Ejection device and ejection system
By designing the switch circuit and the ejection device in the injection mold ejection mechanism, the multiple ejection actions and the retention between the ejection actions is achieved, and the problems of complex design of the ejection mechanism and increasing the specific accumulation cost in the prior art are solved, simplifying the structure and reducing the design difficulty.
Patent Information
- Application Number
- CN202421823881.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing injection mold ejection mechanism is difficult to achieve multiple ejection actions, and the mechanism ejection is complex after the holding time is required, resulting in increased mold specific accumulation and cost.
By designing an ejection device including a switching circuit and an ejection mechanism, the switching circuit outputs the ejection signal multiple times within a preset time according to the ejection control signal, and controls the ejection rod to move in the direction of the ejection assembly, so as to realize the stay between multiple ejection actions and actions.
The structure of the ejection mechanism is simplified, its volume is reduced, the difficulty of design and model modification is reduced, and multiple ejection actions are automated.
Smart Images
Figure CN223013800U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection molds, and particularly to an ejection device and an ejection system. Background Art
[0002] Generally, when removing a product from a mold, whether using a single or multi-component ejection mechanism, the ejection action is completed in one go. However, for products with special shapes or special requirements for appearance, if the product cannot meet the set requirements after one ejection, manual assistance is needed, and thus the mold cannot better achieve automation. Or a secondary ejection mechanism is made in the mold to change the ejection system to a secondary ejection. However, there are more components for secondary ejection, and the design space of the mold is limited. Especially for a mechanism that requires the product to be ejected a certain distance and then held for a period of time before continuing to eject, it is even more complex. Therefore, it is usually necessary to increase the volume to achieve the required functions, resulting in an increase in the volume and cost of the mold. Summary of the Utility Model
[0003] To solve the problems in the prior art, this application provides an ejection device and an ejection system to achieve multiple ejections of the ejection mechanism.
[0004] An ejection device includes:
[0005] A switch circuit, the input end of the switch circuit is used to receive an ejection control signal and conduct multiple times within a preset time based on the control of the ejection control signal;
[0006] An ejection mechanism, including an ejector rod and an ejection component, the ejector rod is perpendicular to the ejection component; the ejection mechanism is electrically connected to the output end of the switch circuit; the switch circuit is used to output an ejection signal in the conducting state to control the ejector rod to move towards the ejection component.
[0007] In one embodiment, the switch circuit includes multiple switch components;
[0008] The input ends of multiple switch components are all used to receive the ejection control signal, the output ends of multiple switch components are all electrically connected to the ejection mechanism; each switch component is used to conduct within a preset time when receiving the ejection control signal.
[0009] In one embodiment, the switch circuit includes a first switch component and a second switch component;
[0010] The input end of the first switch component is used to receive the ejection control signal, the output end of the first switch component is electrically connected to the ejection mechanism; the first switch component is used to conduct after delaying a first preset duration when receiving the ejection control signal and disconnect after conducting for a second preset duration;
[0011] The input end of the second switch component is used to receive the ejection control signal, and the output end of the second switch component is electrically connected to the ejection mechanism; the second switch component is configured to conduct electricity after a third preset time delay when receiving the ejection control signal, and to disconnect after conducting for a fourth preset time; the third preset time is greater than the sum of the first preset time and the second preset time.
[0012] In one embodiment, the switch component includes a time relay.
[0013] In one embodiment, the ejection mechanism further includes a driving component;
[0014] The driving component is electrically connected to the output end of the switch circuit, and the driving component is configured to drive the ejector rod to move in the direction of the ejection component when receiving the ejection signal.
[0015] In one embodiment, the driving component includes a solenoid valve and an oil cylinder;
[0016] The solenoid valve is electrically connected to the output end of the switch circuit; the oil cylinder includes a piston and a cylinder barrel, and the piston of the oil cylinder is connected to the ejector rod; the solenoid valve is configured to drive the piston of the oil cylinder to move within the cylinder barrel when receiving the ejection signal, so as to drive the ejector rod to move in the direction of the ejection component.
[0017] In one embodiment, the switch circuit includes a control circuit and a third switch component;
[0018] The first end of the third switch component is used to access the supply voltage, the second end of the third switch component is electrically connected to the control circuit, and the third end of the third switch component is grounded;
[0019] The control circuit is configured to receive the ejection control signal and control the third switch component to conduct electricity multiple times within the preset time; the third switch component is configured to output the ejection signal when conducting electricity.
