A forming die for a threaded socket

By designing the first core-pulling assembly, the second core-pulling assembly, the inclined ejector assembly, and the straight ejector assembly, and combining the gear set of the transmission assembly with the rotary drive device, the demolding problem of the connecting hole and the inclined hole was solved, and the precise molding and efficient production of complex internal structures were achieved.

CN118906383BActive Publication Date: 2025-11-28NINGBO ZHONGHE AUTO PARTS CO LTD
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Patent Information

Application Number
CN202411115842.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-14
Publication Date
2025-11-28
Estimated Expiration
2044-08-14

AI Technical Summary

Technical Problem

In existing technologies, ordinary core-pulling mechanisms and gear mechanisms cannot simultaneously complete the demolding of connecting holes and oblique holes, leading to injection molding difficulties for complex internal structures.

Method used

The design employs a combination of a first core-pulling assembly, a second core-pulling assembly, an inclined ejector assembly, and a straight ejector assembly. Combined with the gear set and rotary drive device in the transmission assembly, it realizes the rotation and translation of the bushing. With the lateral translation of the inclined guide post, it completes the precise core-pulling and straight ejection of the threaded hole and the inclined hole.

Benefits of technology

It enables precise molding of complex internal structures, improves production efficiency and product quality, and ensures smooth demolding of threaded holes and angled holes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a forming die for a connecting seat with threads, which comprises an upper die assembly and a lower die assembly; an upper die forming plate in the upper die assembly is combined with a lower die forming plate in the lower die assembly in an upper-lower mode, and a die cavity is formed between the two; the forming die is characterized in that: it further comprises a first core-pulling assembly, a second core-pulling assembly, a transmission assembly, an inclined ejector assembly and a straight ejector assembly; the first core-pulling assembly comprises a forming rod, a shaft sleeve, a first side sliding block, a translation seat and a translation driving device; the second core-pulling assembly comprises a second side sliding block; the inclined ejector assembly comprises a straight ejector block and an inclined ejector rod; and the straight ejector assembly comprises a straight ejector rod and a top plate which can move up and down. The forming die has simple structure, smooth demolding and can be applied to the machining and manufacturing of connecting seats.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of injection mold, in particular to a forming mold of a connecting seat with screw thread. BACKGROUND

[0002] In the field of injection mold, the hole on the product is generally formed by using core-pulling mechanism for demolding, and the product with screw thread on the inner wall of the hole is generally formed by using gear mechanism and core-pulling mechanism linkage for demolding.

[0003] Figure 1 As shown in the connecting seat structure in automobile accessories, the connecting seat 111 is a plastic part, which is manufactured and processed by an injection mold. The connecting seat 111 has a connecting hole 112, and the inner wall of the connecting hole 112 has a screw thread 113. In theory, the connecting hole 112 can be formed by combining the core-pulling mechanism and the gear mechanism. However, as can be seen from Figure 2 the connecting seat 111 also has an inclined hole 114, which is in communication with the connecting hole 112. If the inclined hole 114 is also formed by using the core-pulling mechanism for demolding, the core-pulling direction of the inclined hole 114 must be different from that of the connecting hole 112. The ordinary core-pulling mechanism and gear mechanism cannot complete the demolding and forming of the connecting hole 112 and the inclined hole 114. SUMMARY

[0004] The present application aims to provide a forming mold of a connecting seat with screw thread to solve the problems in the background art.

