Composite core-pulling mold for forming barrier handle

Abstract

The utility model discloses a composite core-pulling mold for forming a chest stop handle, which comprises an upper mold set, a lower mold set, a front forming block and a rear forming block, wherein the front forming block and the rear forming block are arranged between the upper mold set and the lower mold set, and a forming cavity is formed between the front forming block and the rear forming block; the forming cavity is provided with a first inverted buckle forming module and a second inverted buckle forming module; the first inverted buckle forming module comprises a forming column, a transmission column connected to the rear side of the forming column and a first linear actuating module, the rear end of the forming column is hinged to the transmission column, and the first linear actuating module is in transmission connection with the transmission column; the second undercut forming module comprises a side forming block, a transmission sliding block connected to the rear side of the side forming block and a second linear actuating module, a transmission pull rod is arranged between the side forming block and the transmission sliding block, a plurality of inclined pulling blocks are fixedly arranged on the transmission sliding block, and a plurality of undercut mold cores are arranged in the side forming block in a penetrating mode; and the back-off mold core is connected with the inclined pulling block through an inclined chute.

Description

Technical Field

[0001] This utility model relates to the field of mold forming equipment technology, specifically to a composite core-pulling mold for forming a shift lever handle. Background Technology

[0002] In the molding of the column shifter handle, the handle is usually split into two shells. The two shells are spliced ​​together to form the overall outer contour of the handle. Since there are multiple undercut structures on the inner side of the handle, especially the internal snaps between the two shells and the transmission part at the end of the handle, the transmission part is usually placed on one of the shells to ensure the stability of the structure. This transmission part needs to be connected to the steering column to realize the forward and backward swing of the handle. It also has multiple undercut structures. Therefore, undercut core-pulling molds need to be set for each part in the molding mold. However, the small size of the column shifter handle makes the arrangement of multiple core-pulling structures difficult and requires high precision. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a composite core-pulling mold for forming a shift lever handle.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a composite core-pulling mold for forming a shift lever handle, comprising:

[0005] An upper module and a lower module, a front molding block and a rear molding block disposed between the upper module and the lower module, wherein a molding cavity is spaced apart between the front molding block and the rear molding block;

[0006] The shift lever handle includes a cylindrical body, an open shell and a transmission part extending sequentially from the cylindrical body, the open shell having a splicing buckle component, and the transmission part having a transmission buckle component.

[0007] Furthermore, the molding cavity is provided with at least a first undercut molding module corresponding to the opening shell of the shift lever handle, and a second undercut molding module corresponding to the transmission part;

[0008] The first undercut molding module includes:

[0009] Multiple forming columns are inserted through the rear forming block, a transmission column is connected to the rear side of the forming column, and a first linear actuation module is used to provide linear actuation force. The rear end of the forming column is hinged to the transmission column, and the first linear actuation module is connected to the transmission column in a driving connection. The forming column forms the forming surface of the splicing undercut component in the forming cavity.

[0010] The second undercut molding module includes:

[0011] The system includes a side forming block, a transmission slider connected to the rear side of the side forming block, and a second linear actuation module for providing linear actuation force. A transmission rod is provided between the side forming block and the transmission slider, and a sliding stroke is provided between the transmission slider and the transmission rod. Multiple inclined pull blocks are fixed on the transmission slider. Multiple undercut mold cores are inserted inside the side forming block. The undercut mold cores are connected to the inclined pull blocks through an inclined groove. The undercut mold cores are correspondingly arranged on the peripheral surface of the transmission part. The undercut mold cores are guided by the inclined groove to disengage from the transmission undercut component within the sliding stroke.

[0012] Furthermore, the active axes of the first linear actuation module and the second linear actuation module are inclined.

[0013] The rear forming block and the front forming block close together to form a cylindrical body and an open shell first cavity. The side forming block is inclined and joins the front forming block and the rear forming block. The side forming block joins the front forming block to form a transmission part second cavity. The first cavity and the second cavity constitute a forming cavity.

[0014] Furthermore, the transmission part includes a compliant surface placed in the side molding block and a plurality of undercut surfaces. The compliant surface is opposite to the opening direction of the open shell, and the side molding block and the second linear actuation module are arranged along the compliant surface.

[0015] Furthermore, the transmission slider is provided with a transmission groove, one end of the transmission rod is provided with a transmission protrusion, the transmission protrusion is placed in the transmission groove, and the boundary between the transmission protrusion and the transmission groove defines the sliding stroke. The other end of the transmission rod is fixedly connected to the side forming block, and the upper module is provided with a correction block pressed on the transmission groove.

