A mold with built-in reset

Abstract

The present invention provides a mold with built-in pre-reset, comprising a lower fixed plate, square irons are fixed on the upper parts of both ends of the lower fixed plate, a lower template is fixed on the upper ends of the two square irons, a lower mold core is embedded in the upper end surface of the lower template, an upper template is provided on the upper end of the lower template, an upper mold core is embedded in the lower end surface of the upper template, a guide seat is also provided, a sliding block is provided inside the guide seat, a slidable connection is provided, a top plate movably connected is provided between the two square irons, and a push rod is vertically fixed on the upper end of the top plate. The mold provided by the present invention adopts a built-in pre-reset structure, which is convenient for grasping by a robot, and resets the push rod first. During the reset process, the slider is away from the cavity to avoid sliding of the slider and interference with the push rod. After the push rod is reset, the slider is reset by closing the mold, and the push rod and the slider are reset in turn, thereby reducing the risk of interference and collision between components when the mold is reset, and improving the service life of the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, in particular to a mold with built-in reset function. Background Art

[0002] During the mold design and production process, snap-fit ​​plastic products or other plastic products with special structures are generally processed using injection molds with side core-pulling mechanisms. For snap-fit ​​plastic products or other plastic products with special structures, in order to avoid mold collisions, the ejector pin must be reset first. However, the reset-first structure of existing molds is usually external, with complex structure, low precision, and easy failure. At the same time, the external reset-first structure also affects the robot's grasping of the molded product. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide a mold with built-in pre-reset to solve all or one of the problems mentioned in the above background technology.

[0004] Based on the above purpose, the present invention provides a mold with built-in pre-reset, which is used for the molding of products with buckles, including a lower fixed plate, square irons are fixed to the upper parts of both ends of the lower fixed plate, the upper ends of the two square irons are fixed to the lower template, the upper end surface of the lower template is embedded with a lower mold core, the upper end of the lower template is provided with an upper template, the lower end surface of the upper template is embedded with an upper mold core, the upper end surface of the upper template is fixed with an upper fixed plate, a cavity for product molding is enclosed between the upper mold core and the lower mold core, and a guide seat is also provided at the upper end of the lower mold core A sliding block with a sliding connection is provided inside the guide seat, one end of the slider extends into the cavity and forms an inner cavity for snap-on molding with the bottom surface of the cavity, a top plate with a movably connected connection is provided between the two square irons, a push rod is vertically fixed to the upper end of the top plate, the push rod passes through the lower template and the lower mold core to the bottom surface of the cavity, and a sliding assembly is provided at the lower end of the lower mold core. When the upper mold core and the lower mold core are separated, the sliding assembly drives the slider to slide in the direction away from the inner cavity, and when the upper mold core and the lower mold core are aggregated, the sliding assembly drives the slider to slide in the direction close to the inner cavity.

[0005] Optionally, the sliding assembly includes an inclined guide column fixed to the lower end of the upper mold core, an inclined hole is opened on the sliding block, the inclined guide column is passed through the inclined hole, the inclined guide column and the inclined hole are both inclined, and the end of the inclined guide column and the inclined hole closer to the inner cavity is the higher end.

[0006] Optionally, a guide column is vertically fixed between the lower template and the lower fixed plate, and the top plate is passed through the guide column and is slidably connected to the guide column.

[0007] Optionally, a through hole is provided on the bottom surface of the guide seat, and a safety hole is provided on the bottom surface of the slider. When the inclined guide column is pulled out from the inclined hole, the slider slides to the end of the guide seat away from the inner cavity and the safety hole is aligned with the inclined hole. A slidingly connected anti-collision rod is vertically penetrated inside the lower mold, and the top of the anti-collision rod passes through the lower mold core and is inserted into the through hole.

[0008] Optionally, the top plate includes an upper top plate and a lower top plate at its lower end, the bottom of the top rod is fixed to the upper end surface of the upper top plate, the upper end surface of the lower fixed plate is embedded with a pressure plate, the upper end of the pressure plate is fixed with a spring, the bottom of the anti-collision bar passes through the upper top plate and the lower top plate and is fixedly connected to the spring, the lower end surface of the lower top plate is provided with a slot, the bottom of the anti-collision bar is passed through the slot, the anti-collision bar includes a first rod portion, a second rod portion and a third rod portion arranged from top to bottom, the diameters of the first rod portion, the second rod portion and the third rod portion increase successively, the slot is a groove that cooperates with the third rod portion, and the upper end surface of the second rod portion is abutted against the lower end surface of the lower template.

