upper mold, and the upper mold can drive the inclined wedges to rise and fall.

[0017] Preferably, an anti-interference groove is provided at the bottom of the upper mold, and the anti-interference groove runs through the front and rear sides of the upper mold.

[0018] Preferably, the anti-interference groove is located between two inclined wedges.

[0019] Preferably, two limit blocks are provided on the lower mold corresponding to the two ends of the slide groove, and the limit blocks can limit the pressing height of the upper mold.

[0020] Preferably, the limit block is provided with a plurality of guide holes, and guide rods are provided at the bottom of the upper mold corresponding to the positions of the guide holes, and the upper mold is guided to rise and fall relative to the lower mold through the guide holes and the guide rods.

[0021] The benefits of this utility model are:

[0022] 1. The utility model changes the original "downward pressing force" used for shaping into "outward pulling force", which not only avoids damage to the inner wall of the inner frame of the workpiece, but also accurately controls the shaping size of the workpiece by controlling the size of the outward pulling.

[0023] 2. The present invention makes full use of the plane of the end face of the inner frame of the workpiece for positioning. Compared with the traditional positioning of the irregular surface of the workpiece away from the other end of the frame end face, positioning is more convenient, which can indirectly improve the shaping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an inner wall expansion and stretching shaping tool in use;

[0025] Figure 2 This is a main view of an inner wall expansion and shaping tool in use;

[0026] Figure 3 This is a schematic diagram of the utility model when it is used after the upper mold is removed;

[0027] Figure 4 This is a schematic diagram of the present invention after the upper mold is removed;

[0028] Figure 5This is a top view of the utility model after removing the upper mold;

[0029] Figure 6 This is a schematic diagram of a workpiece to be shaped according to the present invention.

[0030] In the figure: 1-base, 2-lower die, 3-anti-interference groove, 4-upper die, 5-limit block, 6-wedge, 7-slider, 8-positioning platform, 9-positioning step, 10-long convex strip, 11-spring, 12-guide hole. DETAILED DESCRIPTION

[0031] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0032] like Figures 1 to 6 As shown, an inner wall expansion and stretching shaping tool includes a base 1, a lower mold 2 is provided on the base 1, and a slide groove is provided on the upper end surface of the lower mold 2. Two sliders 7 are guided and slided in the slide groove, and the two sliders 7 can move relative to each other in the slide groove.

[0033] The utility model provides springs 11 at both ends of the two sliders 7 and the slide groove. The two springs 11 have a tendency to make the two sliders 7 approach each other. The two sliders 7 are respectively equipped with inclined wedges 6 above them. The downward pressure of the inclined wedges 6 can drive the two sliders 7 to move away from each other.

[0034] A long ridge 10 is integrally provided on the upper end surface of the two sliders 7. The length of the long ridge 10 is slightly smaller than the length of the inner frame of the workpiece. The two long ridges 10 are respectively provided on the slider 7 close to the other slider 7. The sum of the widths of the two long ridges 10 is smaller than the width of the inner frame of the workpiece. When shaping, the inner frame of the workpiece needs to be buckled on the two long ridges 10, and then the two long ridges 10 are driven away from each other with the help of the inclined wedge 6 and the slider 7, thereby realizing the shaping of the inner frame of the workpiece.

[0035] Specifically, a positioning platform 8 is provided on the lower mold 2 at both ends of the two long protrusions 10, and a positioning step 9 is provided on the side of the two positioning platforms 8 close to the other positioning platform 8. The horizontal plane of the positioning step 9 is lower than the upper end surface of the positioning platform 8. The end surface of the inner frame of the workpiece can be placed on the positioning step 9, that is, the end surface of the inner frame of the workpiece can be placed on the horizontal plane of the positioning step 9.