[0016] Furthermore, the top of the side forming block is provided with a limiting groove, and the upper module is provided with a limiting block placed in the limiting groove. The limiting block is set to move at the end of the sliding stroke and move away from the limiting groove, and the limiting block abuts against the upper inclined pull block.

[0017] Furthermore, the inclined block is provided with a T-shaped protrusion facing the second cavity, the undercut die core is provided with a T-shaped groove matching the T-shaped protrusion, and the side forming block is provided with a demolding slide for the undercut die core to move within it. The demolding slide is arranged with respect to the forward release direction of the transmission undercut component, or the demolding slide is arranged perpendicular to the sliding direction of the second linear actuation module.

[0018] Furthermore, the bottom of the transmission slider and the side forming block is provided with a positioning slide rod arranged along the sliding direction of the second linear actuation module, and the end of the positioning slide rod is provided with an irregular protrusion;

[0019] The lower module is provided with a positioning slide for the irregular protrusion to slide within it, and the positioning slide is provided with an elastic protrusion located at the end of the sliding stroke.

[0020] Furthermore, the side-forming block is provided with a vent corresponding to the inclined block.

[0021] Furthermore, the first undercut molding module also includes:

[0022] A transmission base is connected to the first linear actuation module, and the transmission column is fixed on the transmission base;

[0023] The sliding block has a hinge groove at one end, the forming column is hinged in the hinge groove, the sliding block has a T-shaped protrusion at the other end, and the end of the transmission column has a T-shaped groove that matches the T-shaped protrusion. The T-shaped groove is set along the undercut direction of the splicing undercut component.

[0024] Furthermore, the transmission seat is also provided with a forming insert, and the rear forming block is also provided with a plurality of guide blocks. The guide blocks are arranged in the path of the forming column and the forming insert toward the forming cavity, and the forming insert abuts against the guide blocks.

[0025] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0026] This utility model is based on the main shell of the shift lever handle, and sets a first undercut molding module and a second undercut molding module for the splicing undercut component on the open shell and the transmission undercut component on the transmission part, respectively, and sets an action path that is independent of the mold opening action, so as to realize the integrated molding of the complex undercut structure of the shift lever handle.

[0027] Among them, the first undercut molding module adopts a linkage design of hinged molding column and transmission column, which can be smoothly pulled out along the undercut direction when the mold is opened, effectively reducing demolding resistance. At the same time, by setting multiple hinged molding columns, and each spliced ​​undercut component is small in shape, molding columns can be set at the position of multiple spliced ​​undercut components, and the compliant demolding surface of the opening shell can be formed on the rear molding block.

[0028] The second undercut molding module, through the cooperation of the inclined pull block and the inclined slide groove of the undercut mold core, enables multiple sets of undercut mold cores to complete the lateral core pulling synchronously within a limited stroke, avoiding product damage caused by traditional straight pulling. The first and second undercut molding modules correspond to the undercut structure of the open shell and the transmission part, respectively. With the help of the inclined linear actuation module, it not only ensures the precise mold closing of the cavity, but also realizes the sequential demolding of the undercut parts through the split core pulling action. In particular, the sliding stroke design between the transmission slider and the side molding block, together with the positioning structure of the limit block and the elastic protrusion, ensures the timing coordination of the multi-directional core pulling action.

[0029] In addition, the combination of the forming insert and the guide block enhances the movement stability of the forming column, the T-shaped slide connection improves the load-bearing capacity of the transmission structure, and the setting of the vent effectively eliminates the air trapping phenomenon in complex cavities. The overall structure combines forming accuracy and demolding reliability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the lower module of this utility model;

[0032] Figure 3 This is a schematic diagram of the upper module of this utility model;

[0033] Figure 4 This is a schematic diagram of the molding module of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the first undercut molding module of this utility model;

[0035] Figure 6 This is a cross-sectional view of the first undercut molding module of this utility model;

[0036] Figure 7 This is a cross-sectional view of the first undercut molding module of this utility model from another angle;

[0037] Figure 8 This is a structural diagram of the second undercut molding module, the front molding block, and the side molding block of this utility model;

[0038] Figure 9 This is a schematic diagram of the structure of the second inverted molding module of this utility model;

[0039] Figure 10 This is a cross-sectional schematic diagram of the second undercut molding module of this utility model;

[0040] Figure 11 This is a cross-sectional view of the second undercut molding module of this utility model from another angle;

[0041] Figure 12 This is an exploded view of the second inverted molding module of this utility model;

[0042] Figure 13 This is an exploded view of the second inverted molding module of this utility model from another angle.