[0020] In one embodiment, the third switch component includes a relay and / or a MOS transistor.
[0021] In one embodiment, the ejection component includes an ejector pin, a first top plate, and a second top plate;
[0022] The ejector pin is fixedly arranged on the first surface of the first top plate and is perpendicular to the first surface of the first top plate. The second surface of the first top plate is adjacent to the first surface of the second top plate, and the second surface of the second top plate is used to abut against the ejector rod.
[0023] The present application also provides an ejection system, which includes a machine platform and the above-mentioned ejection device.
[0024] In the present application, the switch circuit outputs the ejection signal to the ejection mechanism multiple times within a preset time according to the ejection control signal, realizing multiple ejection actions of the ejection mechanism and the pause between multiple ejection actions, simplifying the structure of the ejection mechanism, thereby reducing the volume of the ejection mechanism and also reducing the design and mold modification difficulties. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic structural diagram of an ejection device in the prior art.
[0026] Figure 2 It is a schematic module structure diagram of the ejection device according to an embodiment of the present application.
[0027] Figure 3 It is a schematic structural diagram of the switch circuit according to an embodiment of the present application.
[0028] Figure 4 It is a schematic structural diagram of the ejection device according to an embodiment of the present application.
[0029] Figure 5 It is a schematic module diagram of the switch circuit according to another embodiment of the present application.
[0030] Figure 6 It is a schematic structural diagram of the ejection mechanism according to an embodiment of the present application.
[0031] MAIN ELEMENT SYMBOL DESCRIPTION
[0032] Ejection device 100 Switch circuit 110
[0033] Ejection mechanism 120 Switch components 111, 112, 114
[0034] Time relays KT1, KT2 Driving assembly 123
[0035] Solenoid valve 123a Oil cylinder 123b
[0036] Control circuit 113 Ejection system 10
[0037] Ejector rod 121 Ejection assembly 122
[0038] Ejector pin 122a First top plate 122b
[0039] Second top plate 122c Machine platform 200
[0040] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. SPECIFIC EMBODIMENTS
[0041] The following description will more fully describe the content of the present application with reference to the accompanying drawings. The exemplary embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. Like reference numerals represent the same or similar components.
[0042] Figure 1 It is a structural diagram of the current secondary ejection mechanism. The machine platform outputs an ejection control signal to drive the ejector rod 121 to move in the direction of the ejection plate. The ejector rod 121 cooperates with the switch to make the three ejection plates move upward simultaneously to achieve the first ejection. When the ejection plate 1 moves to the footrest limit position, the ejection plate 1 is blocked and separated from the ejection plate 2 and the ejection plate 3. The ejection plate 2 and the ejection plate 3 continue to move upward to the set stroke under the continuous action of the ejector rod 121 to achieve the secondary ejection. The first and secondary ejections are continuous actions, and it is impossible to achieve a pause action between the first and secondary ejections.
[0043] To solve the above problems, referring to Figure 2 , the present application proposes an ejection device 100, which includes a switch circuit 110 and an ejection mechanism 120. The input end of the switch circuit 110 is used to receive the ejection control signal and conduct multiple times within a preset time based on the control of the ejection control signal. The ejection mechanism 120 includes an ejector rod 121 and an ejection assembly 122, and the ejector rod 121 is perpendicular to the ejection assembly 122; the ejection mechanism 120 is electrically connected to the output end of the switch circuit 110; the switch circuit 110 is used to output an ejection signal to control the ejector rod 121 to move in the direction of the ejection assembly 122 when conducting.
[0044] In this embodiment, the ejection device 100 can be applied to injection mold production. The first surface of the ejection assembly 122 is used to contact the injection mold, and the second surface of the ejection assembly 122 is used to contact the ejector rod 121. After the mold injection is completed, the control end of the machine platform 200 outputs an ejection control signal to control the switch circuit 110 to conduct multiple times within a preset time, and outputs the ejection signal to the ejection mechanism 120 to drive the ejector rod 121 to move in the direction of the ejection assembly 122 multiple times within a preset time to achieve multiple ejection actions. The ejection assembly 122 applies pressure to the injection mold during multiple ejections to eject the injection mold.
