CN211757766U

CN211757766U - Inner diameter expander

Info

Publication number: CN211757766U
Application number: CN202020156879.XU
Authority: CN
Inventors: 江林俊; 许源庆; 江钰婷
Original assignee: Dongguan Haozhun Metal Products Co ltd
Current assignee: Dongguan Haozhun Metal Products Co ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2020-10-27
Anticipated expiration: 2030-02-07

Abstract

The utility model provides an internal diameter expander relates to extrusion plastic equipment technical field. The technical problems of inaccurate workpiece positioning and unstable inner diameter size in the prior art are solved. It includes the mount, the expansion mold insert, needle and jacking device are inlayed in the expansion, be provided with stress surface and compressive plane on the expansion mold insert, the work piece cover is established on the expansion mold insert, the expansion mold insert sets up outside the needle is inlayed in the expansion, the mount includes panel and diving board, the below at the diving board is placed to the jacking device, the ascending jacking device makes diving board rebound up move and drive the expansion and inlay needle rebound, the expansion is inlayed the needle and can be simultaneously extrudeed all stress surfaces so that all expansion mold inserts slide so that all compressive planes extrude the plastic to the work piece simultaneously along the direction of keeping away from the expansion on the horizontal direction, the atress in the work piece plastic process is more even, the internal diameter size is more stable, and receive extrusion back outward appearance no vestige, plastic process degree is higher, it is simpler to operate automation, and the work efficiency is improved.

Description

Inner diameter expander

Technical Field

The utility model belongs to the technical field of extrusion plastic equipment technique and specifically relates to an internal diameter expander is related to.

Background

The workpiece with the circular ring is usually processed from raw materials through multiple processes to obtain the circular ring with low precision, so the inner diameter of the circular ring needs to be shaped before the workpiece is finished to ensure that the product has no deformation.

The applicant has found that the prior art has at least the following technical problems: the existing jig for extruding the circular ring type workpiece is inconvenient to operate and take workpiece products and easy to misplace, meanwhile, the workpiece products have the problem of uneven stress, and the inner diameter of the finally obtained product is unstable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an internal diameter expander to solve among the prior art the work piece location inaccurate, the unstable technical problem of internal diameter size. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an inner diameter expander comprises a fixing frame, expansion insert pieces, expansion insert pins and a jacking device, wherein the number of the expansion insert pieces is a plurality, the upper part of each expansion insert piece is provided with a stress surface and a circular arc-shaped extrusion surface, a workpiece is sleeved on all the expansion insert pieces, the inner walls of the workpiece are close to all the extrusion surfaces, all the expansion insert pieces are arranged outside the expansion insert pins in a surrounding manner, and the outer walls of the expansion insert pins are close to all the stress surfaces;

the fixing frame comprises a panel and an elastic plate, a sliding groove is formed in the panel, the lower part of each expansion insert is embedded in the sliding groove and can slide in the sliding groove along the horizontal direction, the elastic plate is arranged below the panel and is movably connected with the panel, and the bottom end of each expansion insert pin is fixed to the top of the elastic plate;

the jacking device is placed below the elastic plate, the jacking device jacks the elastic plate upwards to enable the elastic plate to move upwards and drive the expansion insert pins to move upwards, and the expansion insert pins can simultaneously press all the stress surfaces to enable all the expansion insert pins to slide in the horizontal direction along the direction far away from the expansion insert pins so that all the pressing surfaces can simultaneously press and shape the workpiece.

Preferably, the expansion insert comprises a first constant diameter section, a second constant diameter section and a third constant diameter section which are integrally connected, the panel comprises an upper panel and a lower panel which are fixedly connected together, a first stepped groove is formed in the upper panel, the first constant diameter section is located outside the upper panel, the second constant diameter section and the third constant diameter section are arranged in the first stepped groove, a first through hole for the expansion insert pin to penetrate through is formed in the lower panel, and the radius of the third constant diameter section is larger than that of the first through hole.

Preferably, the number of the expansion inserts is four, and the extrusion surface of each expansion insert is a quarter arc surface.

Preferably, the bottom of the expansion insert pin is provided with a sliding part, and the elastic plate is provided with a slideway for the sliding part to slide.

Preferably, still include height adjusting device, height adjusting device includes adjusting screw and fastening structure, run through on the diving board and seted up the first screw hole of a plurality of, adjusting screw with first screw hole threaded connection and can adjust its top with the relative height between the top surface of diving board, fastening structure can fix adjusting screw's position or remove fixedly.