[0043] Figure 14 This is an exploded view of the side forming block and the limiting stop block of this utility model;

[0044] Figure 15 This is a schematic diagram of the bottom structure of the side-forming block of this utility model;

[0045] Figure 16 This is a schematic diagram of the structure of the shift lever handle of this utility model;

[0046] Figure 17 This is a schematic diagram showing the cooperation between the shift lever handle and the molded components of this utility model;

[0047] Figure 18 This is a cross-sectional schematic diagram of the first molding module of this utility model;

[0048] Figure 19 This is a cross-sectional schematic diagram of the second molding module of this utility model;

[0049] In the diagram: 1. Upper module; 1.1. Limiting block;

[0050] 2. Lower module; 2.1. Positioning slide rail;

[0051] 3. Front forming block; 4. Rear forming block; 4.1. Guide block; 5. Forming cavity;

[0052] 6. Shift lever handle; 6.1. Cylindrical body; 6.2. Open shell; 6.21. Splicing inverted fastening component; 6.3. Transmission part; 6.31. Transmission inverted fastening component; 6.32. Flowing surface; 6.33. Inverted fastening surface;

[0053] 7. First inverted forming module; 7.1 Forming column; 7.2 Transmission column; 7.21 T-shaped slide; 7.3 First linear actuation module; 7.4 Transmission seat; 7.5 Sliding block; 7.51 Hinge groove; 7.52 T-shaped protrusion; 7.6 Forming insert;

[0054] 8. Second undercut molding module; 8.1 Side molding block; 8.11 Limiting groove; 8.12 Vent; 8.2 Transmission slider; 8.21 Transmission groove; 8.3 Second linear actuation module; 8.4 Transmission rod; 8.41 Transmission protrusion; 8.5 Sliding stroke; 8.6 Inclined pull block; 8.61 T-shaped protrusion; 8.7 Undercut mold core; 8.71 T-shaped slide; 8.8 Slide; 8.9 Transmission slide rod; 8.91 Irregular protrusion;

[0055] 9. Correction block; 10. First forming module; 10.1. Third linear actuation module; 10.2. Front tie rod;

[0056] 11. Second molding module; 11.1. Diagonal tie rod; 11.2. Upper pull seat; 11.3. Lower pull seat; 11.4. Lower slide seat; 11.5. Guide groove; 12. Main core; 13. Side core; Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0058] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0059] like Figure 1-19 As shown, a composite core-pulling mold for forming the shift lever handle 6 includes:

[0060] Upper module 1 and lower module 2, front molding block 3, rear molding block 4 and side molding block 8.1 are arranged between upper module 1 and lower module 2, main core 12 is inserted between front molding block 3 and rear molding block 4, and molding cavity 5 is spaced out between front molding block 3, rear molding block 4, side molding block 8.1 and main core 12;

[0061] The shift lever handle 6 serves as a component of the overall product, used to be assembled with another shift lever handle 6 to form the overall product. The shift lever handle 6 includes a cylindrical body 6.1, and an open shell 6.2 and a transmission part 6.3 extending sequentially from the cylindrical body 6.1. The open shell 6.2 extends obliquely about the cylindrical body 6.1, and the extension direction of the transmission part 6.3 is opposite to the extension direction of the cylindrical body 6.1. Both the open shell 6.2 and the transmission part 6.3 have an extension component in the height direction. Furthermore, the open shell 6.2 is provided with a splicing buckle member 6.21, which is provided in the opening direction of the open shell 6.2. The transmission part 6.3 is provided with a transmission buckle member 6.31.

[0062] The molding cavity 5 is provided with at least a first undercut molding module 7 corresponding to the opening shell 6.2 of the shift handle 6, and a second undercut molding module 8 corresponding to the transmission part 6.3. It also includes a first molding module 10 and a second molding module 11. The first molding module 10 corresponds to the front molding block 3 and drives the front molding block 3 to close or move away from the molding cavity 5. The second molding module 11 is provided with a corresponding main core 12 and drives the main core 12 to enter or leave the molding cavity 5. The second undercut molding module 8 is used to drive the side molding block 8.1 to close or move away from the molding cavity 5.

