Twisted tooth retreating mechanism with long core

Abstract

The utility model relates to the technical field of twisted tooth retreating mechanisms, and discloses a twisted tooth retreating mechanism with a long core, which comprises a template seat, a template sleeve is fixedly connected to the left side of the template seat, a twisted tooth driving mechanism is arranged in the template seat, and a locking mechanism is arranged on the inner side of the template seat. In the mold closing process of the mold, the twisted tooth drives the long core to move, the long core rotates to a preset position and prepares to receive an injection molding material, the injection molding material is injected into a mold cavity and surrounds the long core to form a threaded part of a product, and during mold opening, due to the fact that the long core is in spiral connection with the twisted tooth, and the twisted tooth sleeve is separated from the long core, the long core can be prevented from being damaged. And in the driving process, the first gear drives the twisted teeth to rotate, and the long core is driven to move backwards in the twisted tooth rotating process, so that the twisted teeth are prevented from being damaged in the demolding process, the service life of the twisted teeth is prolonged, and the influence on the overall operation of the mold is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of a die thread retracting mechanism, in particular to a die thread retracting mechanism with a long core. Background Technique

[0002] The die thread retracting mechanism with a long core is mainly used to realize the molding and core pulling of hollow threaded plastic parts. The injection molding machine contacts the molten plastic material through components such as the die thread. After cooling and solidification, a molded product is obtained. At this time, the long core (usually connected to components such as the die thread) in the die thread retracting mechanism, as part of the mold, participates in the molding process of the plastic part. After molding is completed, the die thread retracting mechanism drives the long core to retract through transmission components such as gears, realizing the separation of the plastic part from the mold, that is, core pulling.

[0003] In the existing technology, this mechanism is usually driven by a driving motor to drive the driving component to rotate, so that the die thread is driven to move to a specified position and then stop. And during the injection molding process, a threaded part is formed around the long core to complete the injection molding work. However, in the actual use process, since the driving motor drives the die thread and the long core as a whole, when the long core and the die thread sleeve move synchronously, when the overall force is large and the surface of the die thread is subjected to huge pressure, the outside of the die thread will appear problems such as broken teeth, which will affect the overall operation of the device. Therefore, it is necessary to improve a die thread retracting mechanism with a long core. Content of the Utility Model

[0004] The purpose of the utility model is to provide a die thread retracting mechanism with a long core to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A die thread retracting mechanism with a long core, including a template base, a template sleeve is fixedly connected to the left side of the template base, a die thread driving mechanism is arranged inside the template base, and a locking mechanism is arranged inside the template base;

[0006] The locking mechanism is arranged on the top of the die thread driving mechanism, and the die thread driving mechanism is arranged inside the template sleeve, which is convenient for the long core to rotate to a predetermined position under the drive of the die thread mechanism during the mold closing process of the mold to prepare to receive the injection molding material. After the injection molding material is injected into the mold cavity, a threaded part of the product is formed around the long core.

[0007] Preferably, the screw drive mechanism includes a drive motor fixedly connected to the right side of the template base. The output end of the drive motor is fixedly connected with a connecting shaft. An idler gear is fixedly connected to the outside of the connecting shaft. A second gear meshes with the top of the idler gear. A dental sleeve is arranged inside the second gear. A long core is spirally connected inside the dental sleeve. A bearing is arranged outside the second gear. After the injection molding is completed, the mold is opened. At this time, the screw mechanism is started again to drive the long core to rotate in the reverse direction, so that it is separated from the threaded part of the product, and then the long core can smoothly exit from the product.

[0008] Preferably, a groove is provided at the corresponding position of the bearing and the template sleeve, and the outer end face of the bearing is fixedly connected in the groove, which is convenient for driving the second gear to rotate stably and reducing the friction force.

[0009] Preferably, a hole is provided at the corresponding position of the connecting shaft and the template base, and the connecting shaft is rotatably connected in the hole, which is convenient for driving the idler gear to rotate stably.

[0010] Preferably, the locking mechanism includes an oil cylinder fixedly connected to the right side of the template base. The output end of the oil cylinder is fixedly connected with a spacer. A sliding seat is fixedly connected to the outside of the spacer. A wear-resistant plate is fixedly connected to the top of the template base. A guide rod is fixedly connected to the right side of the sliding seat. A tightening block is arranged on the top of the sliding seat. A push rod is fixedly connected to the left side of the tightening block. After the screw action is completed, the tightening block can quickly and accurately lock the position of the core to prevent it from accidentally moving due to external factors (such as vibration, impact, etc.).

[0011] Preferably, a hole is provided at the corresponding position of the guide rod and the template base, and the guide rod is slidably connected in the hole, which is convenient for guiding and further improving the stability of the mechanism.

