Injection mold for forming connecting seat

Abstract

The utility model discloses an injection mold for forming a connecting seat, which comprises an upper mold assembly and a lower mold assembly, an upper mold forming plate in the upper mold assembly and a lower mold forming plate in the lower mold assembly are assembled up and down, and a mold cavity is formed between the upper mold forming plate and the lower mold forming plate; the injection mold is characterized by further comprising a first core-pulling assembly, a second core-pulling assembly, a transmission assembly, an inclined ejection assembly and a straight ejection 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 ejection assembly comprises a straight ejection block and an inclined ejection rod; the straight ejection assembly comprises a straight ejection rod and an ejection plate capable of moving up and down. The mold is simple in structure, smooth in demolding and capable of being applied to machining and manufacturing of connecting bases.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for forming a connecting seat. Background Art

[0002] In the field of injection molds, the holes on the product are generally molded and demoulded using a core-pulling mechanism, while for products with threads on the inner wall of the hole, a gear mechanism and a core-pulling mechanism are usually used to complete the molding and demoulding.

[0003] Figure 1 The figure shows a connector structure in an automotive accessory. The connector 111 is a plastic part that is manufactured by injection molding. The connector 111 has a connector hole 112 with a thread 113 on the inner wall. In theory, the connector hole 112 can be formed by combining a core pulling mechanism with a gear mechanism. However, Figure 2 It can be seen that the connecting seat 111 also has an inclined hole 114, which is connected to the connecting hole 112. If the inclined hole 114 also adopts a core-pulling mechanism to be molded and demoulded, the core-pulling direction of the inclined hole 114 must be different from the core-pulling direction of the connecting hole 112. The ordinary core-pulling mechanism combined with the gear mechanism cannot complete the demoulding of the connecting hole 112 and the inclined hole 114. Summary of the Invention

[0004] The purpose of the present utility model is to provide an injection mold for forming a connecting seat, so as to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an injection mold for forming a connecting seat, comprising an upper mold assembly and a lower mold assembly, the upper mold forming plate in the upper mold assembly and the lower mold forming plate in the lower mold assembly are clamped up and down to form a mold cavity between the two, and also 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 drive device, the translation seat is movably arranged between the upper mold assembly and the lower mold assembly, one end of the forming rod is inserted into the mold cavity, the other end of the forming rod is fixedly connected to the translation seat, the shaft sleeve is movably sleeved with the forming rod, one end of the shaft sleeve is provided with an external thread, the end of the shaft sleeve with an external thread is inserted into the mold cavity, the shaft sleeve is movably connected to the translation seat, the shaft sleeve is connected to the first side slider and the two are linked, the first side slider is connected to a first inclined guide column, the first inclined guide column is connected to the upper mold assembly, and the translation drive device is connected The translation seat; the transmission assembly includes a gear set and a rotation drive device, and the shaft sleeve is transmission-connected to the rotation drive device through the gear set; the second core-pulling assembly includes a second side slider, which is movably arranged between the upper mold assembly and the lower mold assembly, one end of the second side slider is inserted in the mold cavity, the second side slider is arranged opposite to the forming rod, the second side slider is connected to a second inclined guide column, and the second inclined guide column is connected to the upper mold assembly; the inclined ejector assembly includes a straight ejector block and an inclined ejector rod, the straight ejector block is fixed in the lower mold assembly, the upper end of the inclined ejector rod is inserted in the mold cavity, the lower end of the inclined ejector rod is movably connected to the straight ejector block, and an angle α is formed between the straight ejector block and the inclined ejector rod, 0°<α<90°; the straight ejector assembly includes a straight ejector rod and a ejector plate that can move up and down, the straight ejector rod is movably erected in the lower mold assembly, the upper end of the straight ejector rod is inserted in the mold cavity, the lower end of the straight ejector rod is fixed in the ejector plate, and the straight ejector rod is arranged parallel to the straight ejector block.

