Swing buckling machine structure of plastic mold
Through the design of the swing clamping machine structure, the problem of difficult ejection of the front mold multi-bone position product in plastic molds is solved, and the balanced ejection of the product is achieved and the mold structure is simplified, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202510818743.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-08-12
AI Technical Summary
In plastic molds, the front mold multi-bone position products are difficult to eject, space is limited, and the production cost is high. The conventional ejection method is easy to cause problems such as sticking molds, elevating heights and lower mold maintenance, affecting production efficiency.
The swing buckle machine structure is adopted, and the ejector plate is driven to synchronously by opening the front and rear dies. The connection design of the swing block and the tie rod is used to achieve balanced ejection of the product, avoid the mold sticking phenomenon, simplify the mold structure and reduce costs.
The smooth demolding of front-mode multi-bone position products is achieved, simplifying the mold structure, reducing production complexity and cost, and improving production efficiency.
Smart Images
Figure CN120461649A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of plastic molds, and in particular to a swing latch structure of a plastic mold. Background Art
[0002] In the field of plastic molds, especially for products with multiple front mold positions, the production process often faces challenges such as difficult ejection, limited space, and high production costs. Traditional ejection methods typically use front mold ejection, but due to the complex product structure and limited space, the ejection structure design is complex, occupies a large mold space, and is costly to produce. Furthermore, conventional ejection methods are prone to problems such as mold sticking, high ejection height, and lower mold maintenance during the production process. These issues not only waste time but also seriously affect production efficiency and extend the production cycle. Summary of the Invention
[0003] The purpose of the present invention is to provide a swing latch structure for a plastic mold, which drives the ejector plate to eject together by opening the front and rear molds to achieve synchronous movement, effectively solving the mold sticking problem caused by asynchronous ejection and unbalanced force of multi-bone products in the front mold, and ensuring that the product can be demolded smoothly.
[0004] In order to achieve the above objectives, the following technical solutions are adopted: A swing latch structure for a plastic mold comprises a base plate, and plates A and B stacked on the base plate from bottom to top; a front mold core is mounted on the top of plate A, and a rear mold core for use with the front mold core is provided at the bottom of plate B corresponding to the front mold core; a first mounting groove is provided on the top of the base plate, and an ejector plate is movably arranged in the first mounting groove; an ejector pin and an ejector block are mounted on the ejector plate, and the upper parts of the ejector pin and the ejector block are movably inserted into the front mold core for arrangement; a pull rod is mounted on each of the top ends of the ejector plate, and the upper parts of the pull rods are movably inserted into plate A for arrangement; a latch assembly is mounted on each of the plates B corresponding to the two pull rods, and the lower part of the latch assembly is movably inserted into plate A and connected to the pull rods.
[0005] Furthermore, a first accommodating groove is provided on the top of the A plate, and a first plug hole is provided on the bottom of the A plate, which passes through the first accommodating groove; the upper part of the pull rod is moved through the first plug hole and inserted into the first accommodating groove; the outer wall of the pull rod located in the first accommodating groove is also provided with two first card slots, and the two first card slots are arranged opposite to each other; the lower part of the trigger assembly is connected to the pull rod through the first card slot.
[0006] Furthermore, a first mounting hole is provided at the top of the B plate corresponding to the first accommodating groove, and a pin is connected between the inner walls of the upper parts of both sides of the first mounting hole; the latch assembly includes two pendulum blocks inserted in the first mounting hole; the upper parts of the two pendulum blocks are rotatably connected to the pin, and the lower parts of the two pendulum blocks pass through the bottom opening of the first mounting hole and are inserted into the first accommodating groove; a torsion spring is also installed at the connection between the pendulum block and the pin, and the torsion spring is used to keep the two pendulum blocks in a separated state; the lower parts of the opposite sides of the two pendulum blocks are each provided with a first clamping block adapted to the first clamping slot, and the pendulum blocks are connected to the pull rod via the first clamping block and the first clamping slot.
