Intermittent thread internal shrinkage core-pulling mold structure

Abstract

The utility model provides a discontinuous thread internal shrinkage core-pulling mold structure which comprises a panel, a fixed mold plate, a movable mold plate, a gear fixing plate, a thread core fixing plate, an ejector plate and a bottom plate, a fixed mold core is embedded in the bottom of the fixed mold plate, a movable mold core is embedded in the movable mold plate, an internal shrinkage block is arranged at the bottom of the panel, the fixed mold core is provided with a plurality of internal shrinkage sliding blocks, and thread tooth grooves are formed in the side walls of the internal shrinkage sliding blocks; the tooth core fixing plate is provided with a movable mold tooth core, the movable mold tooth core is sleeved with a movable mold tooth sleeve, the upper end of the movable mold tooth core and the upper end of the movable mold tooth sleeve form a forming groove, the upper side wall of the movable mold tooth sleeve is provided with forming threads, and the gear fixing plate is provided with a gear driving mechanism connected with the movable mold tooth sleeve. During mold closing, the internal shrinkage sliding blocks are used for forming internal threads of a middle concave part of a cover body, forming threads on the movable mold tooth sleeve are used for forming internal threads of the cover body, during mold opening, the internal shrinkage sliding blocks are driven by the internal shrinkage blocks to get close, the thread grooves retreat from the internal threads of a product, the movable mold tooth sleeve retreats from the forming threads, the structure of upper and lower thread twisting core pulling is avoided, and the overall size of the mold is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mould, specifically, relates to intermittent screw thread retraction core mould structure. BACKGROUND

[0002] Mould is the tool for making shaped product, and different shaped products are made through different shapes of mould, such as Figures 1-2 The cover body shown in the drawing is provided with internal threads on the inner side wall, and a concave portion is formed in the middle, a hole is opened in the middle of the concave portion, and internal screw threads are arranged on the inner side wall of the concave portion in the circumferential direction, that is, the internal threads are formed at one time, and the internal screw threads of the inner side wall of the concave portion are also formed at one time, if the traditional front and rear moulds are designed with thread structure, the complex mould design not only increases the overall thickness of the mould, but also leads to the increase of the required equipment tonnage, thereby significantly increasing the production cost. SUMMARY

[0003] The utility model provides a kind of intermittent screw thread retraction core mould structure, to solve the technical problem mentioned in the above technical background.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of intermittent screw thread retraction core mould structure, including faceplate from top to bottom, fixed template, movable template, gear fixed plate, core fixed plate, thimble plate and bottom plate, the fixed template bottom is embedded fixed die, the movable template is embedded movable die, the faceplate bottom is provided with retraction block, the fixed die is provided with several retraction sliders, the retraction slider is arranged around the retraction block, the retraction slider is slidably connected with the retraction block, the side wall of the retraction slider is provided with screw thread groove;The core fixed plate is provided with movable die core, the movable die core is sleeved movable die sleeve, the movable die core and the movable die sleeve can slidably pass through the movable template, the upper end of the movable die core and the movable die sleeve constitutes forming groove, the upper side wall of the movable die sleeve is opened with forming thread, the gear fixed plate is provided with gear driving mechanism, and the gear driving mechanism is connected with the movable die sleeve.

[0005] Further, the retraction block is inverted cone, the side of the retraction block is opened with inclined T-shaped groove, and the retraction slider is provided with inclined T-shaped convex strip close to the side of the retraction block.

[0006] Further, the fixed die is provided with fixed ring, the inner side wall of the fixed ring is opened with guide groove, and the retraction slider slides along the guide groove.

[0007] Further, the gear driving mechanism comprises a first gear, a second gear, a rack and a cylinder, the first gear is sleeved on the movable die tooth sleeve, the second gear is rotatably arranged on the gear fixing plate, the cylinder is connected with the rack, the rack is engaged with the second gear, and the second gear is engaged with the first gear.

[0008] Further, the side surface of the movable die plate and the core fixing plate is further provided with a connecting piece.