[0006] Compared with the prior art, the advantages of the present invention are: this technical solution effectively solves the demolding problem of the plastic connecting seat containing threaded connection holes and connected oblique holes during the injection molding process through the design of the first core pulling assembly, the second core pulling assembly, the inclined top assembly, and the straight top assembly, and the coordinated use of the first core pulling assembly and the transmission assembly, thereby achieving precise molding of complex internal structures and improving production efficiency and product quality. The gear set in the transmission assembly is combined with the rotary drive device to enable the shaft sleeve to rotate and rotate with the molded product for demolding. At the same time, it is linked with the first core pulling assembly to achieve precise core pulling action for the product with threaded holes. The second core pulling assembly is added based on product requirements. In order to be able to form a slot on the side opposite to the connecting hole of the connecting seat, the straight top assembly is added for straight top demolding of the connecting seat. During the straight top demolding process, the inclined top assembly is used in conjunction with the inclined top assembly to smoothly demold the oblique hole on the connecting seat.

[0007] Demolding process after the connector is formed:

[0008] Mold opening and core pulling: It is carried out under the action of the injection molding machine, driving the upper mold assembly to move, and the upper mold assembly moves in the direction away from the lower mold assembly, thereby performing mold separation; during the movement of the upper mold assembly, the first inclined guide column and the second inclined guide column connected to the upper mold assembly both follow the movement of the upper mold assembly, and the first inclined guide column and the second inclined guide column respectively drive the first side slider and the second side slider to move laterally, that is, the first side slider and the second side slider both move in the direction away from the connecting seat, and the movement of the first side slider drives the shaft sleeve to move laterally in the direction away from the connecting seat. While the shaft sleeve moves, the rotary drive device drives the shaft sleeve to rotate through the gear set, thereby realizing that the shaft sleeve rotates while moving laterally, thereby forming a thread in the connecting hole of the connecting seat.

[0009] Secondary core pulling: After the mold is opened, the translation drive device drives the translation seat to translate laterally away from the connecting seat. The movement of the translation seat drives the forming rod away from the connecting seat, causing the forming rod to disengage from the connecting seat. During the movement of the forming rod, when the forming rod contacts the sleeve after movement, the forming rod, driven by the translation seat, drives the sleeve further away from the connecting seat until the forming rod and sleeve are completely released from the connecting seat, completing the secondary core pulling.

[0010] The straight ejector assembly and the inclined ejector assembly cooperate to demould: under the action of the injection molding machine, the injection molding machine drives the ejector plate to move upward, and the ejector rod drives the straight ejector rod to eject the connecting seat upward.

[0011] In some embodiments of the present invention, the upper mold assembly is connected to a locking pin, and the locking pin is plugged into the shaft sleeve.

[0012] In some embodiments of the present invention, the gear set includes 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 mold assembly, the first-stage gear is connected to the rotation drive device, the second-stage gear is located above the first-stage gear, the second-stage gear is meshed with the first-stage gear, the third-stage gear is located above the second-stage gear and the two are meshed, and the fourth-stage gear is respectively meshed with the shaft sleeve and the third-stage gear; the third-stage gear is arranged in the translation seat, and the third-stage gear can slide relative to the second-stage gear.

[0013] In some embodiments of the present invention, the translation seat includes 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 overlapped and connected in sequence from the inside of the mold to the outside, and there is a space between the first fixed block and the second fixed block to accommodate the three-stage gear, and the first side slider is movably arranged on the third fixed block.

[0014] In some embodiments of the present invention, the fourth-stage gear is movably connected to the shaft sleeve.

[0015] In some embodiments of the present invention, both the second-stage gear and the third-stage gear are connected to bearings.

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

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

[0018] In some embodiments of the present invention, a first sleeve is provided between the first fixing block and the shaft sleeve, and the first sleeve is sleeved with the shaft sleeve.

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

[0020] Figure 1 Schematic diagram of the connector structure Figure 1 ;

[0021] Figure 2 Schematic diagram of the connector structure Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the decomposition of the utility model;

[0023] Figure 4 This is a schematic diagram of the layout of the first core pulling assembly;

[0024] Figure 5 Schematic diagram of the transmission component layout Figure 1 ;

[0025] Figure 6 Schematic diagram of the transmission component layout Figure 2 ;

[0026] Figure 7 This is a schematic diagram of the layout of the inclined roof assembly;

[0027] Figure 8 This is a schematic diagram of the straight top component layout;

[0028] Figure 9 This is an exploded schematic diagram of the first core pulling assembly;

[0029] Figure 10 This is a schematic diagram of the structure after mold opening and core pulling;