[0009] From the above description, it can be seen that the built-in first-reset mold provided by the present invention adopts a built-in first-reset structure, which is convenient for the robot to grasp the product after molding, and resets the ejector rod first. During the reset process, the slider is away from the cavity to avoid the slider sliding and interfering with the ejector rod. After the ejector rod is reset, the slider is reset by closing the mold, and the ejector rod and the slider are reset in turn, thereby reducing the interference and collision between components when the mold is reset, and improving the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one or more embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a structural schematic diagram of the mold of the present invention;

[0012] Figure 2 This is a schematic structural diagram of the mold after reset of the present invention;

[0013] Figure 3 This is a schematic diagram of product ejection from the mold of the present invention;

[0014] Figure 4 It is a schematic diagram of the structure of the anti-collision bar and the top bar of the present invention;

[0015] Figure 5 It is an inverted schematic diagram of the guide seat and other structures of the present invention;

[0016] Figure 6 It is a structural schematic diagram of the guide seat and the slider of the present invention;

[0017] Figure 7 It is an inverted schematic diagram of the slider of the present invention;

[0018] Figure 8 for Figure 1 A in the middle is an enlarged schematic diagram;

[0019] Figure 9 This is a schematic structural diagram of a product with a buckle according to the present invention.

[0020] Among them, 1. Lower fixed plate; 2. Square iron; 3. Lower template; 4. Lower mold core; 5. Upper top plate; 6. Lower top plate; 7. Push rod; 8. Anti-collision bar; 9. Press plate; 10. Spring; 11. Product; 12. Slider; 13. Guide seat; 14. Slot; 15. Perforation; 16. Safety hole; 17. Oblique hole; 18. Upper mold core; 19. Upper template; 20. Upper fixed plate; 21. Oblique guide column; 22. Guide column. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0023] One or more embodiments of the present specification disclose a mold with a built-in pre-reset, which is used for molding a product 11 with a buckle, including a lower fixed plate 1, square irons 2 are fixed to the upper parts of both ends of the lower fixed plate 1, and lower templates 3 are fixed to the upper ends of the two square irons 2. The upper end surface of the lower template 3 is embedded with a lower mold core 4, and the upper end of the lower template 3 is provided with an upper template 19. The lower end surface of the upper template 19 is embedded with an upper mold core 18, and the upper end surface of the upper template 19 is fixed with an upper fixed plate 20. A cavity for molding the product 11 is enclosed between the upper mold core 18 and the lower mold core 4, and the upper end of the lower mold core 4 is also provided with a guide. The guide seat 13 is provided with a sliding block 12 inside the guide seat 13, one end of the slider 12 extends into the cavity and forms an inner cavity for snap-on molding with the bottom surface of the cavity, and a movably connected top plate is provided between the two square irons 2, and a top rod 7 is vertically fixed to the upper end of the top plate, and the top rod 7 passes through the lower template 3 and the lower mold core 4 to the bottom surface of the cavity, and a sliding component is provided at the lower end of the lower mold core 4. When the upper mold core 18 is separated from the lower mold core 4, the sliding component drives the slider 12 to slide in the direction away from the inner cavity. When the upper mold core 18 and the lower mold core 4 are aggregated, the sliding component drives the slider 12 to slide in the direction close to the inner cavity.

[0024] like Figure 1-9 As shown, the present invention provides a mold with built-in reset, which is mainly used for injection molding of products 11 with buckles. The mold includes a lower fixed plate 1, and square irons 2 are fixed to the upper parts of both ends of the lower fixed plate 1. The upper ends of the two square irons 2 are fixed with lower templates 3. A certain space is left between the lower template 3 and the lower fixed plate 1. The upper end surface of the lower template 3 is embedded with a lower mold core 4, and the upper end of the lower template 3 is provided with an upper template 19. The lower end surface of the upper template 19 is embedded with the lower mold core 4. The upper end of the upper template 19 is fixed with an upper fixed plate 20. A cavity for molding and injection molding of the product 11 is enclosed between the upper mold core 18 and the lower mold core 4. The upper end of the lower mold core 4 is also provided with There is a guide seat 13, and a sliding block 12 with a sliding connection is provided inside the guide seat 13. One end of the slider 12 extends into the cavity and forms an inner cavity for snap-on molding with the bottom surface of the cavity. A top plate is provided in the space between the two square irons 2. The top plate is movably connected and can be driven up or down by an external hydraulic cylinder. A push rod 7 is vertically fixed on the top plate. The push rod 7 passes through the lower template 3 and the lower mold core 4 to the bottom surface of the cavity. A sliding assembly is provided at the lower end of the lower mold core 4. When the upper mold core 18 is separated from the lower mold core 4, the sliding assembly drives the slider 12 away from the inner cavity. When the upper mold core 18 and the lower mold core 4 are aggregated, the sliding assembly drives the slider 12 close to the inner cavity.

