Injection mold for an automobile armrest framework

Abstract

The application discloses an injection mold for an automobile armrest framework, which comprises a lower mold, a first core block, a second core block, a driving device and a core shaft. The first core block is slidably arranged on the lower mold and used for forming a clamping groove above a first side surface of a product. The second core block is slidably arranged on the lower mold and used for forming a second side surface of the product. The driving device is installed on the second core block. The core shaft is used for forming an axial groove one inside and an axial groove two outside of the second side surface of the product. The axial groove one and the axial groove two are located on both sides of the clamping groove and are perpendicular to the clamping groove. The core shaft is connected with an output end of the driving device. The application has the beneficial effects that the core shaft is independently driven and installed on the second core block, the core shaft can directly pass through the second core block and the first core block for subsequent forming, the internal structure of the mold is simplified, the manufacturing cost is reduced, and the core shaft can be preferentially demolded when demolding, thereby reducing the risk of breakage.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to an injection mold for an automotive armrest frame. Background Technology

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding include high production speed and efficiency, automated operation, a wide variety of designs and shapes (from simple to complex), and sizes ranging from large to small. It also produces dimensionally accurate products, facilitates product updates and replacements, and can create complex shapes. Injection molding is suitable for mass production and molding processes involving complex shapes.

[0003] like Figure 1 The diagram shows a partial structural schematic of the car armrest frame product 1. It has a first side 101 and a second side 102 that are perpendicular to each other. At the junction of the two sides and above the first side 101, there is a slot 103. On both sides of the slot 103, there are shaft groove 104 and shaft groove 2 105 that communicate with it. The shaft groove 2 105 is located on the second side 102. The two shaft grooves are coaxially arranged and perpendicular to the slot 103. During molding, three core parts are required for molding. The arrangement of the three core parts will occupy the space of the mold, thereby increasing the manufacturing cost and complexity of the mold, which needs to be improved. Utility Model Content

[0004] One of the objectives of this application is to provide an injection mold for an automotive armrest frame.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: an injection mold for an automotive armrest frame, comprising a lower mold, a first core block, a second core block, a driving device, and a mandrel. The first core block is slidably disposed on the lower mold and used to form a slot above a first side of the product. The second core block is slidably disposed on the lower mold and used to form a second side of the product. The driving device is mounted on the second core block. The mandrel is used to form a shaft groove one on the inner side and a shaft groove two on the outer side of the second side of the product. The shaft groove one and the shaft groove two are located on both sides of the slot and perpendicular to the slot. The mandrel is connected to the output end of the driving device. During mold closing, the mandrel is adapted to pass through the second core block and the first core block under the drive of the driving device.

[0006] Preferably, a mounting groove is provided on one side of the top of the second core block, and the driving device is mounted in the mounting groove and is flush with the top of the second core block.

[0007] Preferably, the mandrel includes a shaft body and a fixed shaft. The shaft body is used to form the first shaft groove and the second shaft groove of the product. The fixed shaft is installed at the output end of the drive device. The diameter of the shaft body is smaller than the diameter of the fixed shaft. The shaft body and the fixed shaft are detachably connected.

[0008] Preferably, the mounting end of the shaft has a T-shaped cross-section, and a T-shaped groove is provided on the outer side of the end of the fixed shaft, and the shaft is snap-fitted into the T-shaped groove.

[0009] Preferably, a sleeve is installed inside the second core block, the sleeve is sleeved on the mounting end of the shaft, and the end of the fixed shaft is sleeved on the end of the sleeve.

[0010] Preferably, the injection mold for the car armrest frame further includes an upper mold, a fixed plate, a drive mechanism, and a plurality of third-type core blocks. The third-type core blocks are slidably disposed on the lower mold and are all mounted on the fixed plate. The third-type core blocks are used to form a plurality of snaps on the inner side of the third side of the product. The drive mechanism is mounted on the upper mold and is connected to the fixed plate. The drive mechanism is adapted to drive the third-type core blocks to move through the fixed plate to open and close the mold.

[0011] Preferably, the driving mechanism includes a driving component, an inclined guide block, and an inclined guide groove disposed on the fixed plate. The driving component is vertically mounted on the upper mold, the inclined guide block is mounted on the output end of the driving component and slides in cooperation with the inclined guide groove, and the horizontal cross-section of the inclined guide block and the inclined guide groove are both rectangular.