[0030] Figure 11 This is a schematic diagram of the structure after secondary core pulling;

[0031] Figure 12 This is a schematic diagram of the structure 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 pulling assembly; 5, second core pulling assembly; 6, transmission assembly; 7, inclined ejector assembly; 8, straight ejector assembly; 401, forming rod; 402, bushing; 403, first side slider; 404, translation seat; 405, translation drive device; 406, first inclined guide column; 601, first gear; 602, second gear; 603, third gear; 604, fourth gear Gear; 605, rotary drive device; 501, second side slider; 502, second inclined guide column; 701, inclined ejector rod; 702, straight ejector block; 801, straight ejector rod; 802, ejector 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] The present invention will be further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0036] The terms "including" and "having" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0037] like Figures 3-12 As shown, an injection mold for forming a connecting seat includes an upper mold assembly 1 and a lower mold assembly 2. The upper mold forming plate in the upper mold assembly 1 and the lower mold forming plate in the lower mold assembly 2 are clamped up and down to form a mold cavity 3 between the two. It also includes 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 includes a molding rod 401, a shaft sleeve 402, a first side slider 403, a translation seat 404 and a translation drive device 405. The translation seat 404 is movably arranged between the upper mold assembly 1 and the lower mold assembly 2 to form One end of the forming rod 401 is inserted into the mold cavity 3, the other end of the forming rod 401 is fixedly connected to the translation seat 404, the shaft sleeve 402 is movably connected to the forming rod 401, one end of the shaft sleeve 402 is provided with an external thread, the end of the shaft sleeve 402 with the external thread is inserted into the mold cavity 3, the shaft sleeve 402 is movably connected to the translation seat 404, the shaft sleeve 402 is connected to the first side slider 403 and the two are linked, the first side slider 403 is connected to the first oblique guide column 406, the first oblique guide column 406 is connected to the upper mold assembly 1, and the translation drive device 405 is connected to the translation seat 404; transmission Component 6 includes a gear set and a rotary drive device 605, and the shaft sleeve 402 is connected to the rotary drive device 605 through the gear set; the second core pulling component 5 includes a second side slider 501, which is movably arranged between the upper mold component 1 and the lower mold component 2, and one end of the second side slider 501 is inserted into the mold cavity 3, and the second side slider 501 is arranged opposite to the forming rod 401. The second side slider 501 is connected to the second inclined guide column 502, and the second inclined guide column 502 is connected to the upper mold component 1; the inclined ejector component 7 includes a straight ejector block 702 and an inclined ejector rod 7 01, the straight ejector block 702 is fixedly connected to the lower mold assembly 2, the upper end of the inclined ejector rod 701 is inserted into the mold cavity 3, the lower end of the inclined ejector rod 701 is movably connected to the straight ejector block 702, and an angle α is formed between the straight ejector block 702 and the inclined ejector rod 701, 0°<α<90°; the straight ejector assembly 8 includes a straight ejector rod 801 and a top plate 802 that can move up and down, the straight ejector rod 801 is movably erected in the lower mold assembly 2, the upper end of the straight ejector rod 801 is inserted into the mold cavity 3, the lower end of the straight ejector rod 801 is fixed to the top plate 802, and the straight ejector rod 801 is arranged parallel to the straight ejector block 702.

[0038] In the above structure: This technical solution effectively solves the demoulding problem of the plastic connecting seat 111 containing threaded connection holes and connected oblique holes during the injection molding process by designing the first core pulling component 4, the second core pulling component 5, the inclined top component 7, and the straight top component 8, and the first core pulling component 4 is used in conjunction with the transmission component 6, thereby achieving precise molding of complex internal structures and improving production efficiency and product quality. The gear set in the transmission component 6 is combined with the rotary drive device 605 to enable the shaft sleeve 402 to rotate and rotate with the molded product for demoulding. At the same time, it is linked with the first core pulling component 4 to achieve precise core pulling action with threaded holes. The second core pulling component 5 is added according to product requirements. In order to be able to form a slot on the side opposite to the connection hole of the connecting seat 111, the straight top component 8 is added for the straight top demoulding of the connecting seat 111. During the straight top demoulding process, the inclined top component 7 is cooperated to enable the oblique hole on the connecting seat 111 to be smoothly demoulded.