[0063] Specifically, the front forming block 3 and the rear forming block 4 together define the outer contour of the cylindrical body 6.1 and the open shell 6.2. The side forming block 8.1 defines the outer contour of the transmission part 6.3 and defines the connection contour between the open shell 6.2 and the transmission part 6.3 between the front forming block 3, the rear forming block 4 and the side forming block 8.1. The first undercut forming module 7 is used to form the splicing undercut component 6.21 on the open shell 6.2, and the second undercut forming module 8 is used to form the transmission undercut component 6.31.

[0064] Specifically, the direction of motion of the side forming block 8.1 is consistent with that of the second linear actuation module 8.3, and the axes of motion of the first linear actuation module 7.3 and the second linear actuation module 8.3 are inclined.

[0065] The rear forming block 4 and the front forming block 3 close together to form a first cavity of a cylindrical body 6.1 and an open shell 6.2. The side forming block 8.1 is inclined and joins the front forming block 3 and the rear forming block 4, and the side forming block 8.1 joins the front forming block 3 to form a second cavity of a transmission part 6.3. The first cavity and the second cavity constitute a forming cavity 5.

[0066] During the demolding process, the upper mold 1 separates from the lower mold 2, the second undercut molding module 8 and the side molding block 8.1 perform the first sequential action, the first molding module 10 and the rear molding block 4 perform the second sequential action, the second molding module 11 and the main core 12 perform the third sequential action, and the first undercut molding module 7 performs the fourth sequential action.

[0067] like Figures 5 to 7 As shown, the first undercut molding module 7 includes:

[0068] Multiple forming columns 7.1 are inserted through the rear forming block 4, a transmission column 7.2 is connected to the rear side of the forming column 7.1, and a first linear actuation module 7.3 is used to provide linear actuation force. There are multiple forming columns 7.1, and each forming column 7.1 is inclined towards the opening shell 6.2 and corresponds to a splicing undercut component 6.21. The rear end of the forming column 7.1 is hinged to the transmission column 7.2. The first linear actuation module 7.3 is connected to the transmission column 7.2. The forming column 7.1 forms the forming surface of the splicing undercut component 6.21 in the forming cavity 5. Preferably, the first linear actuation module 7.3 is perpendicular to the normal of the opening shell 6.2, and the hinge axis of the forming column 7.1 is perpendicular to the linear direction of the first linear actuation module 7.3.

[0069] After the shift handle 6 is formed, the transmission column 7.2 is driven by the first linear actuation module 7.3 to move, and the demolding space on the splicing undercut component 6.21 is provided by the hinged forming column 7.1, thereby completing the demolding of the open shell 6.2 part.

[0070] As a further embodiment of the first undercut molding module 7, the first undercut molding module 7 further includes:

[0071] The transmission seat 7.4 is connected to the first linear actuation module 7.3. The rear end of the transmission column 7.2 is fixed on the transmission seat 7.4, and the front end of the transmission column 7.2 extends out of the transmission seat 7.4 for connection to the forming column 7.1.

[0072] The sliding block 7.5 is slidably positioned at the rear end of the transmission column 7.2, and the front end of the sliding block 7.5 is provided with a hinge groove 7.51.

[0073] The forming column 7.1 is hinged in the hinge groove 7.51. The rear end of the sliding block 7.5 is provided with a T-shaped protrusion 7.52. The front end of the transmission column 7.2 is provided with a T-shaped groove 7.21 that matches the T-shaped protrusion 7.52. The T-shaped groove 7.21 is arranged along the undercut direction of the splicing undercut component 6.21. The sliding direction of the T-shaped groove 7.21 and the T-shaped protrusion 7.52 is perpendicular to the hinge direction of the forming column 7.1 and is not in the same direction as the linear direction of the first linear actuation module 7.3.

[0074] Specifically, the transmission base 7.4 is also provided with a forming insert 7.6. The rear end of the forming insert 7.6 is connected to the transmission base 7.4 and slides synchronously with the transmission base 7.4. The front end of the forming insert 7.6 is set towards the opening shell 6.2. The rear forming block 4 is also provided with multiple guide blocks 4.1. The guide blocks 4.1 are set in the path of the forming column 7.1 and the forming insert 7.6 toward the forming cavity 5. The forming insert 7.6 abuts against the guide block 4.1, thereby providing linear guidance for the forming insert 7.6.