Preferably, the elastic plate is further provided with a second threaded hole perpendicular to the length direction of the first threaded hole at the first threaded hole, the first threaded hole is crosswise connected with the second threaded hole, the fastening structure comprises a fastening screw, and the fastening screw is in threaded connection with the second threaded hole and can be abutted against the adjusting screw.

Preferably, the fixing frame further comprises a base and two supporting plates, the bottoms of the two supporting plates are connected to the top of the base, and the two ends of the panel are respectively connected to the tops of the two supporting plates.

Preferably, the fixing frame further comprises two limiting plates connected to the base, and two ends of the elastic plate are respectively located above the two limiting plates.

Preferably, a demoulding mechanism is arranged between the panel and the elastic plate, the demoulding mechanism comprises a spring, a plurality of mounting holes are formed in the bottom of the panel, one spring is connected in each mounting hole, and the other end of each spring is in contact with the top surface of the elastic plate.

Preferably, the panel runs through and has seted up a plurality of second ladder groove, run through on the diving board and seted up with second ladder groove position corresponds and the same through-hole of quantity, every corresponds the second ladder groove with all be provided with a guide post between the through-hole, the middle part of guide post is provided with the stop part.

The utility model provides a pair of internal diameter expander, including mount, expansion mold insert, expansion inlay needle and jacking device, the quantity of expansion mold insert is a plurality of, the upper portion of every expansion mold insert all is provided with a stress surface and a convex compressive plane, the work piece cover is established on all expansion mold inserts and the inner wall of work piece is close to all compressive planes, all expansion mold inserts surround to set up and inlay the outside of needle and the outer wall of expansion mold insert is close to all stress surfaces in the expansion, make the product location stable, need not to adjust well, and the operation is taken more conveniently;

the below at the diving board is placed to the jacking device, the ascending jacking of jacking device bullet board enables the diving board rebound and drives the expansion and inlay needle rebound, the needle can be extruded simultaneously to the expansion and inlay all stress surfaces so that all expansion mold inserts slide so that all squeeze surfaces extrude the plastic to the work piece simultaneously along the direction of keeping away from the expansion and inlaying needle on the horizontal direction, the atress in the work piece plastic process is more even, effective control internal diameter size makes it more stable, and receive and extrude the back outward appearance and do not have the vestige, plastic process automation degree is higher, it is more simple to operate, and the work efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an embodiment of the invention;

FIG. 2 is a view showing a combination of a panel, an expansion insert and a guide post according to an embodiment of the present invention;

fig. 3 is a bottom view of the top panel in an embodiment of the present invention;

FIG. 4 is a combined structure diagram of the springboard, the expanding insert pin and the guide post according to the embodiment of the present invention;

FIG. 5 is a view showing a combined structure of the insert, the insert and the workpiece according to the embodiment of the present invention;

FIG. 6 is a view showing a combination structure of the insert and the insert according to the embodiment of the present invention;

fig. 7 is a view of an embodiment of the present invention;

fig. 8 is a perspective view of the embodiment of the present invention;

fig. 9 is a structural view of the expanding insert according to the embodiment of the present invention.

In the figure 1, a fixing frame; 11. a panel; 111. a sliding groove; 112. mounting holes; 113. a second stepped groove; 114. an upper panel; 1141. a first step groove; 115. a lower panel; 1151. a first through hole; 12. a spring plate; 121. a slideway; 122. a first threaded hole; 123. a second threaded hole; 124. a second through hole; 13. a base; 14. a support plate; 15. a limiting plate;

2. expanding the insert; 21. extruding surface; 22. a stress surface; 23. a first diameter section; 24. a second equal-diameter section; 25. a third constant diameter section;

3. expanding the insert pin; 31. a sliding part;

4. a jacking device;

5. a workpiece;

6. a height adjustment device; 61. adjusting screws; 62. a fastening structure; 621. fastening screws;

8. a guide post; 81. a blocking portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on those shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1 to 9, the present invention provides an inside diameter expander, including a fixing frame 1, a plurality of expansion inserts 2, an expansion insert 3 and a jacking device 4, the number of the expansion inserts 2 is several, the upper portion of each expansion insert 2 is provided with a stress surface 22 and a circular arc-shaped extrusion surface 21, a workpiece 5 is sleeved on all the expansion inserts 2, the inner wall of the workpiece 5 is close to all the extrusion surfaces 21, all the expansion inserts 2 surround the expansion insert 3 and the outer wall of the expansion insert 3 is close to all the stress surfaces 22, in this embodiment, the expansion insert 3 is preferably a cone-like structure, the inner wall of the expansion insert 2 is also in a cone-like shape, the design of the expansion insert 2 and the expansion insert 3 makes the product positioning stable, no alignment is needed, and the operation and taking are more convenient;