[0005] To achieve the above object, the technical scheme adopted by the present application is: a forming die of a connecting seat with threads, comprising an upper die assembly and a lower die assembly, an upper die forming plate in the upper die assembly and a lower die forming plate in the lower die assembly are combined in an upper-lower mode and form a die cavity therebetween, further comprising a first core-pulling assembly, a second core-pulling assembly, a transmission assembly, an inclined ejector assembly and a straight ejector assembly; the first core-pulling assembly comprises a forming rod, a shaft sleeve, a first side slider, a translation seat and a translation driving device, the translation seat is movably arranged between the upper die assembly and the lower die assembly, one end of the forming rod is inserted into the die cavity, the other end of the forming rod is fixedly connected with the translation seat, the shaft sleeve is movably sleeved with the forming rod, one end of the shaft sleeve is provided with external threads, the end of the shaft sleeve with the external threads is inserted into the die cavity, the shaft sleeve is movably connected with the translation seat, the shaft sleeve is connected with the first side slider and the two are linked, the first side slider is connected with a first inclined guide column, the first inclined guide column is connected with the upper die assembly, the translation driving device is connected with the translation seat; the transmission assembly comprises a gear set and a rotation driving device, the shaft sleeve is transmissionally connected with the rotation driving device through the gear set; the second core-pulling assembly comprises a second side slider, the second side slider is movably arranged between the upper die assembly and the lower die assembly, one end of the second side slider is inserted into the die cavity, the second side slider is arranged in opposition to the forming rod, the second side slider is connected with a second inclined guide column, the second inclined guide column is connected with the upper die assembly; the inclined ejector assembly comprises a straight ejector block and an inclined ejector rod, the straight ejector block is fixedly connected in the lower die assembly, the upper end of the inclined ejector rod is inserted into the die cavity, the lower end of the inclined ejector rod is movably connected with the straight ejector block, an alpha angle is formed between the straight ejector block and the inclined ejector rod, 0°< alpha < 90°; the straight ejector assembly comprises a straight ejector rod and a top plate which can move up and down, the straight ejector rod is movably erected in the lower die assembly, the upper end of the straight ejector rod is inserted into the die cavity, the lower end of the straight ejector rod is fixedly connected in the top plate, the straight ejector rod is arranged in parallel with the straight ejector block.

[0006] Compared with the prior art, the present application has the advantages that: through the design of the first core-pulling assembly, the second core-pulling assembly, the inclined ejector assembly and the straight ejector assembly, and the cooperation of the first core-pulling assembly and the transmission assembly, the demolding difficulty of the plastic connecting seat with threaded connecting holes and connected inclined holes in the injection molding process is effectively solved, the accurate molding of the complex internal structure is realized, and the production efficiency and product quality are improved. The gear set in the transmission assembly is combined with the rotation driving device, so that the shaft sleeve can rotate and rotate, which can realize the rotary demolding of the molded product, and at the same time, the first core-pulling assembly is linked to realize the accurate core-pulling action of the threaded hole. The second core-pulling assembly is added according to the product demand, in order to form a groove on the opposite side of the connecting hole of the connecting seat, and the straight ejector assembly is added for the straight ejector demolding of the connecting seat. In the straight ejector demolding process, the inclined hole on the connecting seat is smoothly demolded in cooperation with the inclined ejector assembly.

[0007] The connection seat is formed and demoulded:

[0008] The core-pulling is carried out under the action of the injection molding machine, the upper mold assembly is driven to move away from the lower mold assembly, thereby the mold is opened; during the movement of the upper mold assembly, the first inclined guide pin and the second inclined guide pin connected with the upper mold assembly move with the upper mold assembly, and the first inclined guide pin and the second inclined guide pin drive the first side slider and the second side slider to move laterally, that is, the first side slider and the second side slider move away from the connection seat, and the movement of the first side slider drives the sleeve to move laterally away from the connection seat, and at the same time of the movement of the sleeve, the rotary driving device drives the sleeve to rotate through the gear set, thereby the sleeve moves laterally and rotates at the same time, and the thread is formed in the connecting hole of the connection seat.

[0009] The secondary core-pulling is carried out after the mold is opened, the translation driving device drives the translation seat to move laterally away from the connection seat, and the movement of the translation seat drives the forming rod to move away from the connection seat, so that the forming rod is separated from the connection seat. During the movement of the forming rod, when the forming rod abuts against the sleeve after the movement, the forming rod drives the sleeve to further separate from the connection seat under the driving of the translation seat, until the forming rod and the sleeve are completely demoulded from the connection seat, and the secondary core-pulling is completed.

[0010] The straight ejection assembly and the inclined ejection assembly cooperate to demould: under the action of the injection molding machine, the injection molding machine drives the top plate to move upward, and the top rod drives the straight ejection rod to move upward and out of the connection seat.

[0011] In some embodiments of the present application, the upper mold assembly is connected with a locking pin, and the locking pin is inserted into the sleeve.

[0012] In some embodiments of the present application, the gear set comprises a first gear, a second gear, a third gear and a fourth gear, the first gear is located in the lower mold assembly, the first gear is connected with the rotary driving device, the second gear is located above the first gear and is in meshing connection with the first gear, the third gear is located above the second gear and is in meshing connection with the second gear, and the fourth gear is in meshing connection with the sleeve and the third gear respectively; the third gear is arranged in the translation seat, and the third gear can slide relative to the second gear.