[0045] For example, when the ejection control signal is received, the switch circuit 110 conducts for 5 seconds, outputs the ejection signal to the ejection mechanism 120, and controls the ejector rod 121 to push the ejection assembly 122 upward by a first preset distance to achieve a first ejection. After the first ejection is completed, the switch circuit 110 disconnects for 3 seconds to keep the ejection assembly 122 at the current position and avoid excessive extrusion of the injection mold. The switch circuit 110 conducts again for 2 seconds, outputs the ejection signal to the ejection mechanism 120, and controls the ejector rod 121 to push the ejection assembly 122 upward by a second preset distance to achieve a second ejection. After the second ejection is completed, the switch circuit 110 can also be set to disconnect for 3 seconds and then conduct for 2 seconds to achieve a third ejection. Similarly, more ejection actions can be achieved according to actual needs. Among them, the conduction time and the interval time can be set to other values according to actual needs and are not limited herein.
[0046] In this application, the switch circuit 110 outputs the ejection signal to the ejection mechanism 120 multiple times within a preset time according to the ejection control signal, realizing multiple ejection actions of the ejection mechanism 120 and the pause between multiple ejection actions, simplifying the structure of the ejection mechanism 120, thereby reducing the volume of the ejection mechanism 120 and also reducing the design and mold modification difficulty.
[0047] In one embodiment, the switch circuit 110 includes multiple switch components, and the multiple switch components can be conducted in sequence. For example, the input ends of the multiple switch components are all used to receive the ejection control signal, and each switch component is used to conduct within a preset time when receiving the ejection control signal, that is, the switch circuit 110 can output the ejection signal within multiple preset times.
[0048] In this embodiment, the multiple switch components can be set to conduct at different times. For example, the number of switch components is three. The three switch components can be set to conduct with a delay of 0 second, 8 seconds, and 12 seconds respectively when receiving the ejection control signal, and the conduction times are 5 seconds, 2 seconds, and 2 seconds respectively. In this way, the three switch components can be conducted at intervals in sequence, output the ejection signal to the ejection mechanism 120 three times, and achieve three ejection actions of the ejection mechanism 120.
[0049] Refer to Figure 3 and Figure 4, in one embodiment, the switch circuit 110 includes a first switch component 111 and a second switch component 112. The input end of the first switch component 111 is configured to receive the ejection control signal, and the output end of the first switch component 111 is electrically connected to the ejection mechanism 120; the first switch component 111 is configured to conduct after a first preset duration when receiving the ejection control signal, and disconnect after conducting for a second preset duration. The input end of the second switch component 112 is configured to receive the ejection control signal, and the output end of the second switch component 112 is electrically connected to the ejection mechanism 120; the second switch component 112 is configured to conduct after a third preset duration when receiving the ejection control signal, and disconnect after conducting for a fourth preset duration; the third preset duration is greater than the sum of the first preset duration and the second preset duration.
[0050] In this embodiment, the first preset duration can be set according to actual requirements to delay the output of the ejection signal. For example, it can be set to 0 second, 1 second, 2 seconds, etc. The second preset duration can be set according to the moving distance of the push rod of the ejection mechanism 120 during one ejection. The difference between the third preset duration and the sum of the first preset duration and the second preset duration is the staying duration after one ejection is completed. The fourth preset duration can be set according to the moving distance of the push rod of the mechanism during the second ejection.
[0051] In one embodiment, the switch component can be implemented by using a power-on delay type time relay. For example, the first ends of the time relay KT1 and the time relay KT2 are both connected to the ejecting control signal transmission line, the second ends of the time relay KT1 and the time relay KT2 are both connected to the neutral line, and the third ends of the time relay KT1 and the time relay KT2 are both electrically connected to the ejecting structure. When the time relays KT1 and KT2 receive the ejecting control signal, the electromagnetic coil in the time relay KT1 is energized to generate an electromagnetic force, which attracts the normally closed contacts 2 and 10, 1 and 9, forming a first loop, and transmits the ejecting control signal to the ejecting mechanism 120 to realize the first ejecting action of the ejecting rod 121. When the time relay KT1 reaches the set time, the normally closed contacts 2 and 10, 1 and 9 of the time relay KT1 are disconnected, and the ejecting rod 121 stops moving and stays at the current position. Until the time relay KT2 reaches the set time, the normally open contacts 8 and 12, 5 and 9 of the time relay KT2 are closed, forming a second loop, and transmitting the ejecting control signal to the ejecting mechanism 120 to realize the second ejecting action of the push rod. When the time relay KT2 reaches the set time, the ejecting rod 121 moves to the set distance, the ejecting control signal stops outputting, the time relay KT2 is powered off, and the contacts return to the initial disconnected state. Similarly, by increasing the number of time relays, more ejecting actions can be realized. Among them, the ejecting control signal can be a high-level signal. In other possible embodiments, the ejecting control signal can also be a low-level signal.