the fixing frame 1 comprises a panel 11 and an elastic plate 12, a sliding groove 111 is arranged in the panel 11, the lower part of each expansion insert 2 is embedded in the sliding groove 111 and can slide in the sliding groove 111 along the horizontal direction, the elastic plate 12 is arranged below the panel 11 and is movably connected with the panel 11, and the bottom end of each expansion insert 3 is fixed at the top of the elastic plate 12;

jacking device 4 places in the below of diving board 12, jacking device 4 upwards jacking diving board 12 enables diving board 12 and upwards moves and drives the expansion and inlay needle 3 rebound, the expansion is inlayed needle 3 and can be extruded simultaneously all stress surface 22 so that all expansion mold inserts 2 slide so that all pressing surface 21 extrude the plastic to work piece 5 simultaneously along the direction of keeping away from the expansion and inlaying needle 3 on the horizontal direction, the atress of work piece 5 in the plastic process is even, effective control internal diameter size makes it more stable, and receive the extrusion back outward appearance no trace, plastic process automation degree is higher, it is simpler to operate, and the work efficiency is improved.

As an alternative embodiment, the expansion insert 2 includes a first constant diameter section 23, a second constant diameter section 24 and a third constant diameter section 25 which are integrally connected, the panel 11 includes an upper panel 114 and a lower panel 115, wherein the upper panel 114 and the lower panel 115 are detachably connected together by two bolts, the upper panel 114 is provided with a first stepped groove 1141, the expansion insert 2 is inserted into the first stepped groove 1141, the first constant diameter section 23 is located outside the upper panel 114 so that the workpiece 5 can be completely sleeved outside the upper panel, the second constant diameter section 24 is located inside a small diameter section of the first stepped groove 1141, the third constant diameter section 25 is located inside a large diameter section of the first stepped groove 1141, the lower panel 115 is provided with a first through hole 1151 through which the expansion insert 3 is inserted, an upper portion of the expansion insert 3 is surrounded by a plurality of expansion inserts 2 after passing through the first through hole 1151, a radius of the third constant diameter section 25 is larger than a radius of the first through hole 1151, finally, the bottom plane of the small-diameter section of the first stepped groove 1141, the inner wall of the large-diameter section of the first stepped groove 1141 and the upper surface of the lower surface plate 115 together define a sliding groove 111, the third constant-diameter section 25 can slide in the sliding groove 111 in the horizontal direction, and the extended insert 2 can be taken down by removing the connection between the upper surface plate 114 and the lower surface plate 115, so that the extended insert 2 can be conveniently detached and replaced;

it should be noted that in this example, all the openings of the lower panel 115 except the first through hole 1151 are formed after extending the openings of the upper panel 114, the apertures of the openings of the lower panel 115 except the first through hole 1151 are the same as the corresponding openings of the upper panel 114, the first through hole 1151 alone corresponds to the first step groove 1141 of the upper panel 114, and the first through hole 1151 and the first step groove 1141 are not the same in size.

As an alternative embodiment, the number of the expansion inserts 2 is four, the pressing surface 21 of each expansion insert 2 is a quarter arc surface, and the pressing surfaces 21 of the four expansion inserts 2 simultaneously apply pressing force to the inner wall of the workpiece 5, so that the force is more uniformly applied and the size is more stable.

As an alternative embodiment, since all the components of the inner diameter expander mentioned in this embodiment are detachably connected, and the expanding insert 2 and the expanding insert 3 can be replaced in a set according to the specification and size of the workpiece 5, the sliding portion 31 is provided at the bottom of the expanding insert 3, and the slide rail 121 for sliding the sliding portion 31 is provided on the spring plate 12, so that the bottom of the expanding insert 3 can slide into the slide rail 121 from the outside of the spring plate 12 through the cooperation of the sliding portion 31 and the slide rail 121, thereby facilitating the installation and replacement of the expanding insert 3, and limiting the relative displacement between the expanding insert 3 and the spring plate 12 in the vertical direction, while the upper portion of the expanding insert 3 is entirely located among the four expanding inserts 2 and surrounded by the expanding insert 2, and the displacement thereof in the horizontal direction is actually small.