[0036] The distance between the vertical surfaces of the two positioning steps 9 is equal to the length of the workpiece in the inner frame direction, which facilitates the positioning of the workpiece. The height of the long ridge 10 is greater than the height of the horizontal surface of the positioning step 9, ensuring that the long ridge 10 can extend into the workpiece inner frame. The height of the horizontal surface of the positioning step 9 is greater than the height of the upper end surface of the slider 7, preventing the slider 7 from contacting the end surface of the workpiece inner frame. This minimizes the slider 7 from moving the workpiece, and instead uses the positioning step 9 to support the workpiece.

[0037] The present invention also includes an upper mold 4, two inclined wedges 6 are fixed at the bottom of the upper mold 4, the upper mold 4 can drive the inclined wedges 6 to rise and fall, and an anti-interference groove 3 is provided at the bottom of the upper mold 4, the anti-interference groove 3 runs through the front and back sides of the upper mold 4, and the anti-interference groove 3 is located between the two inclined wedges 6. The workpiece can be directly placed on the positioning platform 8 through the anti-interference groove 3.

[0038] Two limit blocks 5 are preferably provided on the lower mold 2 corresponding to the two ends of the slide groove. The limit blocks 5 can limit the downward pressing height of the upper mold 4. The limit blocks 5 are preferably provided with a plurality of guide holes 12. A guide rod is provided at the position corresponding to the guide hole 12 at the bottom of the upper mold 4. The upper mold 4 is guided to rise and fall relative to the lower mold 2 through the guide hole 12 and the guide rod.

[0039] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. In addition, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications and / or variations to the present invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims of this application.

Claims

1. An inner wall expansion and shaping tool, characterized in that: The base comprises a lower die, the upper end surface of the lower die is provided with a slide groove, the slide groove has two sliding blocks for guiding sliding, and the two sliding blocks can move relative to each other in the slide groove; Springs are provided at both ends of the two sliders and the slide groove, and the two springs have a tendency to make the two sliders approach each other; The two sliders are respectively provided with an inclined wedge above them, and the downward pressure of the inclined wedge can drive the two sliders to move away from each other; The upper end surfaces of the two sliders are integrally provided with long convex strips, and the two long convex strips are respectively provided on one side of the slider close to the other slider; The sum of the widths of the two long convex strips is smaller than the width of the inner frame of the workpiece.

2. The inner wall expansion and shaping tool according to claim 1, characterized in that: A positioning platform is respectively provided on the lower mold at both ends of the two long convex strips, and a positioning step is provided on one side of the two positioning platforms close to the other positioning platform, and the end face of the inner frame of the workpiece can be placed on the positioning step.

3. The inner wall expansion and shaping tool according to claim 2, characterized in that: The distance between the vertical surfaces of the two positioning steps is equal to the dimension of the workpiece in the length direction of the inner frame.

4. The inner wall expansion and shaping tool according to claim 2, characterized in that: The height of the long convex strip is greater than the height of the horizontal surface of the positioning step; The height of the horizontal surface of the positioning step is greater than the height of the upper end surface of the slider.

5. The inner wall expansion and shaping tool according to claim 1, characterized in that: The length of the long convex strip is slightly smaller than the length of the inner frame of the workpiece.

6. The inner wall expansion and shaping tool according to claim 1, characterized in that: It also includes an upper mold, and the two inclined wedges are fixed on the bottom of the upper mold. The upper mold can drive the inclined wedges to rise and fall.

7. The inner wall expansion and shaping tool according to claim 6, characterized in that: An anti-interference groove is provided at the bottom of the upper mold, and the anti-interference groove runs through the front and rear sides of the upper mold.

8. The inner wall expansion and shaping tool according to claim 7, characterized in that: The anti-interference groove is located between the two wedges.

9. The inner wall expansion and shaping tool according to claim 6, characterized in that: Two limit blocks are provided on the lower molds corresponding to the two ends of the slide groove, and the limit blocks can limit the pressing height of the upper mold.

10. The inner wall expansion and shaping tool according to claim 9, characterized in that: The limit block is provided with a plurality of guide holes, and the bottom of the upper die is provided with guide rods at positions corresponding to the guide holes. The upper die is guided to rise and fall relative to the lower die through the guide holes and the guide rods.

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