[0012] Preferably, a locking block is provided inside the lower mold; when the mold is closed, the driving component is adapted to drive the inclined guide block to move down until it abuts against the locking block.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: This invention independently drives and mounts the mandrel on the second mandrel block, allowing the mandrel to pass directly through both the second and first mandrel blocks for subsequent molding. This simplifies the internal structure of the mold, reduces manufacturing costs, and allows the mandrel to be demolded first, thus reducing the risk of breakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the forming principle of an existing car armrest frame.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the mandrel of this utility model during mold closing.

[0017] Figure 4 For the present utility model Figure 3 A schematic diagram of the structure.

[0018] Figure 5 This is a schematic diagram of the mandrel of this utility model being installed on the drive device.

[0019] Figure 6 This is a schematic diagram of the disassembled mandrel structure of this utility model.

[0020] Figure 7 This is a schematic diagram of the overall drive mechanism of this utility model.

[0021] Figure 8 This is a schematic diagram of the third type of core block of this utility model installed on the fixing plate.

[0022] Figure 9 This is a schematic diagram of the state when the inclined guide block moves down to close and lock the mold, according to this utility model.

[0023] In the diagram: 1. Product; 101. First side; 102. Second side; 103. Slot; 104. Shaft groove one; 105. Shaft groove two; 106. Third side; 2. Lower mold; 3. First core block; 4. Second core block; 5. Drive device; 6. Mounting groove; 7. Core shaft; 701. Shaft body; 702. Fixed shaft; 8. Drive mechanism; 801. Drive component; 802. Inclined guide block; 803. Inclined guide groove; 9. Fixed plate; 10. Third core block; 11. T-slot; 12. Sleeve; 13. Locking block. Detailed Implementation

[0024] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0026] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0027] One preferred embodiment of this application, such as Figures 1 to 9 As shown, an injection mold for an automotive armrest frame includes a lower mold 2, a first core block 3, a second core block 4, a drive device 5, and a core shaft 7. The first core block 3 is slidably disposed on the lower mold 2 and is used to form a slot 103 above the first side 101 of the product 1. The second core block 4 is slidably disposed on the lower mold 2 and is used to form the second side 102 of the product 1. The drive device 5 is installed on the second core block 4. The core shaft 7 is used to form a shaft groove 104 on the inner side and a shaft groove 105 on the outer side of the second side 102 of the product 1. The shaft groove 104 and the shaft groove 105 are located on both sides of the slot 103 and are perpendicular to the slot 103. The core shaft 7 is connected to the output end of the drive device 5. The sliding directions of the first core block 3 and the second core block 4 are perpendicular to each other, and the demolding of the first core block 3 and the second core block 4 can be achieved by the cooperation of a slanted guide rod and a slanted guide post. Alternatively, an additional drive source can be installed.

[0028] It is understandable that during mold closing, such as Figure 3 As shown, the driving device 5 can drive the mandrel 7 through the second mandrel block 4 and the first mandrel block 3 to a set position, thereby realizing the formation of the first shaft groove 104 and the second shaft groove 105 on the subsequent product 1. Of course, there is a sequence during mold opening, that is, the driving device 5 will first drive the mandrel 7 to pull the core, and then move the first mandrel block 3 and the second mandrel block 4 to demold; because the mandrel 7 passes through the second mandrel block 4, if demolding is done at the same time, the movement of the second mandrel block 4 will cause the mandrel 7 to break, that is, the movement of the two will interfere.

[0029] It should be noted that in existing technologies, such as Figure 1 As shown, it requires two mandrels 7, which are respectively set at the inner and outer positions of the second side 102. The mandrel 7 located in the inner position needs to be equipped with a drive source, which will make the internal structure of the mold more complex and increase the cost. In addition, if the mandrel 7 on the outer position is installed on the second core block 4, since there are also many deep rib structures on the second side 102, when the second core block 4 and the mandrel 7 move synchronously to demold, the second side 102 will easily deform under the action of adhesion force. This will cause the mandrel 7 to be subjected to a large external force, resulting in demolding difficulties or even breakage.

[0030] Therefore, this application combines the original two mandrels 7 into one, and the mandrel 7 is independently driven and installed on the second mandrel block 4, which means it does not need to be installed in a more inner position of the lower mold 2. The mandrel 7 can directly pass through the second mandrel block 4 and the first mandrel block 3 for subsequent molding, which simplifies the internal structure of the mold and reduces manufacturing costs. Moreover, during the demolding process, the mandrel 7 is demolded first, while other positions of the product 1 are limited, which makes the demolding of the mandrel 7 smoother, thereby effectively reducing the risk of breakage of the mandrel 7.