[0039] Demolding process of the connecting seat 111 after molding:

[0040] Mold opening and core pulling: It is carried out under the action of the injection molding machine, driving the upper mold assembly 1 to move, and the upper mold assembly 1 moves in the direction away from the lower mold assembly 2, thereby performing mold separation; during the movement of the upper mold assembly 1, the first inclined guide column 406 and the second inclined guide column 502 connected to the upper mold assembly 1 both follow the movement of the upper mold assembly 1, and the first inclined guide column 406 and the second inclined guide column 502 respectively drive the first side slider 403 and the second side slider 501 to move laterally, that is, the first side slider 403 and the second side slider 501 both move in the direction away from the connecting seat 111, and the movement of the first side slider 403 drives the shaft sleeve 402 to move laterally in the direction away from the connecting seat 111. While the shaft sleeve 402 moves, the rotation drive device 605 drives the shaft sleeve 402 to rotate through the gear set, thereby realizing that the shaft sleeve 402 rotates while moving laterally, thereby forming a thread in the connecting hole of the connecting seat 111.

[0041] Secondary core pulling: After the mold is opened, the translation drive device 405 drives the translation seat 404 to translate laterally in a direction away from the connecting seat 111. The movement of the translation seat 404 drives the forming rod 401 to move away from the connecting seat 111, causing the forming rod 401 to separate from the connecting seat 111. During the movement of the forming rod 401, when the forming rod 401 moves and abuts against the sleeve 402, the forming rod 401, driven by the translation seat 404, drives the sleeve 402 further away from the connecting seat 111 until the forming rod 401 and the sleeve 402 are completely released from the connecting seat 111, completing the secondary core pulling.

[0042] The straight ejector assembly 8 cooperates with the inclined ejector assembly 7 for demoulding: under the action of the injection molding machine, the injection molding machine drives the ejector plate 802 to move upward, and the ejector rod drives the straight ejector rod 801 to eject the connecting seat 111 upward.

[0043] Specifically, the upper mold assembly 1 is connected to a locking pin 10, which is plugged into the shaft sleeve 402. The locking pin 10 is connected to the shaft sleeve 402 to limit the axial movement of the shaft sleeve 402. When the connecting seat 111 is formed, it can ensure that the shaft sleeve 402 does not loosen, thereby improving the thread accuracy of the connecting hole of the connecting seat 111. During demolding, the upper mold assembly 1 moves, driving the locking pin 10 away from the shaft sleeve 402, disconnecting the locking pin 10 from the shaft sleeve 402, and allowing the shaft sleeve 402 to move along its axial direction.

[0044] Specifically, the gear set includes a primary gear 601, a secondary gear 602, a tertiary gear 603, and a quaternary gear 604. The primary gear 601 is located in the lower mold assembly 2 and is connected to the rotation drive device 605. The secondary gear 602 is located above the primary gear 601 and meshes with the primary gear 601. The tertiary gear 603 is located above the secondary gear 602 and meshes with the secondary gear 602. The quaternary gear 604 is meshed with the shaft sleeve 402 and the tertiary gear 603, respectively. The tertiary gear 603 is located in the translation seat 404 and can slide relative to the secondary 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 speed of its lateral translation.

[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. A space is provided between the first fixed block 4041 and the second fixed block 4042 to accommodate the third-stage gear 603. The first side slider 403 is movably mounted on the third fixed block 4043. This makes the internal structure of the mold more compact.

[0046] Specifically, the fourth-stage gear 604 is movably connected to the shaft sleeve 402, thereby further making the internal structure of the tool more compact.

[0047] Specifically, the secondary gear 602 and the tertiary gear 603 are both connected with bearings 11, so that the secondary gear 602 and the tertiary gear 603 can rotate smoothly.

[0048] Specifically, the first side slider 403 is connected to the shaft sleeve 402 through the connecting rod 12, so that the first side slider 403 and the shaft sleeve 402 are linked.

[0049] Specifically, the first fixing block 4041 is provided with axial holes extending through both ends thereof, and the shaft sleeve 402 engages with the axial holes. A movable space 13 is reserved between the end of the shaft sleeve 402 away from the mold cavity 3 and the second fixing block 4042. The forming rod 401 extends through the axial holes, and the end of the forming rod 401 away from the mold cavity 3 is connected to the second fixing block 4042. This further makes the internal structure of the mold more compact.