[0007] Furthermore, the lower part of the inner wall at both ends of the first mounting hole is respectively provided with a first inclined surface inclined outward, and when the two pendulum blocks are in a separated state, the opposite sides of the two pendulum blocks are respectively in contact with a first inclined surface; the inner walls at both ends of the first accommodating groove are opened in a vertical direction, and the length of the top opening of the first accommodating groove is smaller than the length of the bottom opening of the first mounting hole.
[0008] Furthermore, the bottom of the pendulum block is further provided with a second inclined surface which is inclined downward in the direction of the first accommodating groove.
[0009] Furthermore, a second mounting groove is provided at each end of the bottom of the first mounting groove, and a spring is installed in the second mounting groove; the top of the spring abuts against the bottom of the ejector plate.
[0010] Furthermore, a plurality of third mounting grooves are provided at intervals along the length direction of the top of the ejector plate, and the ejector block is installed in the third mounting grooves; a pressure plate is installed on each side of the bottom of the ejector plate, and the ejector pin is installed on the pressure plate.
[0011] By adopting the above scheme, the beneficial effects of the present invention are: The present invention drives the ejector plate to eject together by opening the front and rear molds, achieving synchronous movement, effectively solving the mold sticking problem caused by asynchronous ejection and unbalanced force of multi-bone products in the front mold, ensuring that the product can be demolded smoothly. Compared with the traditional ejection method, it greatly simplifies the mold structure, reduces the mold space occupied, reduces the complexity and cost of mold production, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention without the base plate, A plate and B plate; Figure 4 An exploded view of the pull rod and the pendulum block of the present invention; The accompanying drawings illustrate: 1. Bottom plate; 2. Plate A; 3. Plate B; 11. First mounting slot; 12. Ejector plate; 13. Ejector; 14. Ejector block; 15. Pull rod; 16. First retaining slot; 17. Spring; 18. Press plate; 21. First accommodating slot; 31. First mounting hole; 32. Pin; 33. Pendulum block; 34. First retaining block; 35. First inclined surface; 36. Second inclined surface. DETAILED DESCRIPTION
[0013] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0014] Reference Figures 1 to 4 As shown, the present invention provides a swing latch structure of a plastic mold, comprising a base plate 1, and an A plate 2 and a B plate 3 stacked on the base plate 1 from bottom to top; a front mold core is installed on the top of the A plate 2, and a rear mold core used in conjunction with the front mold core is provided at the bottom of the B plate 3 corresponding to the front mold core. In one embodiment, a first mounting groove 11 is provided on the top of the base plate 1, and a pin plate 12 is movably arranged in the first mounting groove 11; an ejector pin 13 and an ejector block 14 are installed on the ejector plate 12, and the upper parts of the ejector pin 13 and the ejector block 14 are movably inserted into the front mold core for arrangement; a pull rod 15 is also installed at each of the two ends of the top of the ejector plate 12, and the upper part of the pull rod 15 is movably inserted into the A plate 2 for arrangement; a latch assembly is installed on the B plate 3 corresponding to the two pull rods 15, and the lower part of the latch assembly is movably inserted into the A plate 2 and connected to the pull rod 15.
[0015] Reference Figure 3 As shown, the product targeted by the present invention is a front mold multi-bone product. Since the product is very small, there is no space in the middle and the structure is complex, if a conventional front mold ejection mold structure is adopted, it is easy to cause ejection synchronization, and then it is easy to deform, eject high, and easily cause mold sticking, which wastes time and thus affects production efficiency. For this reason, a swing latch structure is designed. In this embodiment, a first accommodating groove 21 is provided on the top of the A plate 2, and a first plug hole is also provided on the bottom of the A plate 2 that passes through the first accommodating groove 21; the upper part of the pull rod 15 is movable through the first plug hole and then inserted into the first accommodating groove 21; the outer wall of the pull rod 15 located in the first accommodating groove 21 is also provided with two first card grooves 16, and the two first card grooves 16 are arranged opposite to each other; the lower part of the latch assembly is connected to the pull rod 15 via the first card groove 16.