[0075] like Figures 8 to 15 As shown, the second undercut molding module 8 includes:

[0076] The system includes a side forming block 8.1, a transmission slider 8.2 connected to the rear side of the side forming block 8.1, and a second linear actuation module 8.3 for providing linear actuation force. A transmission rod 8.4 is provided between the side forming block 8.1 and the transmission slider 8.2. The transmission rod 8.4 forms a transmission between the side forming block 8.1 and the transmission slider 8.2 in the direction of the second linear actuation module 8.3. Of course, the side forming block 8.1 and the transmission slider 8.2 are constrained to move in this linear direction.

[0077] Further reference Figure 12 and Figure 13In this embodiment, a sliding stroke 8.5 is provided between the transmission slider 8.2 and the transmission pull rod 8.4. A plurality of inclined pull blocks 8.6 are fixed on the transmission slider 8.2. A plurality of undercut mold cores 8.7 are inserted into the side forming block 8.1. The inclined pull blocks 8.6 are arranged in the same direction as the linear direction of the second linear actuation module 8.3. The undercut mold cores 8.7 are arranged perpendicular to the inclined pull blocks 8.6. The undercut mold cores 8.7 and the inclined pull blocks 8.6 are connected by an inclined groove 8.8. The groove 8.8 is specifically provided on the inclined pull blocks 8.6 and faces the undercut mold cores 8.7. The undercut mold cores 8.7 are correspondingly provided on the peripheral surface of the transmission part 6.3. The undercut mold cores 8.7 are guided by the inclined groove 8.8 within the sliding stroke 8.5 and disengage from the transmission undercut component.

[0078] The sliding stroke 8.5 refers to the relative movement stroke between the side forming block 8.1 and the transmission slider 8.2. That is, when the second linear actuation module drives the transmission slider 8.2, the side forming block 8.1 does not move within the sliding stroke 8.5, so that the undercut die 8.7 performs the demolding action within the side forming block 8.1 under the guidance of the inclined pull block 8.6. The inclined groove 8.8 on the inclined pull block 8.6 provides the undercut die 8.7 with a component perpendicular to the movement of the second linear actuation module, so that the undercut die 8.7 preferentially separates from the transmission undercut component 6.31 during the demolding process, and then moves further away from the shift handle 6 under the drive of the second linear actuation module.

[0079] from Figure 16 and Figure 17 As can be seen, specifically, the transmission part 6.3 includes a convex surface 6.32 inserted into the side forming block 8.1 and multiple undercut surfaces 6.33. The convex surface 6.32 is opposite to the opening direction of the open shell 6.2. The side forming block 8.1 and the second linear actuation module 8.3 are arranged along the convex surface 6.32, so that within the sliding stroke 8.5, the undercut mold core 8.7 disengages from the undercut surface 6.33 under the drive of the second linear actuation module 8.3. Subsequently, the side forming block 8.1 moves synchronously with the transmission slider 8.2 under the action of the transmission pull rod 8.4, thereby completing the separation of the convex surface 6.32 and the undercut surface 6.33 on the transmission part 6.3.

[0080] In this embodiment, the number of undercut surfaces 6.33 on the transmission part 6.3 is specifically three. The release surface 6.32 and the three undercut surfaces 6.33 are arranged around the periphery of the transmission part 6.3. The side core 13 is connected to the transmission slider 8.2 and is arranged perpendicular to the periphery of the transmission part 6.3. That is, the side core 13 is arranged in the same direction as the length direction of the inclined block 8.6. Thanks to the side forming block 8.1 being inclined to the front forming block 3 and the rear forming block 4, space is provided for the second undercut forming module 8, so that the undercut surfaces 6.33 and the internal holes on the transmission part 6.3 can be formed and demolded in one step by the second undercut forming module 8.

[0081] Further reference Figure 12 and Figure 13 As a further embodiment of the sliding stroke 8.5, the transmission slider 8.2 is provided with a transmission groove 8.21, preferably located on the top of the transmission slider 8.2 and the side forming block 8.1, to facilitate the arrangement of the transmission rod 8.4. One end of the transmission rod 8.4 is provided with a transmission protrusion 8.41, which is inserted into the transmission groove 8.21 of the transmission slider 8.2. The boundary between the transmission protrusion 8.41 and the transmission groove 8.21 defines the sliding stroke 8.5. The other end of the transmission rod 8.4... One end is fixedly connected to the side forming block 8.1. In the mold-closed state, there is a sliding stroke 8.5 between the transmission protrusion 8.41 and the transmission groove 8.21. This sliding stroke 8.5 corresponds to the stroke of the undercut die core 8.7 disengaging from the transmission undercut component 6.31. The upper mold 1 is provided with a correction block 9 pressed on the transmission groove 8.21. The correction block 9 is used to improve the stability of the transmission pull rod 8.4 to prevent the transmission pull rod from lifting in the transmission groove 8.21, which would cause the undercut die core 8.7 to fail to disengage properly.

