An internal support shaping mold

Abstract

The present invention discloses an internal support shaping mold, comprising an upper mold and a lower mold, wherein the upper mold is arranged directly above the lower mold; the lower mold comprises a lower fixed plate; a bracket fixedly arranged above the lower fixed plate; a first return member and an inner support plate arranged on the lower fixed plate and movably arranged in the bracket in sequence from bottom to top; a screw rod with one end fixedly arranged on the inner support plate; a first limit block arranged above the inner support plate and fixedly connected to the bracket; a plurality of transmission pins respectively passing through the first limit block; an internal support assembly movably arranged above the first limit block; a second return member arranged on the internal support assembly; the second limit block is arranged above the internal support assembly and tightly connected to the screw rod. The present invention drives the internal support assembly to perform uniform force internal support shaping operations on the processed product through the screw rod, effectively solving the problem of high product scrap rate caused by uneven force during the internal support shaping process.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, in particular to an inner support shaping mold. Background Art

[0002] The internal support shaping mold in the existing technology generally adopts a tungsten steel hard mold for expansion. This shaping method is prone to stretch marks, scratches, support marks and wiredrawing, etc., and requires secondary surface treatment. During the internal support shaping process, the product is easily deformed due to uneven force, resulting in an increased product scrap rate, thereby making the product's internal support shaping efficiency low; therefore, an internal support shaping mold is provided to solve the problem of high product scrap rate caused by uneven force during the internal support shaping process of products in the existing technology. Summary of the Invention

[0003] One of the purposes of the present invention is to provide an internal support shaping die to solve the problem of high product scrap rate caused by uneven force during the internal support shaping process of products in the prior art.

[0004] The internal support shaping mold of the present invention can be realized by the following technical solutions:

[0005] The present invention provides an internal support shaping mold comprising an upper mold and a lower mold, the upper mold being arranged directly above the lower mold; the lower mold comprising a lower fixed plate; a bracket fixedly arranged above the lower fixed plate, which is a hollow cavity; a first return member and an inner support plate arranged on the lower fixed plate from bottom to top and movably arranged in the bracket; a screw rod fixedly arranged on the inner support plate at one end, which passes through the first limit block, the internal support assembly and is fixedly connected to the second limit block in sequence; the first limit block is arranged above the inner support plate and fixedly connected to the bracket; a plurality of transmission pins respectively passing through the first limit block, whose two ends are respectively in contact and connected with the upper mold and the inner support plate; the internal support assembly is movably arranged above the first limit block, which performs internal support shaping operations on the product; a second return member arranged on the internal support assembly; the second limit block is arranged above the internal support assembly and is tightly connected to the screw rod.

[0006] In one embodiment, the inner support assembly includes a tapered inner core, a retracted chuck and a tapered pull head; the tapered inner core is fixedly arranged on the first limit block; the retracted chuck is movably arranged on the tapered inner core; the tapered pull head is movably arranged on the retracted chuck and fixedly connected to the screw rod.

[0007] In one embodiment, the retractable chuck includes a plurality of equally divided chuck blocks, and the plurality of equally divided chuck blocks are spliced ​​and clamped by the second return member.

[0008] In one embodiment, tapers are respectively provided inside both ends of the retracted chuck, and the sizes of the tapers respectively match the tapered inner core and the tapered pull head.

[0009] In one embodiment, a return groove is provided on the retracted chuck, and the second return member is provided in the return groove.

[0010] In one embodiment, a second limiting groove is provided at the upper end of the retracted chuck, and the second limiting groove cooperates with the second limiting block to limit the upper end of the retracted chuck.

[0011] In one embodiment, the tapered pull head is provided with a screw hole extending therethrough, and an internal thread is provided in the screw hole, through which the internal thread cooperates with the screw.

[0012] In one embodiment, a first limiting groove is provided in the first limiting block, and the first limiting groove cooperates with the retracting chuck to limit the lower end of the retracting chuck.

[0013] In one embodiment, the upper mold includes an upper fixed plate, a plurality of support columns, a top plate ring and a plurality of connecting parts; the plurality of support columns are evenly fixed between the upper fixed plate and the top plate ring; the plurality of connecting parts respectively fix the two ends of the corresponding support columns to the upper fixed plate and the top plate ring.

[0014] In one embodiment, both the first return member and the second return member are made of return tendons.