[0009] Compared with the prior art, the utility model has the advantages of:

[0010] The utility model discloses a panel, fixed die plate, movable die plate, gear fixing plate, core fixing plate, thimble plate and bottom plate, and the bottom of fixed die plate is embedded fixed die core, and the movable die plate is embedded movable die core, and the bottom of panel is provided with the retraction block, and the fixed die core is provided with a plurality of retraction sliding blocks, and the retraction sliding block is arranged around the retraction block, and the retraction sliding block is connected with the retraction block slidingly, and the lateral wall of retraction sliding block is provided with screw groove, and the core fixing plate is provided with movable die core, and the movable die core is sleeved movable die tooth sleeve, and the upper end of movable die core and movable die tooth sleeve constitutes forming groove, and the upper lateral wall of movable die tooth sleeve is opened and has forming thread, and the gear fixing plate is provided with gear driving mechanism, and the gear driving mechanism is connected with movable die tooth sleeve. When the mold is closed, the retraction sliding block is arranged in the forming groove, is used for the internal thread of the screw thread in the middle recessed part of the forming cover body, and the forming thread on the movable die tooth sleeve is used for the internal thread of the forming cover body, when the mold is opened, the screw groove of the retraction sliding block is driven by the retraction block and is withdrawn from the internal thread of the product, and then the gear drives the movable die tooth sleeve to rotate and is withdrawn from the forming thread, that is, the forming and demolding of the cover body are realized, the structure of the upper and lower core-pulling teeth is avoided, the overall size of the mold is reduced, and the production cost is reduced. ACCURACY OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0012] Figure 1 It is the structure schematic diagram of cover body structure;

[0013] Figure 2 It is another angle structure schematic diagram of cover body;

[0014] Figure 3 It is the structure schematic diagram of the forming mold of the utility model cover body;

[0015] Figure 4 It is the structure schematic diagram of the panel and movable die plate of the forming mold of the utility model cover body;

[0016] Figure 5 is the structure schematic view of the inner shrink block and the inner shrink slider of the forming die of the cover body of the utility model;

[0017] Figure 6 is another angle structure schematic view of the inner shrink block and the inner shrink slider of the forming die of the cover body of the utility model;

[0018] Figure 7 is the structure schematic view of the inner shrink block, the inner shrink slider and the movable die tooth cover of the forming die of the cover body of the utility model;

[0019] Figure 8 is the structure schematic view of the gear driving mechanism of the forming die of the cover body of the utility model.

[0020] Main component symbol explanation

[0021] 10, panel; 101, inner shrink block;

[0022] 20, fixed die plate; 201, fixed die core; 202, inner shrink slider; 2021, screw thread groove; 203, fixed ring;

[0023] 30, movable die plate; 301, movable die core;

[0024] 40, gear fixing plate; 401, first gear; 402, second gear; 403, rack; 404, oil cylinder;

[0025] 50, tooth core fixing plate; 501, movable die tooth core; 502, movable die tooth cover; 5021, forming screw thread;

[0026] 60, ejector pin plate;

[0027] 70, bottom plate;

[0028] 80, cover body; 801, internal screw thread; 802, internal screw thread. Specific implementation

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0030] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connection", "connecting", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] Embodiments

[0033] Reference Figures 3-7The utility model discloses a cover body forming die, including from top to bottom panel 10, fixed die plate 20, movable die plate 30, gear fixed plate 40, tooth core fixed plate 50, thimble plate 60 and bottom plate 70, the bottom of fixed die plate 20 is embedded fixed die core 201, movable die plate 30 is embedded and sets up movable die core 301, and the bottom of panel 10 is provided with inner contraction block 101, and fixed die core 301 is provided with a plurality of inner contraction sliding blocks 202, and the inner contraction sliding block 202 is arranged around inner contraction block 101, and the inner contraction sliding block 202 is connected with the sliding of inner contraction block 101, and the lateral wall of inner contraction sliding block 202 is provided with screw groove 2021, specifically, inner contraction block 101 is inverted cone, and the side of inner contraction block 101 is provided with inclined T-shaped groove, and the side of inner contraction sliding block 202 is provided with inclined T-shaped convex strip, when clamping, inner contraction block 101 is inserted into the middle of inner contraction sliding block 202, and inner contraction sliding block 202 is opened, and the inner screw thread 801 of the inner side wall of the concave part of the forming cover body 80 is used, when opening, panel 10 drives inner contraction block 101 to move upwards while driving inner contraction sliding block 202 to exit from the inner screw thread 801 of the inner side wall of the concave part of the cover body 80 through the cooperation of T-shaped groove and T-shaped convex strip, that is, the forming and demolding of the inner screw thread 801 of the inner side wall of the concave part of the cover body 80 are completed.