[0082] Specifically, the top of the side forming block 8.1 is provided with a limiting groove 8.11, and the upper mold 1 is provided with a limiting block 1.1 placed in the limiting groove 8.11. The limiting block 1.1 is set to move at the end of the sliding stroke 8.5 and move away from the limiting groove 8.11. The purpose of the limiting block 1.1 is to ensure the positional stability of the side forming block 8.1 during the disengagement process of the undercut mold core 8.7. When the upper mold 1 performs the demolding action, the limiting block 1.1 disengages together, and at this time the side forming block can perform the demolding action under the action of the transmission rod 8.4.

[0083] like Figure 15 As shown, in some other embodiments, the transmission rod is also disposed at the bottom of the side forming block 8.1 and the transmission slider 8.2.

[0084] Preferably, the limiting block 1.1 abuts against the upper inclined pull block 8.6, so that the limiting block 1.1 not only limits the side forming block 8.1, but also further ensures the linear stability of the inclined pull block 8.6 when performing the demolding action, and plays a guiding role for the inclined pull block 8.6. In addition, the limiting groove 8.11 is provided through the part corresponding to the inclined pull block 8.6, so that the limiting block 1.1 acts directly on the inclined pull block 8.6. Furthermore, the through gap between the limiting block 1.1 and the limiting groove 8.11 also constitutes the ventilation gap of the upper inclined pull block 8.6, so as to avoid the influence of the mold pressure on the demolding action of the inclined pull block 8.6.

[0085] As a further embodiment of the transmission between the inclined pull block 8.6 and the undercut die core 8.7, the inclined pull block 8.6 is provided with a T-shaped protrusion 8.61 facing the second cavity, and the undercut die core 8.7 is provided with a T-shaped groove 8.71 that matches the T-shaped protrusion 8.61. The side forming block 8.1 is provided with a demolding slide for the undercut die core 8.7 to move within it. The demolding slide is arranged with respect to the forward direction of the transmission undercut member 6.31, or the demolding slide is arranged perpendicular to the sliding direction of the second linear actuation module 8.3. This improvement makes it possible to... The side forming block 8.1 provides guidance for the undercut die core 8.7 through the demolding slide, ensuring the stability of the undercut die core 8.7's movement. At the same time, the cooperation between the T-shaped protrusion 8.61 and the T-shaped slide 8.71 improves the reliability of the cooperation between the undercut die core 8.7 and the inclined pull block 8.6. Specifically, the T-shaped slide 8.71 and the T-shaped slider are inclined about the length direction of the inclined pull rod 11.1 and the linear direction of the second linear actuation module 8.3, thereby providing the undercut die core 8.7 with a component in the disengagement direction of the transmission undercut component 6.31.

[0086] Specifically, the bottom of the transmission slider 8.2 and the side forming block 8.1 are provided with positioning slide rods arranged along the sliding direction of the second linear actuation module, and the end of the positioning slide rod is provided with an irregular protrusion 8.91; the lower module 2 is provided with a positioning slide 2.1 for the irregular protrusion 8.91 to slide within it, and the positioning slide 2.1 is provided with an elastic protrusion, which is located at the end of the sliding stroke 8.5. Preferably, the elastic protrusion corresponds to the end of the sliding stroke 8.5, so as to play a positioning role after the transmission slider 8.2 completes the sliding stroke 8.5. In some other embodiments, the elastic protrusion is also connected to a micro switch, thereby improving the accuracy of the second linear actuation module 8.3 in executing the sliding stroke 8.5 and ensuring the timing coordination of the multi-directional core pulling action.

[0087] In the above embodiment, in order to improve the stability of the movement of the inclined pull block 8.6, the side forming block 8.1 is provided with a vent 8.12 corresponding to the inclined pull block 8.6. The vent 8.12 is located on the side of the side forming block 8.1 facing the forming cavity 5, thereby reducing the influence of the mold pressure on the movement of the inclined pull block 8.6, effectively eliminating the air trapping phenomenon in the complex cavity, and the overall structure has both forming accuracy and demolding reliability.