[0031] In a further preferred embodiment, an installation groove 6 can be provided on one side of the top of the second core block 4, and the drive device 5 is installed in the installation groove 6, and the drive device 5 is flush with the top of the second core block 4. This design makes the entire mold structure more compact, reduces the space occupied by the drive device 5 outside the mold, and also avoids the interference problem that may be caused by the protrusion of the drive device 5, thereby improving the overall stability and reliability of the mold.

[0032] In one embodiment of this application, such as Figure 5 As shown, the mandrel 7 includes a shaft body 701 and a fixed shaft 702. The shaft body 701 is a shaft groove 104 and a shaft groove 105 for molding product 1. The fixed shaft 702 is installed at the output end of the drive device 5. The diameter of the shaft body 701 is smaller than the diameter of the fixed shaft 702 (i.e., the fixed shaft 702 is thicker than the shaft body 701). The shaft body 701 and the fixed shaft 702 are detachably connected.

[0033] Understandably, if the mandrel 7 were a one-piece structure, the entire unit would need to be replaced in case of damage. However, by dividing the mandrel 7 into a shaft body 701 and a fixed shaft 702, when the shaft body 701, which is used for molding, is damaged, only the shaft body 701 needs to be disassembled and replaced, which greatly reduces maintenance costs. In addition, making the fixed shaft 702 thicker enhances the stability of its connection with the output end of the drive device 5, allowing it to withstand greater forces during driving without being easily damaged, thus ensuring the reliability of the mandrel 7 in operation.

[0034] like Figure 6 As shown, the specific detachable connection method of the mandrel 7 is as follows: the cross-section of the mounting end of the shaft 701 is T-shaped, that is, a locking block is connected to the mounting end of the shaft 701; and a T-shaped groove 11 is provided on the outer side of the end of the fixed shaft 702 near the shaft 701. During installation, the mounting end of the shaft 701 can be directly inserted into the T-shaped groove 11, making disassembly and installation very convenient and quick.

[0035] Based on the above embodiments, the following problems may exist during use: since the shaft 701 is inserted into the T-slot 11, it is also easy to come out of the T-slot 11; in addition, the shaft 701 has no guide, so the overall stability is not good enough.

[0036] Therefore, in order to solve the above-mentioned technical problems, such as Figure 6 As shown, a sleeve 12 can be fixedly installed inside the second type of core block 4. The sleeve 12 is fitted onto the mounting end of the shaft 701, and the end of the fixed shaft 702 is fitted onto the end position of the sleeve 12. It can be understood that the sleeve 12 serves the following purposes: First, the sleeve 12 guides and limits the shaft 701, improving the stability of its operation; second, the sleeve 12 can also lock and limit the shaft 701, preventing it from dislodging from the T-slot 11. Third, the sleeve 12 can also guide and limit the fixed shaft 702, further improving its operational stability—achieving multiple benefits in one fell swoop.

[0037] In one embodiment of this application, such as Figure 7 As shown, the injection mold for the car armrest frame also includes an upper mold (not shown), a fixing plate 9, a drive mechanism 8, and multiple third core blocks 10. The third core blocks 10 are slidably disposed on the lower mold 2 and are all installed on the fixing plate 9. The third core blocks 10 are used to form multiple buckles on the inner side of the third side 106 of the product 1. The drive mechanism 8 is installed on the upper mold and is connected to the fixing plate 9.

[0038] Understandably, during mold opening, the upper mold's drive mechanism 8 drives the fixed plate 9 to move, thereby achieving simultaneous demolding of multiple third-type core blocks 10. This design allows multiple clips to complete the demolding operation at once, greatly improving production efficiency. Furthermore, it should be noted that in existing technologies, demolding of the third-type core block 10 requires a corresponding drive source on the lower mold 2. However, since the second-type core block 4 is located inside the molded product 1, the placement of the drive source is severely limited. The application of this invention, by installing the drive mechanism 8 on the upper mold, effectively solves this problem.

[0039] This application does not limit the specific structure of the drive mechanism 8, but the following specific embodiment is provided for reference: like Figure 7 and Figure 8 As shown, the drive mechanism 8 includes a drive component 801, an inclined guide block 802, and an inclined guide groove 803 disposed on the fixed plate 9. The drive component 801 is vertically installed at the bottom end of the upper mold, and the inclined guide block 802 is installed at the output end of the drive component 801 and slides in cooperation with the inclined guide groove 803.