[0025] The working principle of this mold is as follows: when the mold is closed, the upper mold core 18 and the lower mold core 4 are fitted together to form a molding cavity for injection molding of the product 11, and the sliding component drives the slider 12 to approach the inner cavity. The front end surface of the slider 12 and the bottom surface of the cavity form an inner cavity, which is used for the buckle molding of the product 11. After a certain period of time after the injection molding is completed, the product 11 is cooled and formed, and the slider 12 is stuck in the buckle. The product 11 cannot be demoulded directly, and the upper mold core 18 is moved away from the upper end of the lower mold core 4. When moving away, the sliding component first drives the slider 12 to move in the direction away from the inner cavity, that is, to move sideways from the lower end of the buckle. When the slider 12 is moved away from the lower end of the buckle, the product 11 can be directly lifted up from the cavity. The top plate is driven to rise by an external power source such as a cylinder, a hydraulic cylinder, etc. The top plate drives the ejector rod 7 to rise. The ejector rod 7 passes through the lower template 3 and the lower mold core 4. When the ejector rod 7 is raised to a sufficient height, the ejector rod 7 lifts the molded product 11 from the bottom surface of the cavity, so that the product 1 1 Demolding. After demoulding is completed, the product 11 is grabbed by the robot. Since there is no external reset mechanism above the lower mold core 4, it is convenient for the robot to grab it. After the molding of the product 11 is completed, the product 11 is removed and the mold needs to be reset to the injection molding station. To this end, the top plate is driven down first, so that the ejector pin 7 drops from the inside of the cavity to the bottom of the cavity. During the reset of the ejector pin 7, the sliding assembly keeps the slider 12 on the side of the guide seat 13 away from the inner cavity, so as to avoid interference between the ejector pin 7 and the slider 12 and affect the reset. When the ejector pin 7 is reset, the upper mold core 18 and the lower mold core 4 are closed to form a cavity for injection molding. After the upper mold core 18 and the lower mold core 4 are polymerized, the sliding assembly drives the slider 12 to move toward the inner cavity, so that the slider 12 and the bottom surface of the cavity form an inner cavity for snap-on molding. The reset of the slider 12 is after the ejector pin 7, which can effectively avoid interference between the slider 12 and the ejector pin 7 when they are reset, causing damage to the mold.

[0026] The mold provided by the present invention adopts a built-in pre-reset structure, which facilitates the grasping of the robot arm after the product 11 is formed. The ejector pin 7 is reset first. During the reset process, the slider 12 is away from the cavity to prevent the slider 12 from sliding and interfering with the ejector pin 7. After the ejector pin 7 is reset, the slider 12 is reset by closing the mold, and the ejector pin 7 and the slider 12 are reset in turn, thereby reducing the interference and collision between components when the mold is reset, and improving the service life of the mold.

[0027] In some optional embodiments, the sliding assembly includes an inclined guide column 21 fixed to the lower end of the upper mold core 18, an inclined hole 17 is opened on the slider 12, and the inclined guide column 21 is passed through the inclined hole 17. The inclined guide column 21 and the inclined hole 17 are both inclinedly arranged, and the end of the inclined guide column 21 and the inclined hole 17 closer to the inner cavity is the higher end.

[0028] When the upper mold core 18 is separated from the lower mold core 4, the inclined guide pillar 21 rises synchronously. During the rising process of the inclined guide pillar 21, the slider 12 is driven to slide, so that the slider 12 slides in the direction away from the cavity, so that the slider 12 is pulled out from under the buckle, which facilitates the ejector 7 to eject the product 11 out of the mold. When the upper mold core 18 and the lower mold core 4 are closed, the inclined guide pillar 21 is inserted into the inclined hole 17 of the slider 12. As the inclined guide pillar 21 descends, the slider 12 gradually slides toward the cavity. When the upper mold core 18 and the lower mold core 4 are completely closed, the inclined guide pillar 21 stops moving. The inclined guide pillar 21 is inserted into the inclined hole 17 to keep the slider 12 stationary, ensuring that the buckle can be smoothly formed after injection molding.