[0015] Compared with the prior art, the beneficial effects of the internal support shaping mold of the present invention are:

[0016] The inner support shaping die of the present invention presses down multiple transmission pins through the upper die, and the multiple transmission pins are evenly stressed, so that the inner support plate and the first return member move downward, and the inner support plate drives the screw rod downward, and the screw rod drives the tapered pull head and the second limit block fixed at the upper end of the screw rod to move vertically downward, and the tapered pull head moves downward to open the upper end of the shrinking chuck, and at the same time the shrinking chuck also slides downward, so that the lower end of the shrinking chuck is stretched outward by the taper of the tapered inner core, so that the processed product can be evenly stressed and the inner support shaping operation is achieved, which effectively solves the problem of high product scrap rate caused by uneven force during the inner support shaping process, and improves the production efficiency of the inner support shaping to a certain extent;

[0017] The internal support shaping die of the present invention effectively limits the upper and lower ends of the internal shrinking chuck by respectively cooperating with the second limiting groove and the second limiting block at the upper end of the internal shrinking chuck, and the lower end of the internal shrinking chuck and the first limiting groove. This ensures that the expanded diameter of the internal shrinking chuck is stable and the external support force is uniform, so that the diameter of the processed product can be controlled within the required range. It also ensures that the out-of-roundness tolerance of the product after shaping is controlled to the minimum.

[0018] The internal support shaping mold of the present invention has a simple operation system, is easy to process, and has a wide range of applications. At the same time, the retracted structure of the chuck can quickly and easily put in or take out the product, and no secondary treatment of the product surface is required after shaping, avoiding unnecessary wire drawing and scratching of the product surface caused by forced insertion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings Figure 5 Only certain embodiments of the present invention are shown, and therefore should not be regarded as limiting the scope. For those skilled in the art, other relevant drawings can be obtained based on these drawings without inventive efforts.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an internal support shaping mold of the present invention, comprising an upper mold and a lower mold;

[0021] Figure 2 yes Figure 1 The cross-sectional structure diagram of an internal support shaping mold of the present invention is shown;

[0022] Figure 3 yes Figure 1 The figure shows a schematic diagram of the separation structure of the upper mold and the lower mold in an internal support shaping mold of the present invention;

[0023] Figure 4 yes Figure 3 The figure shows the explosion structure of the upper die in an internal support shaping die of the present invention;

[0024] Figure 5 yes Figure 3 The exploded structure diagram of the lower die in an internal support shaping die of the present invention is shown, which includes a first limit block and an internal support assembly;

[0025] Figure 6 yes Figure 5 The schematic cross-sectional structure diagram of the assembly of the first limit block and the inner support assembly shown includes an inward-retracting chuck;

[0026] Figure 7 yes Figure 6 The structural diagram of the retracted chuck is shown;

[0027] Figure 8 yes Figure 6 The structural diagram of the first limit block is shown.

[0028] Markings in the figure: 10, upper mold; 11, upper fixed plate; 12, support column; 13, top plate ring; 14, connecting part; 20, lower mold; 21, lower fixed plate; 22, bracket; 221, fastening hole; 222, fastening screw; 23, first return part; 24, inner support plate; 25, screw rod; 26, first limit block; 261, first limit groove; 262, transmission pin hole; 27, transmission pin; 28, inner support assembly; 281, tapered inner core; 282, retracted chuck; 2821, return groove; 2822, second limit groove; 283, tapered pull head; 2831, screw rod hole; 29, second return part; 30, second limit block. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in various different configurations.

[0030] 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 invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0031] See also Figure 1 The present invention provides an internal support shaping mold mainly comprising an upper mold 10 and a lower mold 20, wherein the upper mold 10 is arranged directly above the lower mold 20; the upper mold 10 is fixedly connected to the upper slider of the hydraulic press and moves along with the movement of the upper slider; the lower mold 20 is fixedly arranged directly below the upper slider of the hydraulic press.

[0032] See also Figures 1-4The upper die 10 includes an upper fixed plate 11, a plurality of support columns 12, a top plate ring 13, and a plurality of connecting members 14. The upper fixed plate 11 can be fixedly connected to the upper die of the hydraulic press. The plurality of support columns 12 are evenly and fixedly arranged between the upper fixed plate 11 and the top plate ring 13. The plurality of connecting members 14 respectively fix the ends of the corresponding support columns 12 to the upper fixed plate 11 and the top plate ring 13. In this embodiment, three support columns 12 are evenly and equidistantly arranged, and the connecting members 14 are fixed screws. In other embodiments, the number of support columns 12 can also be two, four, or any other plurality, and the number is set according to actual needs.