[0034] Further, fixed die core 201 is provided with fixed ring 203, the inner side wall of fixed ring 203 is provided with guide groove, inner contraction sliding block 202 slides along guide groove, and inner contraction sliding block 202 is circumferentially arranged in the inner side of fixed ring 203, and inner contraction sliding block 202 can be gathered or scattered in fixed ring 203, and fixed ring 203 plays the role of guiding and limiting.

[0035] Referring to Figures 3-7 The tooth core fixed plate 50 is provided with movable die tooth core 501, the movable die tooth core 501 is sleeved with movable die sleeve 502, the movable die tooth core 501 and the movable die sleeve 502 can slide through the movable die plate 30, the upper end of the movable die tooth core 501 and the movable die sleeve 502 constitutes a forming groove, the upper side wall of the movable die sleeve 502 is provided with forming thread 5021, the gear fixed plate 40 is provided with gear driving mechanism, and the gear driving mechanism is connected with the movable die sleeve 502. Specifically, when clamping, inner contraction sliding block 202 is placed in the forming groove, and the forming thread 5021 of the upper side wall of the movable die sleeve 502 is used for forming the inner thread 802 of the inner side wall of the cover body 80, when opening, the forming thread 5021 is made to exit from the inner thread 802 of the inner side wall of the cover body 80 by rotating the movable die sleeve 502, that is, the forming and demolding of the inner thread 802 of the cover body 80 are completed.

[0036] Referring to Figure 8As shown, the gear driving mechanism comprises a first gear 401, a second gear 402, a rack 403 and a cylinder 404, the first gear 401 is sleeved on the movable mold tooth sleeve 502, the second gear 402 is rotatably arranged on the gear fixing plate 40, the cylinder 404 is connected with the rack 403, the rack 403 is engaged with the second gear 402, the second gear 402 is engaged with the first gear 401, through the movement of the rack 403 driven by the cylinder 404, the second gear 402 is rotated by the rack 403, the first gear 401 is rotated by the second gear 402, the rotation of the movable mold tooth sleeve 502 is realized, and the tooth stripping demolding is carried out.

[0037] In addition, the side surface of the movable mold plate 30 and the tooth core fixing plate 50 is further provided with a connecting piece, the connecting piece is fixed at both ends on the side surface of the movable mold plate 30 and the tooth core fixing plate 50 through bolts, and the connecting piece plays a role of fixing and connecting, so that the gear fixing plate 40 and the tooth core fixing plate 50 are prevented from being separated during tooth stripping.

[0038] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An interrupted thread undercure core mold structure, characterized by: The application relates to a top-down panel, a fixed mold plate, a movable mold plate, a gear fixing plate, a core fixing plate, a needle plate and a bottom plate, wherein the bottom of the fixed mold plate is embedded with a fixed mold core, the movable mold plate is embedded with a movable mold core, the bottom of the panel is provided with a retraction block, the fixed mold core is provided with a plurality of retraction sliders, the retraction sliders are arranged around the retraction block, the retraction sliders are in sliding connection with the retraction block, the side wall of the retraction slider is provided with a screw groove; the core fixing plate is provided with a movable mold core, the movable mold core is sleeved with a movable mold sleeve, the movable mold core and the movable mold sleeve can slide through the movable mold plate, the upper end of the movable mold core and the movable mold sleeve forms a forming groove, the upper side wall of the movable mold sleeve is provided with a forming thread, the gear fixing plate is provided with a gear driving mechanism, and the gear driving mechanism is connected with the movable mold sleeve.

2. The intermittent thread internal undercut mold structure of claim 1, wherein: The retraction block is in the shape of an inverted cone, the side of the retraction block is provided with an inclined T-shaped groove, and the retraction slider is provided with an inclined T-shaped convex strip close to the side of the retraction block.

3. The intermittent thread undercut core mold structure of claim 1, wherein: The fixed mold core is provided with a fixing ring, the inner side wall of the fixing ring is provided with a guide groove, and the retraction slider slides along the guide groove.

4. The intermittent thread undercut core mold structure of claim 1, wherein: The gear driving mechanism comprises a first gear, a second gear, a rack and an oil cylinder, the first gear is sleeved on the movable mold sleeve, the second gear is rotatably arranged on the gear fixing plate, the oil cylinder is connected with the rack, the rack is in mesh with the second gear, and the second gear is in mesh with the first gear.

5. The intermittent thread undercut core mold structure of claim 1, wherein: The side of the movable mold plate and the core fixing plate is further provided with a connecting piece.

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