As an optional embodiment, the height adjusting device 6 is further included, the height adjusting device 6 includes an adjusting screw 61 and a fastening structure 62, the elastic plate 12 is provided with a plurality of first threaded holes 122, the number of the first threaded holes 122 in this embodiment is preferably four, the adjusting screw 61 is in threaded connection with the first threaded hole 122, and the top end of the adjusting screw 61 can be higher than the first threaded hole 122, so that the relative height between the top of the adjusting screw 61 and the top surface of the elastic plate 12 can be adjusted, the elastic plate 12 can be lifted by the lifting device 4, the top of the adjusting screw 61 is a component which is firstly contacted with the bottom of the panel 11, so that the final lifting height of the elastic plate 12 can be controlled by adjusting the relative height between the adjusting screw 61 and the top surface of the elastic plate 12, and different lifting heights can be set for different specifications of the expansion inserts 2 and the expansion insert pins 3, the fastening structure 62 can fix or unfirm the position of the adjustment screw 61, so that the position of the adjustment screw 61 is more accurate, and the change due to repeated jacking stress is avoided.

As an optional embodiment, the elastic plate 12 further has a second threaded hole 123 perpendicular to the length direction of the first threaded hole 122 at the first threaded hole 122, the first threaded hole 122 and the second threaded hole 123 are cross-connected, the fastening structure 62 includes a fastening screw 621, the fastening screw 621 is in threaded connection with the second threaded hole 123 and can abut against the adjusting screw 61, and the position of the adjusting screw 61 is maintained by tightening the fastening screw 621, so that the position is not changed by high-frequency jacking operation and stress.

As an optional implementation manner, the fixing frame 1 further includes a base 13 and two supporting plates 14, the bottoms of the two supporting plates 14 are connected to the top of the base 13, the two ends of the panel 11 are respectively connected to the tops of the two supporting plates 14, a plurality of bolt holes are respectively opened on the panel 11, the base 13, and the supporting plates 14 and are connected together through bolts to form a complete structure of the fixing frame 1, and the jacking device 4 can be placed on the upper surface of the base 13 and correspondingly placed below the elastic plate 12.

As optional embodiment, mount 1 is still including connecting two limiting plates 15 on base 13, limiting plate 15 passes through bolted connection on base 13, one side of limiting plate 15 contacts with one side of backup pad 14, can improve local structural strength, the both ends of diving board 12 are located the top of two limiting plates 15 respectively, when the whole idle state that is in of internal diameter expander, diving board 12 can rely on gravity free fall, be stopped by the top of two limiting plates 15 when falling two limiting plates 15 department down, can not continue the whereabouts, the whereabouts distance has been restricted, thereby the jacking distance of jacking device 4 has been saved, the energy has been saved, also provide sufficient installation space for jacking device 4 simultaneously.

As an optional embodiment, a stripping mechanism is disposed between the panel 11 and the elastic plate 12, and when the elastic plate 12 moves upward under the driving of the jacking device 4 to perform the squeezing operation, there may be a situation that the pressing between the panel 11 and the elastic plate 12 is too tight and is not too easy to separate, so that the arrangement of the stripping mechanism can avoid such a situation, where the stripping mechanism specifically includes a spring, the bottom of the panel 11 is provided with a plurality of mounting holes 112, in this embodiment, the number of the mounting holes 112 is preferably four, one spring is fixedly connected in each mounting hole 112, the other end of each spring is in contact with the top surface of the elastic plate 12, the elastic plate 12 pushes the spring after being jacked upward, when the elastic plate 12 finishes squeezing, the jacking device 4 does not apply upward jacking force any more, the elastic force of the spring is then applied to the top surface of the elastic plate 12 and the elastic plate 12 moves away from the panel 11, so that the panel 11 and the springboard 12 are separated smoothly, in the drawing of this embodiment, since the structure of the spring itself is prior art and is easily purchased and obtained from the market, the specific structure is not shown.

As an optional implementation manner, the panel 11 is provided with a plurality of second step grooves 113 in a penetrating manner, the number of the second step grooves is preferably two in this embodiment, the elastic plate 12 is provided with two second through holes 124 corresponding to the second step grooves 113 in position and having the same number, the number of the second through holes is also two, a guide post 8 is disposed between each corresponding second step groove 113 and the corresponding second through hole 124, that is, the number of the guide posts 8 is also two, the middle portion of each guide post 8 is provided with a blocking portion 81, the guide post 8 plays a guiding role for the panel 11 and the elastic plate 12, so that the elastic plate 12 does not generate deviation to affect the stress when ascending and descending relative to the panel 11, and the effect of extrusion shaping is avoided being affected, the diameter of the blocking portion 81 is greater than the diameter of the second through hole 124 and the diameter of the small diameter section of the second step groove 113, the diameter of the blocking portion 81 is smaller than the diameter of the large diameter section of the second step groove 113, and the guide post 8 does not block the panel 11 and the elastic plate 12 while giving .