[0088] like Figure 18 As shown, the first molding module 10 includes:

[0089] The third linear actuation module 10.1 has a front pull rod 10.2 mounted on its actuating end. The front pull rod 10.2 is connected to the front forming block 3. The front forming block 3 corresponds to the back detachment surface 6.32 of the cylindrical body 6.1 and the open shell 6.2. The front pull rod 10.2 is L-shaped. The third linear actuation module 10.1 is located below the projection of the front pull rod 10.2, thereby effectively reducing the space occupied by the first forming module 10.

[0090] like Figure 19 As shown, the second molding module 11 includes:

[0091] The diagonal tie rod 11.1 and the upper pull seat 11.2 are fixed to the bottom of the upper module 1, and the diagonal tie rod 11.1 passes through the upper pull seat 11.2.

[0092] The pull-down seat 11.3 and the sliding seat 11.4 are provided. The lower part of the diagonal tie rod 11.1 passes through the pull-down seat 11.3. The pull-down seat 11.3 is slidably mounted on the sliding seat 11.4. The sliding seat 11.4 is provided with a guide groove 11.5 for the bottom of the diagonal tie rod 11.1 to pass through. The two ends of the guide groove 11.5 define the position of the diagonal tie rod 11.1 in the mold closing and demolding positions. The main core 12 is fixed on the pull-down seat 11.3.

[0093] During the demolding process, the second linear actuation module 8.3 performs a sliding stroke 8.5, causing the inclined pull block 8.6 to move the undercut mold core 8.7 within the side forming block 8.1 and disengage from the transmission undercut component 6.31 on the transmission part 6.3. Subsequently, the first forming module 10 actuates, and the third linear actuation module 10.1 moves the front forming block 3 away from the back convex surface 6.32 of the cylindrical body 6.1 and the open shell 6.2. Then, the upper module 1 further performs the mold opening action, and the inclined pull rod 11.1 of the second forming module 11 moves the pull seat 11.3 and the main core 12 out of the cylindrical body 6.1. During this process, the second linear actuation module 8.3 performs a sliding stroke 8.5, causing the inclined pull block 8.6 to move the undercut mold core 8.7 within the side forming block 8.1 and disengage from the transmission undercut component 6.31 on the transmission part 6.3. Module 8.3 further actuates, causing the transmission slider 8.2 to drive the side forming block 8.1 to perform a demolding action via the transmission rod. At this time, the sub-core is dislodged from the inner hole of the transmission part 6.3. Finally, the first linear actuation module 7.3 actuates, driving the transmission seat 7.4 to perform a demolding action. At this time, the transmission column 7.2 moves away from the opening shell 6.2, and the forming column 7.1 swings relative to the splicing undercut member 6.21 through the hinge, and provides a component along the demolding direction of the splicing undercut member 6.21 through the sliding block 7.5. With the further actuation of the transmission seat 7.4, the forming column 7.1 and the forming insert 7.6 are completely dislodged from the opening shell 6.2.

[0094] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A composite core-pulling mold for forming a shift lever handle, characterized in that, include: The upper module (1) and the lower module (2) are provided with a front molding block (3) and a rear molding block (4) between the upper module (1) and the lower module (2), and a molding cavity (5) is spaced between the front molding block (3) and the rear molding block (4). The shift lever handle (6) includes a cylindrical body (6.1), an open shell (6.2) and a transmission part (6.3) extending sequentially on the cylindrical body (6.1). The open shell (6.2) is provided with a splicing buckle member (6.21), and the transmission part (6.3) is provided with a transmission buckle member (6.31). Furthermore, the molding cavity (5) is provided with at least a first undercut molding module (7) corresponding to the opening shell (6.2) of the shift handle (6) and a second undercut molding module (8) corresponding to the transmission part (6.3); The first undercut molding module (7) includes: Multiple forming columns (7.1) are inserted through the rear forming block (4), a transmission column (7.2) is connected to the rear side of the forming column (7.1), and a first linear actuation module (7.3) for providing linear actuation force. The rear end of the forming column (7.1) is hinged to the transmission column (7.2). The first linear actuation module (7.3) is connected to the transmission column (7.2). The forming column (7.1) forms the forming surface of the splicing undercut component (6.21) in the forming cavity (5). The second undercut molding module (8) includes: The system includes a side forming block (8.1), a transmission slider (8.2) connected to the rear side of the side forming block (8.1), and a second linear actuation module (8.3) for providing linear actuation force. A transmission rod is provided between the side forming block (8.1) and the transmission slider (8.2), and a sliding stroke (8.5) is provided between the transmission slider (8.2) and the transmission rod. Multiple inclined pull blocks (8.6) are fixed on the transmission slider (8.2). Multiple undercut mold cores (8.7) are inserted inside the side forming block (8.1). The undercut mold cores (8.7) are connected to the inclined pull blocks (8.6) through an inclined groove (8.8). The undercut mold cores (8.7) are correspondingly arranged on the peripheral surface of the transmission part (6.3). The undercut mold cores (8.7) are guided by the inclined groove (8.8) within the sliding stroke (8.5) and disengage from the transmission undercut component.

