Injection mold with self-locking function
By using a combination of drive devices, traction blocks and locking structures in the injection mold, the double limit of the drive block is achieved, which solves the expansion and contraction problem caused by pressure during the injection molding process of the oil cylinder, and improves the stability and molding of the core block. Quality of the product.
Patent Information
- Application Number
- CN202421103958.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-21
AI Technical Summary
During the injection molding process, the oil cylinder is easily subjected to pressure and undergoes slight expansion and contraction, which affects the stability of the core pellet and the molding quality of subsequent products.
An injection mold with self-locking function is designed. Through the combination of the drive device, the traction block, the drive block and the locking structure, the double limit of the drive block is realized to avoid the oil cylinder backing.
It effectively avoids the phenomenon of the driving device being pressure-retted, and improves the stability of the core pellet and the quality of the molded product.
Smart Images
Figure CN222271095U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of mold technology, and in particular to an injection mold with a self-locking function. Background Art
[0002] Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.
[0003] Cylinder components are often used in injection molds, for example, to demould the core block from the product through the cylinder, or to drive the ejector assembly to eject the product through the cylinder. For example, for the core block, when the cylinder drives the core block to the specified position, the stability of the core block is extremely important at this time, because the core block is also part of the product molding cavity, and the stability of the core block depends on the stability of the cylinder. During the injection molding process, the cylinder is easily affected by pressure and undergoes slight expansion and contraction, which will affect the molding quality of the subsequent product. Therefore, an injection mold with a self-locking function is proposed to solve the above technical problems. Utility Model Content
[0004] One of the purposes of the present application is to provide an injection mold with a self-locking function.
[0005] In order to achieve the above purpose, the technical solution adopted in the present application is: an injection mold with a self-locking function, comprising a driving device, a traction block, a driving block and a locking structure, wherein the driving device is installed in the mold, the traction block is installed at the output end of the driving device, the driving block is slidably matched with the mold and the traction block respectively, and the locking structure is installed on the traction block and connected to the driving block; the driving device is suitable for driving the traction block and the driving block to move synchronously so that the driving block moves to a set position, and then the driving device is suitable for driving the locking structure to cooperate with the mold through the traction block so that the driving block and the mold are locked.
[0006] Preferably, the locking structure includes a locking block and a locking groove, the locking block is slidably connected to the driving block and is connected to the traction block through a guide assembly, and the locking groove is arranged in the mold; when locking the driving block, the traction block is suitable for acting on the locking block through the guide assembly to move the locking block into the locking groove.
[0007] Preferably, the guide assembly comprises an inclined guide groove and an inclined guide bar, the inclined guide groove is arranged on the locking block, and the inclined guide bar is arranged on the traction block; the locking block is suitable for moving under the inclined sliding cooperation of the inclined guide groove and the inclined guide bar.
[0008] Preferably, the guide assembly comprises a guide rod, both ends of which are hinged to the locking block and the traction block respectively; the traction block is suitable for driving the locking block to move through the guide rod.
[0009] Preferably, a pair of the locking block and the locking groove are provided, the locking block is located at both sides of the driving block, and the locking groove is provided at both sides of the mold and cooperates with the locking block.
[0010] Preferably, the driving block and the traction block are matched with each other through a sliding assembly, thereby achieving sliding matching between the traction block and the driving block.
[0011] Preferably, the sliding assembly comprises a sliding column and a sliding groove, the sliding column is mounted on the traction block, the sliding groove is arranged on the driving block, and the sliding column and the sliding groove are in sliding cooperation.
[0012] Preferably, one end of the traction block is inserted into the driving block, so that the guide assembly is located inside the driving block.
[0013] Compared with the prior art, the beneficial effects of this application are:
[0014] The utility model is provided with a traction block, a driving block and a locking structure. Under the action of the driving device, the driving block can be locked in the mold by the locking structure. At this time, the limit of the driving block is equivalent to the double limit of the locking structure and the driving device, thereby making the driving block more stable, effectively avoiding the phenomenon of the driving device retreating under pressure, thereby ensuring the quality of subsequent molded products. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the structure of the drive block of the utility model when it is disassembled.