[0012] Preferably, a groove is provided at the corresponding position of the sliding seat and the template base, and the sliding seat is slidably connected in the groove, which is convenient for driving the sliding seat to move stably.

[0013] Compared with the prior art, the present utility model provides a screw retraction mechanism with a long core, which has the following beneficial effects:

[0014] 1. The thread die retraction mechanism with a long core enables the thread die to drive the long core to move during the mold clamping process through the provided thread die driving mechanism, so that the long core rotates to a predetermined position to prepare for receiving the injection molding material. After the injection molding material is injected into the mold cavity, a threaded portion of the product is formed around the long core. During mold opening, since the long core and the thread die are connected in a spiral manner and the thread die sleeve is separated from the long core, and during the driving process, the first gear drives the thread die to rotate, and the rotation of the thread die drives the long core to move backward, ensuring that the thread die will not be damaged during the demolding process, thereby improving the service life of the thread die and preventing it from affecting the overall operation of the mold.

[0015] 2. The thread die retraction mechanism with a long core enables the brake block and the ejector rod to quickly and accurately lock the position of the core through the provided locking mechanism after the thread die operation is completed, preventing it from accidentally moving due to external factors (such as vibration, impact, etc.). During the thread die or retraction process, the ejector rod is responsible for transmitting the power generated by the oil cylinder or the force applied externally to the core or other components that need to move, so as to drive them to move along a predetermined trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0017] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the front sectional structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the external structure of the thread die driving mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the external structure of the locking mechanism of the present invention.

[0022] In the figure: 1. Template base; 2. Template sleeve; 3. Thread die driving mechanism; 4. Locking mechanism; 31. Driving motor; 32. Connecting shaft; 33. First gear; 34. Second gear; 35. Bearing; 36. Thread die sleeve; 37. Long core; 41. Oil cylinder; 42. Spacer; 43. Slide base; 44. Wear-resistant plate; 45. Guide rod; 46. Brake block; 47. Ejector rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Embodiment 1:

[0026] Please refer to Figures 1-5 , the present utility model provides a technical solution: a die thread retraction mechanism with a long core, including a template base 1, a template sleeve 2 fixedly connected to the left side of the template base 1, a thread driving mechanism 3 arranged inside the template base 1, and a locking mechanism 4 arranged inside the template base 1;

[0027] The locking mechanism 4 is arranged on the top of the thread driving mechanism 3, and the thread driving mechanism 3 is arranged inside the template sleeve 2, which is convenient for the long core 37 to rotate to a predetermined position under the drive of the thread mechanism during the mold closing process, preparing to receive the injection molding material. After the injection molding material is injected into the mold cavity, a threaded portion of the product is formed around the long core 37.

[0028] Furthermore, the thread driving mechanism 3 includes a driving motor 31 fixedly connected to the right side of the template base 1. The output end of the driving motor 31 is fixedly connected with a connecting shaft 32. An idler gear 33 is fixedly connected to the outside of the connecting shaft 32. A second gear 34 is engaged with the top of the idler gear 33. A tooth sleeve 36 is arranged inside the second gear 34. A long core 37 is spirally connected to the inside of the tooth sleeve 36. A bearing 35 is arranged outside the second gear 34, which is convenient for the mold to open after the injection molding is completed. At this time, the thread mechanism is started again to drive the long core 37 to rotate in the reverse direction, so that it is separated from the threaded portion on the product, and then the long core 37 can smoothly withdraw from the product.

[0029] Furthermore, a groove is provided at the corresponding position of the bearing 35 and the template sleeve 2, and the outer end face of the bearing 35 is fixedly connected in the groove, which is convenient for driving the second gear 34 to rotate stably and reducing the friction force.

[0030] Furthermore, a hole is provided at the corresponding position of the connecting shaft 32 and the template seat 1, and the connecting shaft 32 is rotatably connected in the hole, which is convenient for driving the first gear 33 to rotate stably.

[0031] Embodiment 2:

[0032] Please refer to Figure 5 , and in combination with Embodiment 1, it is further obtained that the locking mechanism 4 includes an oil cylinder 41. The oil cylinder 41 is fixedly connected to the right side of the template seat 1. The output end of the oil cylinder 41 is fixedly connected with a spacer 42. An outer part of the spacer 42 is fixedly connected with a sliding seat 43. A wear-resistant plate 44 is fixedly connected to the top of the template seat 1. A guide rod 45 is fixedly connected to the right side of the sliding seat 43. A tightening block 46 is arranged on the top of the sliding seat 43. A push rod 47 is fixedly connected to the left side of the tightening block 46, which is convenient for quickly and accurately locking the position of the core after the threading operation is completed, and preventing it from accidentally moving due to external factors (such as vibration, impact, etc.).