[0033] See also Figure 2 and Figure 5 The lower mold 20 includes a lower fixed plate 21, a bracket 22, a first return member 23, an inner supporting plate 24, a screw rod 25, a first limit block 26, a plurality of transmission pins 27, an inner support assembly 28, a second return member 29 and a second limit block 30; the bracket 22 is a hollow cavity, which is fixedly arranged on the lower fixed plate 21, specifically, the bracket 22 is fixed to the lower fixed plate 21 by fixing screws; the first return member 23 and the inner supporting plate 24 are movably arranged on the lower fixed plate 21 from bottom to top and are arranged in the bracket 22, and the function of the first return member 23 is to provide an upward restoring force to the inner supporting plate 24; one end of the screw rod 25 is fixedly arranged on the inner supporting plate 24, which passes through the first limit block 26, the inner supporting assembly 28 and the second limit block 30 and is fixedly connected, which drives the inner supporting assembly 28 to perform an inner support shaping operation on the product; the first limit block 26 It is arranged above the inner support plate 24 and fixedly connected to the bracket 22, and the bracket 22 supports the first limit block 26, and the first limit block 26 limits the lower end of the inner support assembly 28; multiple transmission pins 27 respectively pass through the first limit block 26, and their two ends are respectively in contact and connected with the upper mold 10 and the inner support plate 24, and the function of multiple transmission pins 27 is to transmit the downward pressure of the upper mold 10 to the inner support plate 24; the inner support assembly 28 is movably arranged above the first limit block 26, which performs an internal support shaping operation on the product; the second return member 29 is arranged on the inner support assembly 28, which holds the inner support assembly 28 tightly and can provide a restoring force for the inner support assembly 28 to return to its initial position; the second limit block 30 is arranged above the inner support assembly 28 and is fastened to the screw rod 25, which limits the upper end of the inner support assembly 28.

[0034] See also Figure 5In this embodiment, the bracket 22 is a hollow ring, and the first return member 23, the inner support plate 24, and the first limit block are arranged in the bracket 22 from bottom to top in sequence; a plurality of fastening holes 221 are provided on the bracket 22, and a plurality of fastening screws 222 are fastened to the first limit block 26 through the corresponding fastening holes 221, thereby achieving the support function of the first limit block 26; the first return member 23 is made of return tendon; the three transmission pins 27 are evenly and equidistantly arranged between the top plate ring 13 and the inner support plate 24 and respectively pass through the first limit block 26; in other embodiments, the number of the transmission pins 27 can also be two, four, or other plurality, and the number is set according to actual needs. In this embodiment, the second return member 29 is also made of return tendon.

[0035] See also Figure 5-Figure 8In this embodiment, the inner support assembly 28 includes a tapered inner core 281, an inward-retracting chuck 282 and a tapered pulling head 283; the tapered inner core 281 is fixedly arranged on the first limit block 26; the inward-retracting chuck 282 is movably arranged on the tapered inner core 281; the tapered pulling head 283 is movably arranged on the inward-retracting chuck 282 and is fixedly connected to the screw rod 25; the inward-retracting chuck 282 expands the upper and lower ends of the product under the action of the tapered pulling head 283 and the tapered inner core 281, thereby realizing internal support shaping through uniform force. In this embodiment, the retracting chuck 282 has a certain hardness and toughness, and includes a plurality of equally divided chuck blocks, and the plurality of equally divided chuck blocks are spliced ​​and clamped by the second return member 29, so that the retracting chuck 282 can be freely moved to shrink inward and open outward. In this embodiment, the equally divided chuck blocks are divided into six equal parts. In other embodiments, the equally divided chuck blocks can also be divided into two equal parts, three equal parts or other majority equal parts, and the specific number of equal parts is set according to actual needs; the two ends of the retracting chuck 282 are respectively provided with tapers, and the sizes of the tapers are matched with the tapered inner core 281 and the tapered pull head 283, so that the retracting The chuck 282 can smoothly translate inward and outward; a return groove 2821 is provided on the retracting chuck 282, and the second return member 29 is provided in the return groove 2821 to realize the splicing and clamping of multiple equally divided chuck blocks of the retracting chuck 282; a second limiting groove 2822 is provided at the upper end of the retracting chuck 282, and the limiting operation of the second limiting block 30 is realized through the second limiting groove 2822; the tapered pull head 283 is provided with a screw hole 2831, and the screw hole 2831 is provided with an internal thread, and the fixed connection between the tapered pull head 283 and the screw 25 is realized through the cooperation of the internal thread and the screw 25. In this embodiment, a first limiting groove 261 is provided in the first limiting block 26, and the downward distance of the retracted clamp 282 is limited by the first limiting groove 261; a plurality of transmission pin holes 262 are provided through the first limiting block 26, and a plurality of transmission pins 27 are respectively contacted and connected with the inner support plate 24 through the corresponding transmission pin holes 262, thereby realizing the transmission effect on the inner support plate 24.