[0017] Figure 3 It is a schematic diagram of the structure of the sliding component of the utility model.
[0018] Figure 4 This is a schematic diagram of the disassembled state of the driving block and the traction block of the utility model.
[0019] Figure 5It is a schematic structural diagram of the first embodiment of the guide assembly of the utility model.
[0020] Figure 6 It is a structural schematic diagram of the second embodiment of the guide assembly of the utility model.
[0021] In the figure: 1. driving device; 2. traction block; 3. driving block; 4. locking structure; 401. locking block; 402. locking groove; 5. sliding assembly; 501. sliding column; 502. sliding groove; 6. guide assembly; 601. oblique guide bar; 602. oblique guide groove; 603. guide rod. DETAILED DESCRIPTION
[0022] Below, the present application is further described 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.
[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.
[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0025] One of the preferred embodiments of the present application is as follows: Figures 1 to 6 As shown, an injection mold with a self-locking function includes a driving device 1, a traction block 2, a driving block 3 and a locking structure 4. The driving device 1 is installed in the mold, the traction block 2 is installed at the output end of the driving device 1, the driving block 3 is slidably matched with the mold and the traction block 2 respectively, and the locking structure 4 is installed on the traction block 2 and connected to the driving block 3.
[0026] It is understandable that the core block or ejector assembly in the mold can be installed on the drive block 3, and then the corresponding parts are driven to move by the movement of the drive block 3. When in use, we start the drive device 1. Due to the connection of the locking structure 4, the drive device 1 can drive the traction block 2 and the drive block 3 to move synchronously. When the core block or ejector assembly moves to a suitable position in the mold, the drive block 3 will also reach the set position (i.e., the position of sliding to the limit), and the locking structure 4 is always in a static state (non-working state) during this process. Then when the drive device 1 continues to run, the drive block 3 will remain static, and the traction block 2 will continue to move under the action of the drive device 1, and the moving traction block 2 will drive the locking structure 4 to cooperate with the mold so that the drive block 3 and the mold are locked.
[0027] It can be seen that when the driving block 3 is locked in the mold, the limit of the driving block 3 is equivalent to the double limit of the locking structure 4 and the driving device 1, which makes the driving block 3 more stable and effectively avoids the phenomenon of the driving device 1 (cylinder) retreating under pressure, thereby ensuring the quality of subsequent molded products.
[0028] It should be noted that the specific structure and working principle of the driving device 1 are well-known technologies to those skilled in the art, so they will not be elaborated in detail here; common driving devices 1 include hydraulic cylinders, pneumatic cylinders, and linear motors, etc., and those skilled in the art can choose according to actual needs.
[0029] In one of the embodiments of the present application, Figure 1 and Figure 4 As shown, the locking structure 4 includes a locking block 401 and a locking groove 402. The locking block 401 is slidably connected to the driving block 3 and is connected to the traction block 2 through the guide assembly 6. The locking groove 402 is arranged in the mold.
[0030] It can be understood that when the driving block 3 is locked, the driving device 1 will drive the traction block 2 to move, and the moving traction block 2 can act on the locking block 401 through the guide assembly 6, thereby moving the locking block 401 into the locking groove 402, that is, the locking block 401 and the locking groove 402 are plugged in and matched to achieve locking of the driving block 3.
[0031] Of course, there are many structural forms of the guide assembly 6, including but not limited to the following two:
[0032] Structure 1 (such as Figure 4 As shown): the guide assembly 6 includes an oblique guide groove 602 and an oblique guide bar 601, the oblique guide groove 602 is arranged on the locking block 401, and the oblique guide bar 601 is arranged on the traction block 2.