[0033] Furthermore, a hole is provided at the corresponding position of the guide rod 45 and the template seat 1, and the guide rod 45 is slidably connected in the hole, which is convenient for playing a guiding role and further improving the stability of the mechanism.

[0034] Furthermore, a groove is provided at the corresponding position of the sliding seat 43 and the template seat 1, and the sliding seat 43 is slidably connected in the groove, which is convenient for driving the sliding seat 43 to move stably.

[0035] In the actual operation process, when the device is in use, first, through the set screw thread driving mechanism 3, during the mold closing process, the long core 37 rotates by the driving motor 31 driving the connecting shaft 32, then the connecting shaft 32 drives the first gear 33 to rotate, then the first gear 33 drives the second gear 34 to rotate, and then the second gear 34 drives the screw thread to rotate, so that the screw thread drives the long core 37 to move, and it rotates to a predetermined position to prepare to receive the injection molding material. After the injection molding material is injected into the mold cavity, a threaded portion of the product is formed around the long core 37. And when the mold is opened, since the long core 37 and the screw thread are in a spiral connection, and the screw thread sleeve 36 is separated from the long core 37, and during the driving process, the first gear 33 drives the screw thread to rotate, and the screw thread drives the long core 37 to move backward during rotation, so that during the demolding process, it is ensured that the screw thread will not be damaged or the like, thereby improving the service life of the screw thread and avoiding affecting the overall operation of the mold. Then, through the set locking mechanism 4, when the screw thread action is completed, the braking block 46 is driven by the start of the oil cylinder 41. The oil cylinder 41 drives the spacer 42 to move, and the spacer 42 drives the sliding seat 43 to move. At the same time, the sliding seat 43 respectively pushes the braking block 46 and the ejector rod 47 arranged at the top, so that the braking block 46 and the ejector rod 47 can quickly and accurately lock the position of the core, preventing it from accidentally moving due to external factors (such as vibration, impact, etc.). And during the rotation or retraction of the screw thread, the ejector rod 47 is responsible for transmitting the power generated by the oil cylinder 41 or the force applied externally to the core or other components that need to move, so as to drive them to move along a predetermined trajectory.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A thread-retracting mechanism with a long core, comprising a template seat (1), characterized in that: A template sleeve (2) is fixedly connected to the left side of the template seat (1), a thread-cutting drive mechanism (3) is arranged inside the template seat (1), and a locking mechanism (4) is arranged inside the template seat (1); The locking mechanism (4) is arranged on the top of the thread-twisting driving mechanism (3), and the thread-twisting driving mechanism (3) is arranged on the inner side of the template sleeve (2).

2. A thread-retracting mechanism with a long core according to claim 1, characterized in that: The thread-twisting drive mechanism (3) comprises a drive motor (31), the drive motor (31) is fixedly connected to the right side of the template seat (1), the output end of the drive motor (31) is fixedly connected to a connecting shaft (32), the outside of the connecting shaft (32) is fixedly connected to a first gear (33), the top of the first gear (33) is meshed with a second gear (34), a tooth sleeve (36) is arranged inside the second gear (34), a long core (37) is spirally connected inside the tooth sleeve (36), and a bearing (35) is arranged outside the second gear (34).

3. A thread-retracting mechanism with a long core according to claim 2, characterized in that: The bearing (35) and the template sleeve (2) are provided with grooves at positions corresponding to each other, and the outer end surface of the bearing (35) is fixedly connected in the groove.

4. A thread-retracting mechanism with a long core according to claim 2, characterized in that: A hole is provided at a position corresponding to the connection shaft (32) and the template seat (1), and the connection shaft (32) is rotatably connected in the hole.

5. The thread retraction mechanism with a long core according to claim 1, characterized in that: The locking mechanism (4) comprises an oil cylinder (41), the oil cylinder (41) is fixedly connected to the right side of the template seat (1), the output end of the oil cylinder (41) is fixedly connected to a meson (42), the outside of the meson (42) is fixedly connected to a slide seat (43), the top of the template seat (1) is fixedly connected to a wear-resistant plate (44), the right side of the slide seat (43) is fixedly connected to a guide rod (45), the top of the slide seat (43) is provided with a brake block (46), and the left side of the brake block (46) is fixedly connected to a push rod (47).

6. A thread-retracting mechanism with a long core according to claim 5, characterized in that: A hole is provided at a position corresponding to the guide rod (45) and the template seat (1), and the guide rod (45) is slidably connected in the hole.

7. The thread retraction mechanism with a long core according to claim 5, characterized in that: The sliding seat (43) and the template seat (1) are provided with grooves at positions corresponding to each other, and the sliding seat (43) is slidably connected in the grooves.

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