[0029] In some optional embodiments, a guide column 22 is vertically fixed between the lower template 3 and the lower fixed plate 1, and the top plate is passed through the guide column 22 and is slidably connected to the guide column 22 to guide the top plate in the vertical direction to facilitate its raising or lowering.

[0030] In some optional embodiments, a through hole 15 is provided on the bottom surface of the guide seat 13, and a safety hole 16 is provided on the bottom surface of the slider 12. When the inclined guide column 21 is pulled out from the inclined hole 17, the slider 12 slides to the end of the guide seat 13 away from the inner cavity and the safety hole 16 is aligned with the inclined hole 17. A slidingly connected anti-collision rod 8 is vertically penetrated inside the lower mold 3, and the top of the anti-collision rod 8 passes through the lower mold core 4 and is inserted into the through hole 15.

[0031] After the injection molding is completed and the mold is opened, the inclined guide post 21 rises, and the inclined guide post 21 drives the slider 12 to move in the direction away from the buckle, so that the slider 12 is pulled out from under the buckle. When the inclined guide post 21 is completely pulled out of the inclined hole 17, the slider 12 stops without external force. At this time, the position of the slider 12 makes its own safety hole 16 aligned with the bottom hole 15 of the guide seat 13. At the same time, a sliding anti-collision bar 8 is provided inside the lower template 3. The anti-collision bar 8 is driven to rise by an external power source such as a hydraulic cylinder, an air cylinder and other equipment, so that the top of the anti-collision bar 8 continues to rise and is inserted into the safety hole 16. Due to the action of the anti-collision bar 8, the slider 12 is locked and cannot slide. In this way, during the ejection of the product 11 and the resetting process of the ejector 7, the slider 12 is always locked by the anti-collision bar 8, and the slider 12 will not slide due to the movement of other parts of the mold. This can effectively avoid interference with other components due to the sliding of the slider 12.

[0032] In some optional embodiments, the top plate includes an upper top plate 5 and a lower top plate 6 located at its lower end, the bottom of the top rod 7 is fixed to the upper end surface of the upper top plate 5, the upper end surface of the lower fixed plate 1 is embedded with a pressure plate 9, and a spring 10 is fixed to the upper end of the pressure plate 9. The bottom of the anti-collision rod 8 passes through the upper top plate 5 and the lower top plate 6 and is fixedly connected to the spring 10. A slot 14 is provided on the lower end surface of the lower top plate 6, and the bottom of the anti-collision rod 8 is passed through the slot 14. The anti-collision rod 8 includes a first rod portion, a second rod portion and a third rod portion arranged from top to bottom, and the diameters of the first rod portion, the second rod portion and the third rod portion increase successively. The slot 14 is a groove that cooperates with the third rod portion, and the upper end surface of the second rod portion is abutted against the lower end surface of the lower template 3.

[0033] After the product 11 is injection molded, the mold is opened, the upper mold core 18 leaves the upper end of the lower mold core 4, and the inclined guide column 21 drives the slider 12 to move away from the cavity. Then, the upper top plate 5 and the lower top plate 6 are simultaneously raised under the action of an external power source. After the lower top plate 6 rises a short distance, the anti-collision rod 8 is immediately raised under the action of the spring 10, so that the third rod portion is immediately inserted into the safety hole 16 aligned with the perforation 15, locking the slider 12. The diameter of the second rod portion is larger than that of the first rod portion, and the upper end surface of the second rod portion contacts the lower end of the lower template 3. After the end face is reached, it no longer rises. The upper top plate 5 and the lower top plate 6 rise synchronously. At this time, the rising distance of the ejector rod 7 is small, and the product 11 has not been ejected yet. However, after the anti-collision bar 8 obtains a shorter rising distance, it is inserted into the safety hole 16, so that the slider 12 is completely locked. In this way, when the ejector rod 7 continues to rise, the slider 12 will not slide on its own and interfere with the ejector rod 7. The upper top plate 5 and the lower top plate 6 continue to rise, but the anti-collision bar 8 remains stationary. Only the ejector rod 7 rises synchronously. As the ejector rod 7 continues to rise, the product 11 is finally ejected. Then the reset work begins, the upper top plate 5 and the lower top plate 6 fall synchronously, and the upper top plate 5 drives the push rod 7 to fall. In the initial descending stage, the anti-collision bar 8 remains stationary, so that the slider 12 is locked. In this way, the push rod 7 remains stationary during the reset process, and does not interfere with the push rod 7 due to sliding. When the upper top plate 5 and the lower top plate 6 fall to a position close to the lower fixed plate 1, the push rod 7 has basically completed the reset, and the slot 14 on the lower end surface of the lower top plate 6 drives the third rod portion of the anti-collision bar 8 to fall, so that the anti-collision bar 8 is lowered as a whole The slide 12 is lowered and the spring 10 is compressed at the same time. The first rod portion is withdrawn from the safety hole 16 and retracted into the through hole 15, so that the slide 12 is no longer locked. In this way, when the mold is closed, the slide 12 can be driven by the inclined guide column 21 to slide. This partial structure realizes that the push rod 7 locks the slide 12 in the initial stage of jacking, and releases the slide 12 only after the push rod 7 has basically completed the reset, so that the lifting and reset of the push rod 7 will not interfere with the slide 12, further improving the safety of the mold use and avoiding damage to the mold caused by movement interference.