[0013] In some embodiments of the present application, the translation seat comprises a first fixed block, a second fixed block and a third fixed block, the first fixed block, the second fixed block and the third fixed block are sequentially and integrally connected from inside to outside of the mold, and the first fixed block and the second fixed block have a space for accommodating the third gear, and the first side slider is movably arranged on the third fixed block.

[0014] In some embodiments of the present application, the fourth gear is movably connected with the shaft sleeve.

[0015] In some embodiments of the present application, bearings are connected with the second gear and the third gear.

[0016] In some embodiments of the present application, the first side slider is connected with the shaft sleeve through a connecting rod.

[0017] In some embodiments of the present application, the first fixed block is provided with a shaft hole penetrating through both ends thereof, the shaft sleeve is matched with the shaft hole, and a movable space is reserved between an end of the shaft sleeve away from the mold cavity and the second fixed block; the forming rod penetrates through the shaft hole, and an end of the forming rod away from the mold cavity is connected with the second fixed block.

[0018] In some embodiments of the present application, a first sheath is arranged between the first fixed block and the shaft sleeve, and the first sheath is sleeved with the shaft sleeve.

[0019] In some embodiments of the present application, a second sheath is arranged between the shaft sleeve and the forming rod, and the second sheath is sleeved with the forming rod; a channel is arranged in the forming rod along the axial direction thereof. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure diagram of connecting seat Figure 1 ;

[0021] Figure 2 Structure diagram of connecting seat Figure 2 ;

[0022] Figure 3 Exploded view of the present application

[0023] Figure 4 Layout diagram of the first core-pulling assembly

[0024] Figure 5 Layout diagram of the transmission assembly Figure 1 ;

[0025] Figure 6 Layout diagram of the transmission assembly Figure 2 ;

[0026] Figure 7 Layout diagram of the inclined ejector assembly

[0027] Figure 8 Layout diagram of the straight ejector assembly

[0028] Figure 9 Exploded view of the first core-pulling assembly

[0029] Figure 10Structure schematic diagram after the mold is opened and the core is drawn out;

[0030] Figure 11 Structure schematic diagram after the core is drawn out twice;

[0031] Figure 12 Structure schematic diagram after the connecting seat is completely ejected.

[0032] In the figure: 1, upper mold assembly; 2, lower mold assembly; 3, mold cavity; 4, first core-drawing assembly; 5, second core-drawing assembly; 6, transmission assembly; 7, inclined ejector assembly; 8, straight ejector assembly; 401, forming rod; 402, shaft sleeve; 403, first side slider; 404, translation seat; 405, translation driving device; 406, first inclined guide column; 601, primary gear; 602, secondary gear; 603, tertiary gear; 604, quaternary gear; 605, rotary driving device; 501, second side slider; 502, second inclined guide column; 701, inclined ejector rod; 702, straight ejector block; 801, straight ejector rod; 802, top plate; 10, locking pin; 4041, first fixed block; 4042, second fixed block; 4043, third fixed block; 11, bearing; 12, connecting rod; 13, movable space; 14, first sheath; 15, second sheath; 111, connecting seat. DETAILED DESCRIPTION

[0033] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that, under the premise of no conflict, the following described embodiments or technical features can be combined in any manner to form new embodiments.