[0040] Understandably, during mold opening, the driving component 801 drives the inclined guide block 802 upward, and through the inclined sliding cooperation between the inclined guide groove 803 and the inclined guide block 802, the fixing plate 9 drives the demolding of the third core block 10. Both the inclined guide block 802 and the inclined guide groove 803 have rectangular cross-sections, meaning their lengths are as long as possible. This is because the fixing plate 9 needs to simultaneously drive multiple third core blocks 10 for demolding, thus requiring a large driving force and stable guidance. The rectangular structure of the inclined guide block 802 and the inclined guide groove 803 provides better contact area and guiding stability.

[0041] Further optimization, such as Figure 9 As shown, a locking block 13 can be installed inside the lower mold 2, and the locking block 13 cooperates with the inclined guide block 802. During mold closing, the driving component 801 drives the inclined guide block 802 to move downward, thereby causing the third core block 10 to move and close the mold. When the third core block 10 moves to the set mold closing position, the inclined guide block 802 and the locking block 13 are in contact. This serves two purposes: firstly, it limits and locks the bottom end of the inclined guide block 802, thereby improving the stability of the inclined guide block 802; secondly, it limits the downward movement of the inclined guide block 802 to its extreme position. When the two are in contact, it means that the third core block 10 has moved to the mold closing position.

[0042] Finally, it should be noted that the specific structure and working principle of the drive device 5 and the drive component 801 are well known to those skilled in the art, and therefore will not be described in detail here; common types include hydraulic cylinders, pneumatic cylinders and linear motors, etc., and those skilled in the art can choose according to actual needs.

[0043] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An injection mold for a car armrest frame, characterized in that, include: Lower mold; The first core block is slidably disposed on the lower mold and used to form a slot above the first side of the product; The second core block is slidably disposed on the lower mold and used to form the second side of the product; A drive unit is mounted on the second core block; as well as The mandrel is used to form the inner groove 1 and the outer groove 2 on the second side of the product. The groove 1 and the groove 2 are located on both sides of the slot and are perpendicular to the slot. The mandrel is connected to the output end of the drive device. When the mold is closed, the mandrel is adapted to pass through the second core block and the first core block under the drive of the drive device.

2. The injection mold for the car armrest frame as described in claim 1, characterized in that: The second core block has a mounting groove on one side of its top end, and the drive device is mounted in the mounting groove and is flush with the top of the second core block.

3. The injection mold for the automotive armrest frame as described in claim 1 or 2, characterized in that: The mandrel includes a shaft body and a fixed shaft. The shaft body is used to form the first and second shaft grooves of the product. The fixed shaft is installed at the output end of the drive device. The diameter of the shaft body is smaller than the diameter of the fixed shaft. The shaft body and the fixed shaft are detachably connected.

4. The injection mold for the car armrest frame as described in claim 3, characterized in that: The mounting end of the shaft has a T-shaped cross-section, and a T-shaped groove is provided on the outer side of the end of the fixed shaft. The shaft is snapped into the T-shaped groove.

5. The injection mold for the car armrest frame as described in claim 4, characterized in that: A sleeve is installed inside the second type of core block. The sleeve is fitted onto the mounting end of the shaft, and the end of the fixed shaft is fitted onto the end of the sleeve.

6. The injection mold for the car armrest frame as described in claim 1, characterized in that: The injection mold for the car armrest frame also includes an upper mold, a fixed plate, a drive mechanism, and multiple third-type core blocks. The third-type core blocks are slidably disposed on the lower mold and are all mounted on the fixed plate. The third-type core blocks are used to form multiple snaps on the inner side of the third side of the product. The drive mechanism is mounted on the upper mold and is connected to the fixed plate. The drive mechanism is adapted to drive the third-type core blocks to move through the fixed plate to open and close the mold.

7. The injection mold for the car armrest frame as described in claim 6, characterized in that: The driving mechanism includes a driving component, an inclined guide block, and an inclined guide groove disposed on the fixed plate. The driving component is vertically mounted on the upper mold, and the inclined guide block is mounted on the output end of the driving component and slides in cooperation with the inclined guide groove. The horizontal cross-section of the inclined guide block and the inclined guide groove are both rectangular.

8. The injection mold for the car armrest frame as described in claim 7, characterized in that: A locking block is provided inside the lower mold; when the mold is closed, the driving component is adapted to drive the inclined guide block to move down until it abuts against the locking block.

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