[0050] Specifically, a first sleeve 14 is provided between the first fixing block 4041 and the shaft sleeve 402 , and the first sleeve 14 is sleeved with the shaft sleeve 402 to reduce wear of the shaft sleeve 402 .

[0051] Specifically, a second sleeve 15 is provided between the shaft sleeve 402 and the forming rod 401 , and the second sleeve 15 is sleeved with the forming rod 401 ; a channel is provided in the forming rod 401 along its axial direction to reduce wear between the forming rod 401 and the shaft sleeve 402 .

[0052] The above describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and description merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for forming a connector, comprising an upper mold assembly and a lower mold assembly, wherein an upper mold forming plate in the upper mold assembly and a lower mold forming plate in the lower mold assembly are clamped together to form a mold cavity therebetween, characterized in that: The cam is connected to the upper mold assembly and the lower mold assembly, and the cam is connected to the upper mold assembly and the lower mold assembly, and the cam is connected to the lower mold assembly and the lower mold assembly. The sleeve is transmission connected to the rotation drive device through a gear set; the second core-pulling assembly includes a second side slider, the second side slider is movably arranged between the upper mold assembly and the lower mold assembly, one end of the second side slider is inserted in the mold cavity, the second side slider is arranged opposite to the forming rod, the second side slider is connected to a second inclined guide column, and the second inclined guide column is connected to the upper mold assembly; the inclined ejector assembly includes a straight ejector block and an inclined ejector rod, the straight ejector block is fixed in the lower mold assembly, the upper end of the inclined ejector rod is inserted in the mold cavity, and the lower end of the inclined ejector rod is movably connected to the straight ejector block; the straight ejector assembly includes a straight ejector rod and a top plate that can move up and down, the straight ejector rod is movably erected in the lower mold assembly, the upper end of the straight ejector rod is inserted into the mold cavity, the upper mold assembly is connected with a locking pin, and the locking pin is inserted into the sleeve.

2. The injection mold for forming a connecting seat according to claim 1, characterized in that: The gear set includes a primary gear, a secondary gear, a tertiary gear and a fourth gear, the primary gear is located in the lower mold assembly, the primary gear is connected to the rotation drive device, the secondary gear is located above the primary gear, the secondary gear is meshed with the primary gear, the third gear is located above the second gear and the two are meshed, and the fourth gear is meshed with the shaft sleeve and the third 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.

3. The injection mold for forming a connecting seat according to claim 2, characterized in that: The translation seat includes 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 overlapped and connected in sequence from the inside of the mold to the outside, and there is a space between the first fixed block and the second fixed block to accommodate the three-stage gear. The first side slider is movably set on the third fixed block.

4. The injection mold for forming a connecting seat according to claim 2, characterized in that: The fourth-stage gear is movably connected to the shaft sleeve, and the second-stage gear and the third-stage gear are both connected with bearings.

5. The injection mold for forming a connecting seat according to claim 1, characterized in that: The first side slider is connected to the shaft sleeve through a connecting rod.

6. The injection mold for forming a connecting seat according to claim 3, characterized in that: The first fixed block is provided with an axial hole passing through both ends thereof, the shaft sleeve cooperates with the axial hole, and a movable space is reserved between the end of the shaft sleeve away from the mold cavity and the second fixed block; the forming rod passes through the axial hole, and the end of the forming rod away from the mold cavity is connected to the second fixed block.

7. The injection mold for forming a connecting seat according to claim 3, characterized in that: A first sleeve is provided between the first fixing block and the shaft sleeve, and the first sleeve is sleeved with the shaft sleeve.

8. The injection mold for forming a connecting seat according to claim 1, characterized in that: A second sleeve is provided between the shaft sleeve and the forming rod, and the second sleeve is sleeved with the forming rod; a channel is provided in the forming rod along its axial direction.

9. The injection mold for forming a connecting seat according to claim 1, characterized in that: An included angle α is formed between the straight ejector block and the inclined ejector rod, 0°<α<90°, the lower end of the straight ejector rod is fixed to the ejector plate, and the straight ejector rod is arranged parallel to the straight ejector block.

Images