[0033] It is understandable that if Figure 5 As shown in (a) of FIG. 1 , it is assumed that the locking block 401 and the locking groove 402 in the mold are in a state of matching. When the driving block 3 is unlocked, as shown in FIG. Figure 5 As shown in (b), at this time, the driving device 1 drives the traction block 2 to move upward, that is, the inclined guide bar 601 moves upward, and then the locking block 401 moves in the direction away from the locking groove 402 under the inclined sliding cooperation of the inclined guide groove 602 and the inclined guide bar 601 until the locking block 401 and the locking groove 402 are separated.
[0034] Structure 2 (such as Figure 6 As shown): the guide assembly 6 includes a guide rod 603, and both ends of the guide rod 603 are hinged to the locking block 401 and the traction block 2 respectively.
[0035] It is understandable that if Figure 6 As shown, assuming that this is the state where the locking block 401 and the locking groove 402 in the mold are matched, when the driving block 3 is unlocked, the driving device 1 drives the traction block 2 to move upward, and the traction block 2 will act on the guide rod 603 to rotate, and the rotating guide rod 603 will pull the locking block 401 to move in the direction away from the locking groove 402 until the locking block 401 and the locking groove 402 are separated.
[0036] It should be noted that both methods can meet actual needs, and technicians in this field can choose according to actual conditions.
[0037] Based on the above embodiments, in one embodiment of the present application, Figure 4 As shown, in order to further improve the limiting stability of the driving block 3, the locking structure 4 preferably adopts a pair, that is, a pair of locking blocks 401 and locking grooves 402 are provided, the locking blocks 401 are located on both sides of the driving block 3, and the locking grooves 402 are provided on both sides of the mold and cooperate with the locking blocks 401; in this way, when the driving block 3 is limited and locked, both sides of the driving block 3 can be limited, so that the limiting symmetry of the driving block 3 is good, and the stability and reliability of the driving block 3 when limiting the position are improved. At the same time, the locking block 401 will not occupy too much space, which is conducive to achieving a better limiting effect in a limited space.
[0038] In this embodiment, Figure 4 As shown, the driving block 3 and the traction block 2 are matched with each other through the sliding assembly 5, thereby realizing the sliding match between the traction block 2 and the driving block 3.
[0039] As a further description of the above embodiment, the sliding assembly 5 includes a sliding column 501 and a sliding groove 502 . The sliding column 501 is installed on the traction block 2 , and the sliding groove 502 is arranged on the driving block 3 . The sliding column 501 and the sliding groove 502 are slidably matched.
[0040] It should be known that, through the cooperation between the sliding column 501 and the sliding groove 502 , on the premise of achieving sliding cooperation between the two, the relative sliding distance between the two can also be limited.
[0041] For example, Figure 4 As shown, assuming that the sliding column 501 moves to the front end of the sliding groove 502, the distance between the driving block 3 and the traction block 2 is the smallest, that is, the driving block 3 and the traction block 2 can be in a state of being offset; conversely, when the sliding column 501 moves to the rear end of the sliding groove 502, the distance between the driving block 3 and the traction block 2 is the largest, and then the traction block 2 can move backward synchronously with the driving block 3.
[0042] Further, if Figure 4 As shown, one end of the traction block 2 can be inserted into the driving block 3, so that the guide assembly 6 is located inside the driving block 3, as shown in FIG. Figure 1 As shown, the guide assembly 6 is hidden inside the driving block 3, which can protect the guide assembly 6 on the one hand, improve its aesthetics on the other hand, and reduce the risk of damage caused by external collisions, thereby extending the service life of the guide assembly 6 and improving the stability and reliability of the overall product. This design not only meets functional requirements, but also takes into account the perfect combination of user experience and product appearance.
[0043] The working principle of the utility model is:
[0044] We take the connection between one of the core blocks of the product and the drive block 3 as an example. At this time, the drive block 3 needs to be moved to a suitable position through the drive device 1, that is, the core block needs to be moved to a suitable position in the mold (lower mold) to form a part of the cavity.