[0016] At the same time, a first mounting hole 31 is opened at the top of the B plate 3 corresponding to the first accommodating groove 21, and a pin 32 is connected between the inner walls of the upper parts of both sides of the first mounting hole 31; the trigger assembly includes two pendulum blocks 33 inserted into the first mounting hole 31; the upper parts of the two pendulum blocks 33 are rotatably connected to the pin 32, and the lower parts of the two pendulum blocks 33 pass through the bottom opening of the first mounting hole 31 and are inserted into the first accommodating groove 21; a torsion spring is also installed at the connection between the pendulum block 33 and the pin 32, which is used to keep the two pendulum blocks 33 in a separated state ; The lower part of the opposite side of the two pendulum blocks 33 is also provided with a first clamping block 34 adapted to the first clamping slot 16, and the pendulum block 33 is connected to the pull rod 15 via the first clamping block 34 and the first clamping slot 16; the lower part of the inner wall at both ends of the first mounting hole 31 is respectively provided with a first inclined surface 35 inclined outward. When the two pendulum blocks 33 are in a separated state, the opposite sides of the two pendulum blocks 33 are respectively fitted with a first inclined surface 35; the inner walls at both ends of the first accommodating groove 21 are opened in the vertical direction, and the length of the top opening of the first accommodating groove 21 is smaller than the length of the bottom opening of the first mounting hole 31.
[0017] When the A / A plate 2 is molded, since the pendulum block 33 is connected to the pull rod 15 via the first clamping block 34 and the first clamping slot 16, when the pendulum block 33 moves with the B plate 3, it will drive the pull rod 15 to move synchronously. The pull rod 15 is installed on the ejector plate 12, so it can drive the ejector plate 12 to move synchronously. The ejector plate 12 is provided with an ejector pin 13 and an ejector block 14, so the product can be ejected synchronously through the ejector pin 13 and the ejector block 14. After the pendulum block 33 moves a certain distance by pulling the ejector plate 12 through the pull rod 15, the lower part of the pendulum block 33 will be separated from the first accommodating groove 21. At this time, under the action of the torsion spring, the two pendulum blocks 33 are in a separated state, so that the first clamping block 34 on the pendulum block 33 is separated from the first clamping slot 16, and then the pendulum block 33 is separated from the pull rod 15. The A / A plate 2 continues to open the mold, and then the ejected product can be taken out. The product is subjected to balanced force. In order to meet the demoulding and structural requirements of such products, in the present invention, the pendulum block 33 is connected to the pull rod 15 through the first clamping block 34 and the first clamping slot 16. There is no dummy at the buckle machine, which can ensure that the buckle machine opens the mold synchronously, and there will be no delayed buckle machine action and product sticking to the mold. If the buckle machine is not used and the connection is hard, the product may stick to the mold and damage the product if the adhesion force is too large. When the A / A plate 2 is molded, since the length of the top opening of the first accommodating groove 21 is smaller than the length of the bottom opening of the first mounting hole 31, the lower part of the pendulum block 33 will be subjected to the extrusion force from the inner wall of the first accommodating groove 21 during the process of being inserted into the first accommodating groove 21, thereby closing the two pendulum blocks 33 and inserting the first clamping block 34 into the first clamping slot 16. Subsequently, the ejector plate 12 is driven to reset through the pull rod 15, and the mold closing is completed.