[0034] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as described above, which are not provided in detail for the sake of simplicity.

[0036] The one or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification shall be included within the scope of protection of this disclosure.

Claims

1. A mold with built-in reset, characterized in that: The invention is used for forming a product (11) with a buckle, comprising a lower fixing plate (1), square irons (2) fixed to the upper parts of both ends of the lower fixing plate (1), lower templates (3) fixed to the upper ends of the two square irons (2), the upper end surface of the lower template (3) is embedded with a lower mold core (4), the upper end of the lower template (3) is provided with an upper template (19), the lower end surface of the upper template (19) is embedded with an upper mold core (18), the upper end surface of the upper template (19) is fixed with an upper fixing plate (20), a cavity for forming the product (11) is enclosed between the upper mold core (18) and the lower mold core (4), and a guide seat (13) is also provided at the upper end of the lower mold core (4). A sliding block (12) is provided inside the seat (13), one end of the sliding block (12) extends into the cavity and forms an inner cavity for snap-fit ​​molding with the bottom surface of the cavity, a top plate with a movable connection is provided between the two square irons (2), a top rod (7) is vertically fixed to the upper end of the top plate, the top rod (7) passes through the lower mold plate (3) and the lower mold core (4) to the bottom surface of the cavity, and a sliding component is provided at the lower end of the lower mold core (4), when the upper mold core (18) is separated from the lower mold core (4), the sliding component drives the sliding block (12) to slide in a direction away from the inner cavity, and when the upper mold core (18) and the lower mold core (4) are aggregated, the sliding component drives the sliding block (12) to slide in a direction close to the inner cavity; The sliding assembly includes an inclined guide column (21) fixed to the lower end of the upper mold core (18), an inclined hole (17) is provided on the slider (12), and the inclined guide column (21) is passed through the inclined hole (17). The inclined guide column (21) and the inclined hole (17) are both inclinedly arranged, and the end of the inclined guide column (21) and the inclined hole (17) closer to the inner cavity is the higher end; A guide column (22) is vertically fixed between the lower template (3) and the lower fixed plate (1), and the top plate is passed through the guide column (22) and is slidably connected to the guide column (22); The bottom surface of the guide seat (13) is provided with a through hole (15), and the bottom surface of the slider (12) is provided with a safety hole (16). When the inclined guide column (21) is pulled out of the inclined hole (17), the slider (12) slides to the end of the guide seat (13) away from the inner cavity and the safety hole (16) is aligned with the inclined hole (17). The interior of the lower template (3) is vertically provided with a slidingly connected anti-collision rod (8), and the top of the anti-collision rod (8) passes through the lower mold core (4) and is inserted into the through hole (15); The top plate comprises an upper top plate (5) and a lower top plate (6) located at its lower end, the bottom of the top rod (7) is fixed to the upper end surface of the upper top plate (5), the upper end surface of the lower fixed plate (1) is embedded with a pressure plate (9), the upper end of the pressure plate (9) is fixed with a spring (10), the bottom of the anti-collision rod (8) passes through the upper top plate (5) and the lower top plate (6) and is fixedly connected to the spring (10), the lower end surface of the lower top plate (6) is provided with a card slot (14), the bottom of the anti-collision rod (8) is passed through the card slot (14), the anti-collision rod (8) comprises a first rod portion, a second rod portion and a third rod portion arranged from top to bottom, the diameters of the first rod portion, the second rod portion and the third rod portion increase successively, the card slot (14) is a groove matched with the third rod portion, and the upper end surface of the second rod portion is abutted against the lower end surface of the lower template (3).

Images