[0034] In the description of the present application, it should be noted that, for orientation words, such as terms “center”, “transverse”, “longitudinal”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0035] It should be noted that the terms “first”, “second” and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0036] The terms "comprise" and "comprising", and any variations thereof, as used in the specification and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of steps or elements does not necessarily comprise only those steps or elements, but can include additional steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] As shown in Figures 3-12 A forming die of a threaded connecting seat, comprising an upper die assembly 1 and a lower die assembly 2, an upper die forming plate in the upper die assembly 1 and a lower die forming plate in the lower die assembly 2 are vertically closed and a die cavity 3 is formed between the two, further comprising a first core-pulling assembly 4, a second core-pulling assembly 5, a transmission assembly 6, an inclined ejector assembly 7 and a straight ejector assembly 8; the first core-pulling assembly 4 comprises a forming rod 401, a shaft sleeve 402, a first side slider 403, a translation seat 404 and a translation driving device 405, the translation seat 404 is movably arranged between the upper die assembly 1 and the lower die assembly 2, one end of the forming rod 401 is inserted into the die cavity 3, the other end of the forming rod 401 is fixedly connected with the translation seat 404, the shaft sleeve 402 is movably sleeved with the forming rod 401, one end of the shaft sleeve 402 is provided with external threads, the end of the shaft sleeve 402 with external threads is inserted into the die cavity 3, the shaft sleeve 402 is movably connected with the translation seat 404, the shaft sleeve 402 is connected with the first side slider 403 and the two are linked, the first side slider 403 is connected with a first inclined guide column 406, the first inclined guide column 406 is connected with the upper die assembly 1, the translation driving device 405 is connected with the translation seat 404; the transmission assembly 6 comprises a gear set and a rotation driving device 605, the shaft sleeve 402 is drivingly connected with the rotation driving device 605 through the gear set; the second core-pulling assembly 5 comprises a second side slider 501, the second side slider 501 is movably arranged between the upper die assembly 1 and the lower die assembly 2, one end of the second side slider 501 is inserted into the die cavity 3, the second side slider 501 is oppositely arranged with the forming rod 401, the second side slider 501 is connected with a second inclined guide column 502, the second inclined guide column 502 is connected with the upper die assembly 1; the inclined ejector assembly 7 comprises a straight ejector block 702 and an inclined ejector rod 701, the straight ejector block 702 is fixedly connected in the lower die assembly 2, the upper end of the inclined ejector rod 701 is inserted into the die cavity 3, the lower end of the inclined ejector rod 701 is movably connected with the straight ejector block 702, an α angle is formed between the straight ejector block 702 and the inclined ejector rod 701, 0°<α<90°; the straight ejector assembly 8 comprises a straight ejector rod 801 and a top plate 802 which can move up and down, the straight ejector rod 801 is movably erected in the lower die assembly 2, the upper end of the straight ejector rod 801 is inserted into the die cavity 3, the lower end of the straight ejector rod 801 is fixedly connected in the top plate 802, the straight ejector rod 801 is arranged in parallel with the straight ejector block 702.

[0038] In the structure, the first core pulling assembly 4, the second core pulling assembly 5, the inclined ejector assembly 7 and the straight ejector assembly 8 are designed, and the first core pulling assembly 4 is used in cooperation with the transmission assembly 6, so that the demolding difficulty of the plastic connecting seat 111 with a threaded hole and a connected inclined hole in the injection molding process is effectively solved, the accurate molding of the complex internal structure is realized, and the production efficiency and product quality are improved. The gear set in the transmission assembly 6 is combined with the rotary drive device 605, so that the shaft sleeve 402 rotates and rotates, can be rotated and demolded with the molded product, and is linked with the first core pulling assembly 4 to realize the accurate core pulling action of the threaded hole. The second core pulling assembly 5 is added according to the product requirement, so as to form a groove on the side opposite to the connecting hole of the connecting seat 111, and the straight ejector assembly 8 is added for the straight demolding of the connecting seat 111. In the straight demolding process, the inclined hole on the connecting seat 111 is smoothly demolded in cooperation with the inclined ejector assembly 7.

[0039] Demolding process after the connecting seat 111 is molded

[0040] Core pulling during mold opening: Under the action of the injection molding machine, the upper mold assembly 1 is driven to move, and the upper mold assembly 1 moves away from the lower mold assembly 2, so that the mold is opened. During the movement of the upper mold assembly 1, the first inclined guide pillar 406 and the second inclined guide pillar 502 connected with the upper mold assembly 1 move with the upper mold assembly 1, and the first inclined guide pillar 406 and the second inclined guide pillar 502 drive the first side sliding block 403 and the second side sliding block 501 to move laterally, that is, the first side sliding block 403 and the second side sliding block 501 move away from the connecting seat 111, the movement of the first side sliding block 403 drives the shaft sleeve 402 to move laterally away from the connecting seat 111, and the rotation driving device 605 drives the shaft sleeve 402 to rotate through the gear set during the movement of the shaft sleeve 402, so that the shaft sleeve 402 moves laterally while rotating, and a thread is formed in the connecting hole of the connecting seat 111.

[0041] Second core pulling: After the mold is opened, the translation driving device 405 drives the translation seat 404 to move laterally away from the connecting seat 111, and the movement of the translation seat 404 drives the forming rod 401 to move away from the connecting seat 111, so that the forming rod 401 is separated from the connecting seat 111. During the movement of the forming rod 401, when the forming rod 401 abuts against the shaft sleeve 402 after movement, the forming rod 401 is driven by the translation seat 404 to further separate the shaft sleeve 402 from the connecting seat 111, until the forming rod 401 and the shaft sleeve 402 completely demold the connecting seat 111, and the second core pulling is completed.