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an internal diameter expander which characterized in that, includes mount (1), expansion mold insert (2), expansion insert needle (3) and jacking device (4), wherein:

the number of the expansion inserts (2) is several, the upper part of each expansion insert (2) is provided with a stress surface (22) and a circular arc-shaped extrusion surface (21), a workpiece (5) is sleeved on all the expansion inserts (2), the inner wall of the workpiece (5) is close to all the extrusion surfaces (21), all the expansion inserts (2) are arranged outside the expansion insert needle (3) in a surrounding manner, and the outer wall of the expansion insert needle (3) is close to all the stress surfaces (22);

the fixing frame (1) comprises a panel (11) and an elastic plate (12), a sliding groove (111) is formed in the panel (11), the lower part of each expansion insert (2) is embedded in the sliding groove (111) and can slide in the sliding groove along the horizontal direction, the elastic plate (12) is arranged below the panel (11) and is movably connected with the panel (11), and the bottom end of each expansion insert pin (3) is fixed to the top of the elastic plate (12);

the jacking device (4) is placed below the elastic plate (12), the jacking device (4) jacks up the elastic plate (12) to enable the elastic plate (12) to move upwards and drive the expansion insert pins (3) to move upwards, and the expansion insert pins (3) can simultaneously press all the stress surfaces (22) to enable all the expansion insert pins (2) to slide in the horizontal direction along the direction far away from the expansion insert pins (3) so that all the extrusion surfaces (21) can simultaneously extrude and shape the workpiece (5).

2. The inner diameter dilator of claim 1, wherein: the expansion insert (2) comprises a first constant diameter section (23), a second constant diameter section (24) and a third constant diameter section (25) which are integrally connected, the panel (11) comprises an upper panel (114) and a lower panel (115) which are fixedly connected together, a first stepped groove (1141) is formed in the upper panel (114), the first constant diameter section (23) is located outside the upper panel (114), the second constant diameter section (24) and the third constant diameter section (25) are arranged in the first stepped groove (1141), a first through hole (1151) for the expansion insert needle (3) to penetrate is formed in the lower panel (115), and the radius of the third constant diameter section (25) is larger than that of the first through hole (1151).

3. The inner diameter dilator of claim 1, wherein: the number of the expansion inserts (2) is four, and the extrusion surface (21) of each expansion insert (2) is a quarter arc surface.

4. The inner diameter dilator of claim 1, wherein: the bottom of the expansion insert pin (3) is provided with a sliding part (31), and the elastic plate (12) is provided with a slide way (121) for the sliding part (31) to slide.

5. The inner diameter dilator of claim 1, wherein: still include height adjusting device (6), height adjusting device (6) are including adjusting screw (61) and fastening structure (62), it has seted up a plurality of first screw hole (122) to run through on diving board (12), adjusting screw (61) with first screw hole (122) threaded connection and can adjust its top with the relative height between the top surface of diving board (12), fastening structure (62) can be fixed adjusting screw (61)'s position or remove fixedly.

6. The inner diameter dilator of claim 5, wherein: the elastic plate (12) is further provided with a second threaded hole (123) perpendicular to the length direction of the first threaded hole (122) at the first threaded hole (122), the first threaded hole (122) is in cross connection with the second threaded hole (123), the fastening structure (62) comprises a fastening screw (621), and the fastening screw (621) is in threaded connection with the second threaded hole (123) and can be abutted against the adjusting screw (61).

7. The inner diameter dilator of claim 1, wherein: the fixing frame (1) further comprises a base (13) and two supporting plates (14), the bottoms of the two supporting plates (14) are connected to the top of the base (13), and the two ends of the panel (11) are respectively connected to the tops of the two supporting plates (14).

8. The inner diameter dilator of claim 7, wherein: the fixing frame (1) further comprises two limiting plates (15) connected to the base (13), and the two ends of the elastic plate (12) are located above the two limiting plates (15) respectively.

9. The inner diameter dilator of claim 1, wherein: panel (11) with be provided with demoulding mechanism between bullet board (12), demoulding mechanism includes the spring, a plurality of mounting hole (112) have been seted up to the bottom of panel (11), every all be connected with one in mounting hole (112) the spring, every the other one end of spring all with the top surface of bullet board (12) contacts.

10. The inner diameter dilator of claim 1, wherein: the panel (11) runs through and has seted up a plurality of second ladder groove (113), run through on diving board (12) and seted up with second ladder groove (113) position corresponds and the same second through-hole (124) of quantity, every corresponds second ladder groove (113) with all be provided with between second through-hole (124) a guide post (8), the middle part of guide post (8) is provided with stop part (81).