[0052] In one embodiment, the ejecting mechanism 120 further includes a driving component 123. The driving component 123 is electrically connected to the output end of the switch circuit 110, and the driving component 123 is configured to drive the ejecting rod 121 to move in the direction of the ejecting component 122 when receiving the ejecting signal.
[0053] In this embodiment, the driving component 123 can be implemented by using an oil cylinder 123b, a motor, etc. The driving component 123 receives the ejecting signal output by the switch circuit 110, converts the ejecting signal into mechanical motion, thereby driving the ejecting rod 121 to move and realizing the ejecting action.
[0054] In one embodiment, the driving component 123 includes a solenoid valve 123a and an oil cylinder 123b. The solenoid valve 123a is electrically connected to the output end of the switch circuit 110; the oil cylinder 123b includes a piston and a cylinder barrel, and the piston of the oil cylinder 123b is connected to the ejecting rod 121; the solenoid valve 123a is configured to drive the piston of the oil cylinder 123b to move in the cylinder barrel when receiving the ejecting signal, so as to drive the ejecting rod 121 to move in the direction of the ejecting component 122.
[0055] In this embodiment, the ejection signal is transmitted to the solenoid valve 123a. After the electromagnetic coil in the solenoid valve 123a is energized, an electromagnetic force is generated. The electromagnetic force acts on the valve core of the solenoid valve 123a, changing the position of the valve core, and further driving the piston of the oil cylinder 123b to move within the cylinder barrel, driving the ejector rod 121 to move towards the ejection assembly 122 to achieve the ejection action.
[0056] Referring to Figure 5 , in one embodiment, the switch circuit 110 includes a control circuit 113 and a third switch component 114. The first end of the third switch component 114 is used to connect to the power supply, the second end of the third switch component 114 is electrically connected to the control circuit 113, and the third end of the third switch component 114 is grounded. The control circuit 113 is configured to receive the ejection control signal and control the third switch component 114 to conduct multiple times within the preset time; the third switch component 114 is configured to output the ejection signal when conducting.
[0057] In this embodiment, the control circuit 113 can be implemented by using a chip with control functions such as a microprocessor, FPGA, etc. The control timing of the control circuit 113 can be preset so that the control circuit 113 controls the third switch component 114 to conduct / disconnect at the set time.
[0058] For example, after receiving the ejection control signal, the control circuit 113 outputs corresponding control signals to the third switch component 114 according to the timing of conducting for 5 seconds, disconnecting for 3 seconds, conducting for 2 seconds, and then disconnecting, so as to control the third switch component 114 to work according to the above-mentioned conducting / disconnecting timing, thereby controlling the third switch component 114 to transmit the supply voltage to the ejection mechanism 120 when conducting, driving the ejection mechanism 120 to complete two ejection actions. Among them, the third switch component 114 can be a relay and / or a MOS transistor. The number of the third switch components 114 can be set to one or more according to actual needs.
[0059] Referring to Figure 6 , in one embodiment, the ejection assembly 122 includes an ejector pin 122a, a first top plate 122b, and a second top plate 122c. The ejector pin 122a is disposed on the first surface of the first top plate 122b and is perpendicular to the first surface of the first top plate 122b. The second surface of the first top plate 122b is adjacent to the first surface of the second top plate 122c. The second surface of the second top plate 122c is used to abut against the ejector rod 121.
[0060] In this embodiment, the first top plate 122b is used to fix the ejector pin 122a, and the second top plate 122c is used to fix the first top plate 122b. When the ejector rod 121 is driven, it acts on the second top plate 122c, pushing the second top plate 122c, the first top plate 122b, and the ejector pin 122a to move upward together, applying pressure to the injection mold and ejecting the injection mold.