[0042] Demolding of the straight ejector assembly 8 in cooperation with the inclined ejector assembly 7: Under the action of the injection molding machine, the injection molding machine drives the top plate 802 to move upward, and the top rod drives the straight ejector rod 801 to move upward and eject the connecting seat 111.

[0043] Specifically, the upper die assembly 1 is connected with a locking pin 10, and the locking pin 10 is inserted into the shaft sleeve 402. The locking pin 10 is connected with the shaft sleeve 402, and the axial movement of the shaft sleeve 402 is limited. When the connecting seat 111 is formed, it can be ensured that the shaft sleeve 402 will not loosen, and the thread accuracy of the connecting hole of the connecting seat 111 is improved. When demolding, the locking pin 10 is driven away from the shaft sleeve 402 by the movement of the upper die assembly 1, so that the connection between the locking pin 10 and the shaft sleeve 402 is disconnected, thereby enabling the shaft sleeve 402 to move along its axial direction.

[0044] Specifically, the gear set includes a first gear 601, a second gear 602, a third gear 603, and a fourth gear 604. The first gear 601 is located in the lower die assembly 2 and is connected with a rotary drive device 605. The second gear 602 is located above the first gear 601 and is connected with the first gear 601 in meshing. The third gear 603 is located above the second gear 602 and is connected with the second gear 602 in meshing. The fourth gear 604 is connected with the shaft sleeve 402 and the third gear 603 in meshing, respectively. The third gear 603 is arranged in the translation seat 404 and can slide relative to the second gear 602. The multi-stage gear transmission design facilitates the control of the rotation speed of the shaft sleeve 402, so that the rotation speed of the shaft sleeve 402 can be adapted to the lateral translation speed.

[0045] Specifically, the translation seat 404 includes a first fixed block 4041, a second fixed block 4042, and a third fixed block 4043. The first fixed block 4041, the second fixed block 4042, and the third fixed block 4043 are sequentially stacked and connected from the inside of the mold to the outside. The first fixed block 4041 and the second fixed block 4042 have a space for accommodating the third gear 603. The first side sliding block 403 is movably arranged on the third fixed block 4043. This makes the internal structure of the mold more compact.

[0046] Specifically, the fourth gear 604 is movably sleeved with the shaft sleeve 402. This further makes the internal structure of the mold more compact.

[0047] Specifically, the second gear 602 and the third gear 603 are both connected with a bearing 11. This makes the rotation of the second gear 602 and the third gear 603 smooth.

[0048] Specifically, the first side sliding block 403 is connected with the shaft sleeve 402 through a connecting rod 12. This realizes the linkage between the first side sliding block 403 and the shaft sleeve 402.

[0049] Specifically, the first fixed block 4041 is provided with an axle hole penetrating through both ends thereof, the shaft sleeve 402 is matched with the axle hole, and an activity space 13 is reserved between the end of the shaft sleeve 402 away from the mold cavity 3 and the second fixed block 4042; the forming rod 401 penetrates through the axle hole, and the end of the forming rod 401 away from the mold cavity 3 is connected with the second fixed block 4042. Further, the internal structure of the mold is more compact.

[0050] Specifically, the first fixed block 4041 is provided with an axle hole penetrating through both ends thereof, the shaft sleeve 402 is matched with the axle hole, and an activity space 13 is reserved between the end of the shaft sleeve 402 away from the mold cavity 3 and the second fixed block 4042; the forming rod 401 penetrates through the axle hole, and the end of the forming rod 401 away from the mold cavity 3 is connected with the second fixed block 4042. Further, the internal structure of the mold is more compact.

[0051] Specifically, the first fixed block 4041 is provided with an axle hole penetrating through both ends thereof, the shaft sleeve 402 is matched with the axle hole, and an activity space 13 is reserved between the end of the shaft sleeve 402 away from the mold cavity 3 and the second fixed block 4042; the forming rod 401 penetrates through the axle hole, and the end of the forming rod 401 away from the mold cavity 3 is connected with the second fixed block 4042. Further, the internal structure of the mold is more compact.