[0045] Initially, the two locking blocks 401 are located in the driving block 3, and the traction block 2 and the driving block 3 are at the maximum distance with the cooperation of the sliding column 501 and the sliding groove 502, that is, the traction block 2 and the driving block 3 are far away from each other, and then the driving device 1 is started to extend to drive the traction block 2 to move. Since the locking block 401 and the locking groove 402 do not correspond to each other at this time, the locking block 401 will be against the side of the mold, that is, the locking block 401 is limited and will not move out of the driving block 3, and then the guide assembly 6 is equivalent to "fixing" the traction block 2 and the driving block 3, so the driving block 3 will move synchronously under the action of the traction block 2.
[0046] When the driving block 3 moves to the set (limit) position, that is, after the core block moves to the appropriate position of the mold, the locking block 401 and the locking groove 402 are in a corresponding state, so when the driving device 1 drives the traction block 2 to continue to move, the driving block 3 will remain stationary, and the traction block 2 can move the locking block 401 through the guide assembly 6 and insert it into the corresponding locking groove 402, thereby locking the driving block 3. Of course, at this time, the traction block 2 and the driving block 3 are also in a state of abutting each other (minimum distance), thereby realizing double limit of the driving block 3.
[0047] Similarly, when the core block is separated from the product, Figure 5 As shown in b, at this time, the driving device 1 is started to shorten to drive the traction block 2 to move back, and the traction block 2 will act on the two locking blocks 401 through the guide assembly 6 to move relatively and retract into the driving block 3, that is, the locking block 401 is separated from the locking groove 402 to release the lock on the driving block 3. When the traction block 2 and the locking block 401 are separated to the maximum distance, the driving block 3 will move synchronously with the traction block 2, thereby realizing the demoulding of the core block and the product.
[0048] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.
Claims
1. An injection mold with a self-locking function, characterized in that: include: A driving device, wherein the driving device is installed in the mold; A traction block, the traction block is installed at the output end of the driving device; A driving block, wherein the driving block is slidably matched with the mold and the traction block respectively; as well as A locking structure is installed on the traction block and connected to the driving block; the driving device is suitable for driving the traction block and the driving block to move synchronously so that the driving block moves to a set position, and then the driving device is suitable for driving the locking structure to cooperate with the mold through the traction block so that the driving block and the mold are locked.
2. The injection mold with self-locking function according to claim 1, characterized in that: The locking structure comprises a locking block and a locking groove, wherein the locking block is slidably connected to the driving block and connected to the traction block via a guide assembly, and the locking groove is arranged in the mold; When locking the driving block, the traction block is adapted to act on the locking block through the guide assembly so that the locking block moves into the locking groove.
3. The injection mold with self-locking function according to claim 2, characterized in that: The guide assembly comprises an oblique guide groove and an oblique guide bar, wherein the oblique guide groove is arranged on the locking block, and the oblique guide bar is arranged on the traction block; the locking block is suitable for moving under the inclined sliding cooperation of the oblique guide groove and the oblique guide bar.
4. The injection mold with self-locking function according to claim 2, characterized in that: The guide assembly comprises a guide rod, both ends of which are respectively hinged to the locking block and the traction block; the traction block is suitable for driving the locking block to move through the guide rod.
5. The injection mold with self-locking function according to any one of claims 2 to 4, characterized in that: The locking block and the locking groove are both provided in pairs. The locking blocks are located at both sides of the driving block, and the locking grooves are provided at both sides of the mold and cooperate with the locking blocks.
6. The injection mold with self-locking function according to claim 2, characterized in that: The driving block and the traction block are matched with each other through a sliding assembly, thereby realizing sliding matching between the traction block and the driving block.
7. The injection mold with self-locking function according to claim 6, characterized in that: The sliding assembly includes a sliding column and a sliding groove. The sliding column is installed on the traction block. The sliding groove is arranged on the driving block. The sliding column and the sliding groove are slidably matched.
8. The injection mold with self-locking function according to claim 7, characterized in that: One end of the traction block is inserted into the driving block so that the guide assembly is located inside the driving block.