[0061] Referring to Figure 2 , the present application also discloses an ejection system 10, and the ejection system 10 includes a machine platform 200 and the above-mentioned ejection device 100. Among them, the machine platform 200 may include a control terminal for controlling mold injection and / or ejection.
[0062] The detailed structure of the ejection device 100 can be referred to the above embodiment and will not be elaborated here; it can be understood that since the above-mentioned ejection device 100 is used in the ejection system 10 of the present application, therefore, the embodiments of the ejection system 10 of the present application include all the technical solutions of all the embodiments of the above-mentioned ejection device 100, and the achieved technical effects are also exactly the same, which will not be elaborated here.
[0063] In the above text, the specific implementation manners of the present application have been described with reference to the drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific implementation manners of the present application without departing from the spirit and scope of the present application. These changes and substitutions all fall within the scope defined by the present application.
Claims
1. An ejection device, characterized in that: include: A switch circuit, wherein an input end of the switch circuit is used to receive an ejection control signal and to be turned on multiple times within a preset time based on the control of the ejection control signal; The ejection mechanism comprises an ejector rod and an ejection assembly, wherein the ejector rod is perpendicular to the ejection assembly; The ejection mechanism is electrically connected to the output end of the switch circuit; the switch circuit is used to output an ejection signal when it is turned on to control the ejector rod to move toward the ejection assembly.
2. The ejection device according to claim 1, characterized in that: The switch circuit includes a plurality of switch components; The input ends of the plurality of switch components are all used to receive the ejection control signal, and the output ends of the plurality of switch components are all electrically connected to the ejection mechanism; each of the switch components is used to be turned on within a preset time when receiving the ejection control signal.
3. The ejection device according to claim 2, characterized in that: The switch circuit comprises a first switch component and a second switch component; The input end of the first switch component is used to receive the ejection control signal, and the output end of the first switch component is electrically connected to the ejection mechanism; the first switch component is used to turn on after a first preset time delay when receiving the ejection control signal, and turn off after being turned on for a second preset time; The input end of the second switch component is used to receive the ejection control signal, and the output end of the second switch component is electrically connected to the ejection mechanism; the second switch component is used to turn on after a delay of a third preset time length when receiving the ejection control signal, and turn off after being turned on for a fourth preset time length; The third preset duration is greater than the sum of the first preset duration and the second preset duration.
4. The ejection device according to claim 2, characterized in that: The switch component includes a time relay.
5. The ejection device according to claim 3, characterized in that: The ejection mechanism also includes a drive assembly; The driving component is electrically connected to the output end of the switch circuit, and is used to drive the ejector rod to move in the direction of the ejection component when receiving the ejection signal.
6. The ejection device according to claim 5, characterized in that: The driving assembly includes a solenoid valve and a cylinder; The solenoid valve is electrically connected to the output end of the switch circuit; the oil cylinder includes a piston and a cylinder barrel, and the piston of the oil cylinder is connected to the ejector rod; the solenoid valve is used to drive the piston of the oil cylinder to move in the cylinder barrel when receiving the ejection signal, so as to drive the ejector rod to move in the direction of the ejection assembly.
7. The ejection device according to claim 1, characterized in that: The switch circuit comprises a control circuit and a third switch component; The first end of the third switch component is used to access the power supply voltage, the second end of the third switch component is electrically connected to the control circuit, and the third end of the third switch component is grounded; The control circuit is used to receive the ejection control signal and control the third switch component to be turned on multiple times within the preset time; the third switch component is used to output the ejection signal when being turned on.
8. The ejection device according to claim 7, characterized in that: The third switch component includes a relay and / or a MOS tube.
9. The ejection device according to claim 1, characterized in that: The ejection assembly includes an ejector pin, a first ejector plate, and a second ejector plate; The ejector pin is fixed on the first surface of the first top plate and is perpendicular to the first surface of the first top plate. The second surface of the first top plate is adjacent to the first surface of the second top plate. The second surface of the second top plate is used to abut against the ejector rod.
10. An ejection system, characterized in that: The ejection system comprises a machine platform and an ejection device according to any one of claims 1 to 9.