2. The composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The movable axes of the first linear actuation module (7.3) and the second linear actuation module (8.3) are inclined. The rear molding block (4) and the front molding block (3) close together to form the first cavity of the cylindrical body (6.1) and the open shell (6.2). The side molding block (8.1) is inclined and joined to the front molding block (3) and the rear molding block (4). The side molding block (8.1) joins with the front molding block (3) to form the second cavity of the transmission part (6.3). The first cavity and the second cavity constitute the molding cavity (5).

3. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The transmission part (6.3) includes a compliant surface (6.32) inserted into the side forming block (8.1) and a plurality of undercut surfaces (6.33). The compliant surface (6.32) is opposite to the opening direction of the open shell (6.2). The side forming block (8.1) and the second linear actuation module (8.3) are arranged along the compliant surface (6.32).

4. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The transmission slider (8.2) is provided with a transmission groove (8.21), and one end of the transmission rod is provided with a transmission protrusion (8.41). The transmission protrusion (8.41) is placed in the transmission groove (8.21), and the boundary between the transmission protrusion (8.41) and the transmission groove (8.21) defines the sliding stroke (8.5). The other end of the transmission rod (8.4) is fixedly connected to the side forming block (8.1), and the upper module (1) is provided with a correction block (9) pressed on the transmission groove (8.21).

5. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The top of the side forming block (8.1) is provided with a limiting groove (8.11), and the upper module (1) is provided with a limiting block (1.1) placed in the limiting groove (8.11). The limiting block (1.1) is set to move at the end of the sliding stroke (8.5) and move away from the limiting groove (8.11), and the limiting block (1.1) abuts against the upper inclined pull block (8.6).

6. A composite core-pulling mold for forming a shift lever handle according to claim 2, characterized in that: The inclined block (8.6) is provided with a T-shaped protrusion (8.61) facing the second cavity. The undercut die core (8.7) is provided with a T-shaped groove (8.71) that matches the T-shaped protrusion (8.61). The side forming block (8.1) is provided with a demolding slide for the undercut die core (8.7) to move within it. The demolding slide is arranged with respect to the forward direction of the transmission undercut component (6.31), or the demolding slide is arranged perpendicular to the sliding direction of the second linear actuation module (8.3).

7. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The bottom of the transmission slider (8.2) and the side forming block (8.1) are provided with positioning slide rods arranged along the sliding direction of the second linear actuation module, and the end of the positioning slide rod is provided with an irregular protrusion (8.91); The lower module (2) is provided with a positioning slide (2.1) for the irregular protrusion (8.91) to slide within it. The positioning slide (2.1) is provided with an elastic protrusion, which is located at the end of the sliding stroke (8.5).

8. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The side forming block (8.1) is provided with a vent (8.12) corresponding to the inclined pull block (8.6).

9. A composite core-pulling mold for forming a shift lever handle according to claim 1, characterized in that: The first undercut molding module (7) also includes: The transmission seat (7.4) is connected to the first linear actuation module (7.3), and the transmission column (7.2) is fixed on the transmission seat (7.4); A sliding block (7.5) is provided with a hinge groove (7.51) at one end, and the forming column (7.1) is hinged in the hinge groove (7.51). The sliding block (7.5) is provided with a T-shaped protrusion (7.52) at the other end, and the transmission column (7.2) is provided with a T-shaped groove (7.21) that matches the T-shaped protrusion (7.52). The T-shaped groove (7.21) is provided along the undercut direction of the splicing undercut component (6.21).

10. A composite core-pulling mold for forming a shift lever handle according to claim 9, characterized in that: The transmission seat (7.4) is also provided with a forming insert (7.6), and the rear forming block (4) is also provided with a plurality of guide blocks (4.1). The guide blocks (4.1) are arranged in the path of the forming column (7.1) and the forming insert (7.6) toward the forming cavity (5), and the forming insert (7.6) abuts against the guide blocks (4.1).

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