[0052] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A forming die for a threaded socket, comprising an upper die assembly and a lower die assembly, an upper die forming plate in the upper die assembly and a lower die forming plate in the lower die assembly being closed together and forming a die cavity therebetween, characterised in that: Further comprising a first core-pulling assembly, a second core-pulling assembly, a transmission assembly, an inclined ejector assembly and a straight ejector assembly; the first core-pulling assembly comprises a forming rod, a shaft sleeve, a first side slider, a translation seat and a translation driving device, the translation seat is movably arranged between the upper die assembly and the lower die assembly, one end of the forming rod is inserted into the mold cavity, the other end of the forming rod is fixedly connected with the translation seat, the shaft sleeve is movably sleeved with the forming rod, one end of the shaft sleeve is provided with external threads, the end of the shaft sleeve with external threads is inserted into the mold cavity, the shaft sleeve is movably connected with the translation seat, the shaft sleeve is connected with the first side slider and both are linked, the first side slider is connected with a first inclined guide column, the first inclined guide column is connected with the upper die assembly, the translation driving device is connected with the translation seat; the transmission assembly comprises a gear set and a rotation driving device, the shaft sleeve is in transmission connection with the rotation driving device through the gear set; the second core-pulling assembly comprises a second side slider, the second side slider is movably arranged between the upper die assembly and the lower die assembly, one end of the second side slider is inserted into the mold cavity, the second side slider is oppositely arranged with the forming rod, the second side slider is connected with a second inclined guide column, and the second inclined guide column is connected with the upper die assembly; the inclined ejector assembly comprises a straight ejector block and an inclined ejector rod, the straight ejector block is fixedly connected in the lower die assembly, the upper end of the inclined ejector rod is inserted into the mold cavity, the lower end of the inclined ejector rod is movably connected with the straight ejector block, an alpha angle is formed between the straight ejector block and the inclined ejector rod, and 0°<α<90°; the straight ejector assembly comprises a straight ejector rod and an up-and-down movable top plate, the straight ejector rod is movably erected in the lower die assembly, the upper end of the straight ejector rod is inserted into the mold cavity, the lower end of the straight ejector rod is fixedly connected in the top plate, and the straight ejector rod is arranged in parallel with the straight ejector block.

2. A forming die for a threaded boss according to claim 1, characterized in that: The upper die assembly is connected with a locking pin, and the locking pin is inserted into the shaft sleeve.

3. A forming die for a threaded boss as defined in claim 1, wherein: The gear set comprises a first-stage gear, a second-stage gear, a third-stage gear and a fourth-stage gear, the first-stage gear is located in the lower die assembly, the first-stage gear is connected with the rotation driving device, the second-stage gear is located above the first-stage gear and is in meshing connection with the first-stage gear, the third-stage gear is located above the second-stage gear and is in meshing connection with the second-stage gear, and the fourth-stage gear is in meshing connection with the shaft sleeve and the third-stage gear respectively. The third-stage gear is arranged in the translation seat, and the third-stage gear can slide relative to the second-stage gear.

4. A forming die for a threaded socket according to claim 3, wherein: The translation seat comprises a first fixed block, a second fixed block and a third fixed block, the first fixed block, the second fixed block and the third fixed block are sequentially and integrally connected from inside to outside of the mold, and the first fixed block and the second fixed block have a space for accommodating the third-stage gear, and the first side slider is movably arranged on the third fixed block.

5. A forming die for a threaded boss according to claim 3, wherein: The fourth-stage gear is movably sleeved with the shaft sleeve.

6. A forming die for a threaded boss according to claim 3, wherein: Both the second-stage gear and the third-stage gear are connected with bearings.

7. A forming die for a threaded socket according to claim 4, wherein: The first side slider is connected with the shaft sleeve through a connecting rod.

8. A forming die for a threaded socket according to claim 7, wherein: The first fixed block is provided with an axle hole penetrating through both ends thereof, the axle sleeve is matched with the axle hole, and a space is reserved between the end of the axle sleeve away from the mold cavity and the second fixed block.

9. A forming die for a threaded socket according to claim 8, wherein: A first protective sleeve is arranged between the first fixed block and the axle sleeve, and the first protective sleeve is sleeved with the axle sleeve.

10. The forming mold for a threaded socket according to claim 1, wherein: A second protective sleeve is arranged between the axle sleeve and the forming rod, and the second protective sleeve is sleeved with the forming rod; and a channel is arranged in the forming rod along the axial direction thereof.

Citation Information

Patent Citations

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