[0018] Preferably, to ensure smooth closing of the two pendulum blocks 33 when they enter the first accommodating groove 21, in one embodiment, the bottom of the pendulum block 33 is further provided with a second inclined surface 36 extending downwardly and slantingly toward the first accommodating groove 21. Furthermore, a second mounting groove is defined at each end of the bottom of the first mounting groove 11, and a spring 17 is mounted in each of the second mounting grooves. The top of the spring 17 abuts the bottom of the ejector plate 12, and the spring 17 is always in a compressed state. After the mold is opened, the spring 17 can support the ejector plate 12 and prevent it from rebounding. Furthermore, the top of the ejector plate 12 is provided with a plurality of third mounting grooves spaced along its length, into which the ejector blocks 14 are mounted. A pressure plate 18 is mounted on each side of the bottom of the ejector plate 12, and the ejector pins 13 are mounted on the pressure plates 18. There are three ejector blocks 14, allowing for simultaneous ejection of three products of different specifications, resulting in high production efficiency. Furthermore, the ejector pins 13 are distributed on both sides of the bottom of the mold core, ensuring uniform force application and facilitating smooth product ejection.
[0019] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A swing lock mechanism for a plastic mold, comprising a base plate, and plates A and B stacked on the base plate from bottom to top; a front mold core is mounted on the top of plate A, and a rear mold core is mounted on the bottom of plate B at a position corresponding to the front mold core, which cooperates with the front mold core. A first mounting groove is provided on the top of the base plate, and a pin plate is movably arranged in the first mounting groove; an ejector pin and an ejector block are installed on the ejector plate, and the upper parts of the ejector pin and the ejector block are movably inserted into the front mold core; a pull rod is installed at each end of the top of the ejector plate, and the upper part of the pull rod is movably inserted into the A plate; a latch assembly is installed on the B plate at positions corresponding to the two pull rods, and the lower part of the latch assembly is movably inserted into the A plate and connected to the pull rod.
2. The swing lock mechanism of the plastic mold according to claim 1, characterized in that: A first receiving groove is provided on the top of the A plate, and a first insertion hole is provided on the bottom of the A plate and passes through the first receiving groove; the upper part of the pull rod moves through the first insertion hole and is inserted into the first receiving groove; the outer wall of the pull rod located in the first receiving groove also has two first card slots, and the two first card slots are arranged opposite to each other; the lower part of the trigger assembly is connected to the pull rod via the first card slot.
3. The swing lock mechanism of the plastic mold according to claim 2, characterized in that: A first mounting hole is provided at the top of the B plate corresponding to the first accommodating groove, and the inner walls of the upper parts of both sides of the first mounting hole are connected with a pin; the latch assembly includes two pendulum blocks inserted in the first mounting hole; the upper parts of the two pendulum blocks are rotatably connected to the pin, and the lower parts of the two pendulum blocks pass through the bottom opening of the first mounting hole and are inserted into the first accommodating groove; a torsion spring is also installed at the connection between the pendulum block and the pin, and the torsion spring is used to keep the two pendulum blocks in a separated state; the lower parts of the opposite sides of the two pendulum blocks are each provided with a first clamping block adapted to the first clamping slot, and the pendulum blocks are connected to the pull rod via the first clamping block and the first clamping slot.
4. The swing lock mechanism for a plastic mold according to claim 3, characterized in that: The lower part of the inner wall at both ends of the first mounting hole is respectively provided with a first inclined surface inclined outward. When the two pendulum blocks are in a separated state, the opposite sides of the two pendulum blocks are respectively in contact with a first inclined surface; the inner walls at both ends of the first accommodating groove are opened in a vertical direction, and the length of the top opening of the first accommodating groove is smaller than the length of the bottom opening of the first mounting hole.
5. The swing lock mechanism for a plastic mold according to claim 3, characterized in that: The bottom of the pendulum block is further provided with a second inclined surface which is inclined downward in the direction of the first accommodating groove.
6. The swing lock mechanism for a plastic mold according to claim 1, characterized in that: A second mounting groove is provided at each of the two ends of the bottom of the first mounting groove, and a spring is installed in the second mounting groove; the top of the spring abuts against the bottom of the ejector plate.
7. The swing lock mechanism for a plastic mold according to claim 1, characterized in that: The top of the ejector plate is provided with a plurality of third mounting grooves spaced apart along its length direction, and the ejector block is installed in the third mounting grooves; a pressing plate is installed on each side of the bottom of the ejector plate, and the ejector pin is installed on the pressing plate.