[0036] It should be noted that the working process of the internal support shaping mold of the present invention is as follows: the shaping mold is installed on a hydraulic press platform that can operate normally, the positions where the upper mold 10 and the lower mold 20 should be fixed are fixed respectively, and the upper and lower stroke limits of the hydraulic press are adjusted; the product workpiece that needs internal support shaping is gently placed on the lower mold 20; the power button switch of the hydraulic press is turned on, and after the equipment operates normally, any part of the human body is out of the safe distance between the equipment and the mold, and the downward working button of the hydraulic press is turned on, and the upper slide block of the hydraulic press moves downward, and the upper mold 10 moves downward with the upper slide block; when the When the top plate ring 13 presses the multiple transmission pins 27, the multiple transmission pins 27 are uniformly stressed, and the force transmitted downward pushes the inner support plate 24 downward. The first return member 23 arranged below the inner support plate 24 is compressed downward, and the inner support plate 24 also follows the first return member 23 downward. The screw rod 25 fixedly connected to the inner support plate 24 moves downward, and the screw rod 25 drives the tapered pull head 283 and the second limit block 30 fixed at the upper end of the screw rod 25 to move vertically downward. The tapered pull head 283 moves downward to support the upper end of the retracted chuck 282 At the same time, the retracted chuck 282 will also slide downward, so that the lower end of the retracted chuck 282 is pushed outward by the taper of the tapered inner core 281. When the second limiting groove 2822 at the upper end of the retracted chuck 282 contacts the second limiting block 30 and the lower end of the retracted chuck contacts the first limiting groove 261, the upper and lower ends of the retracted chuck 282 stop extending outward, and the downward limit of the hydraulic press works, and the hydraulic press stops descending; the upward program of the hydraulic press starts working, so that the upper slide of the hydraulic press moves upward, and the upper die 10 follows the upper slide upward, and at the same time At the same time, the first return member 23 arranged below the inner support plate 24 is not subject to the downward pressure of the upper mold 10, and the tendon returns elastically. The tendon supports the inner support plate 24 and moves upward, and the inner support plate 24 drives the screw rod 25 to move upward. At the same time, the tapered pull head 283 fixed at the upper end of the screw rod 25 also moves upward. The retracted chuck 282 is not subject to the internal support force of the tapered pull head 283. The retracted chuck 283 is retracted and slides upward by the elastic holding force of the tendon of the second return member 29, and the retracted clamp block 282 moves inward and retracts to complete the entire internal support shaping process.

[0037] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An internal support shaping mold, characterized in that: The upper mold comprises an upper mold and a lower mold, wherein the upper mold is arranged directly above the lower mold; the lower mold comprises a lower fixing plate; and a bracket fixedly arranged above the lower fixing plate, which is a hollow cavity; A first return member and an inner support plate are arranged on the lower fixed plate and movably arranged in the bracket from bottom to top; a screw rod with one end fixed on the inner support plate, which passes through the first limit block, the inner support assembly and is fixedly connected to the second limit block in sequence; the first limit block is arranged above the inner support plate and is fixedly connected to the bracket; a plurality of transmission pins respectively pass through the first limit block, and their two ends are respectively in contact and connected with the upper mold and the inner support plate; the inner support assembly is movably arranged above the first limit block, which performs inner support shaping operations on the product; a second return member is arranged on the inner support assembly; the second limit block is arranged above the inner support assembly and is tightly connected to the screw rod.

2. The inner support shaping mold according to claim 1, characterized in that: The inner support assembly includes a tapered inner core, a retracted chuck and a tapered pull head; the tapered inner core is fixedly arranged on the first limit block; the retracted chuck is movably arranged on the tapered inner core; the tapered pull head is movably arranged on the retracted chuck and fixedly connected to the screw rod.

3. The inner support shaping mold according to claim 2, characterized in that: The retractable chuck includes a plurality of equally divided chuck blocks, and the plurality of equally divided chuck blocks are spliced ​​and clamped by the second return member.

4. The inner support shaping mold according to claim 3, characterized in that: Tapers are respectively provided inside the two ends of the retracted chuck, and the sizes of the tapers are matched with the tapered inner core and the tapered pull head respectively.

5. The inner support shaping mold according to claim 4, characterized in that: The retracted chuck is provided with a return groove, and the second return member is provided in the return groove.

6. The inner support shaping mold according to claim 4, characterized in that: The upper end of the retractable chuck is provided with a second limiting groove, and the second limiting groove cooperates with the second limiting block to limit the upper end of the retractable chuck.

7. The inner support shaping mold according to claim 2, characterized in that: The tapered pull head is provided with a screw rod hole through which an internal thread is provided, and the internal thread cooperates with the screw rod.

8. The inner support shaping mold according to claim 2, characterized in that: A first limiting groove is provided in the first limiting block, and the first limiting groove cooperates with the inward-retracting chuck to limit the lower end of the inward-retracting chuck.

9. An internal support shaping mold according to any one of claims 1 to 8, characterized in that: The upper mold includes an upper fixed plate, multiple support columns, a top plate ring and multiple connecting parts; the multiple support columns are evenly fixed between the upper fixed plate and the top plate ring; the multiple connecting parts fix the two ends of the corresponding support columns on the upper fixed plate and the top plate ring respectively.

10. An internal support shaping die according to any one of claims 1 to 8, characterized in that: The first return member and the second return member are both made of return tendons.

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