Diving port hook needle capable of being automatically taken out and application method
By designing an automatically removable gate hook, and utilizing the cooperation of elastic posts and positioning posts, the problem of automatically removing the gate hook during demolding is solved, achieving reliable removal of the gate and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN EVA MOULD MFG CO LTD
- Filing Date
- 2024-03-20
- Publication Date
- 2026-07-21
AI Technical Summary
Existing sprue hooks are difficult to remove automatically during demolding, especially during resetting, they are prone to separation from the plastic inside the sprue, leading to sprue flying problems.
Design an automated sluice gate hook, which includes an upper support rod, a lower support rod, a sleeve, a connecting post, a spring post, a positioning post, and a return spring. The delayed ejection and clamping are achieved through the elastic deformation of the spring post and the angle change of the positioning post. Combined with the return mechanism, the reliable removal of the sluice gate is ensured.
It enables automated removal of sprues, avoids the phenomenon of sprues flying off, reduces the need for manual or robotic arm operation, and improves production efficiency and safety.
Smart Images
Figure CN118082129B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of injection mold technology, and more specifically, to an automatically removable diving hook and its application method. Background Technology
[0002] Plastic products are relevant to all aspects of people's lives, and their main processing method is injection molding. In some injection molds, submersible gate hooks are required. The working principle of this component is as follows: during injection, the plastic fluid enters the cavity through the gate, and the plastic inside the gate wraps around the hook. During demolding, the gate is cut off and the plastic inside the gate is pushed out from the outside of the mold by the hook, so as to avoid affecting the mold opening. In the existing design, in order to avoid the gate flying away during ejection, some structures are often designed to increase the contact area, such as trapezoids, multiple trapezoids, hooks, etc. However, such special shape design makes it difficult for the hook to detach from the plastic inside the gate when resetting. There is a need for a submersible gate hook that can be automatically removed and an application method that can solve this problem. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide an automatically removable diving hook and its application method, addressing the above-mentioned deficiencies of the prior art.
[0004] The technical solution adopted by this invention to solve its technical problem is:
[0005] An automatically removable diving hook is constructed, comprising a hook bar, which includes an upper support and a lower support. The lower end of the upper support has a sleeve with the same external dimensions as the lower support. The upper end of the lower support has a connecting post extending into the sleeve, the connecting post being slidably disposed within the sleeve. A spring-loaded post providing a restoring force to the connecting post is disposed within the sleeve, the spring-loaded post connecting the sleeve and the connecting post. A first positioning post and a second positioning post are arranged laterally side-by-side on the upper end face of the upper support, with a gap between them. The first positioning post and the upper support... The system is fixedly connected, with the second positioning post rotatably connected to the upper support rod. The tail end of the second positioning post is provided with an extension rod extending into the sleeve. The upper support rod has a movable hole for the extension rod to pass through. The middle part of the extension rod is rotatably connected to the inner wall of the movable hole. The sleeve also contains a return spring for resetting the extension rod. When the connecting post is fully inserted into the sleeve, the elastic post presses against the extension rod and triggers the second positioning post to deflect towards the first positioning post. There is a movable gap between the tail end of the second positioning post and the upper end of the upper support rod. An elastic rubber ring is fitted onto the extension rod at the movable gap.
[0006] The automatically removable diving hook of the present invention includes a longitudinal groove on the inner wall of the sleeve, a slider slidably mounted on the groove, and the groove communicating with the outer surface of the sleeve; the connecting post and the slider are connected by a pin.
[0007] The automatically removable diving hook of the present invention includes a pin hole on the connecting post that engages with and locks with the pin.
[0008] The automatically removable diving hook of the present invention has an opening at the upper end of the connecting post for the elastic post to extend into; the elastic post has a positioning hole for the pin to be inserted and positioned.
[0009] The automatically removable diving hook of the present invention includes an elastic column comprising a connected elastic segment and a non-elastic segment, wherein the positioning hole is disposed on the non-elastic segment.
[0010] The automatically removable diving hook of the present invention includes a C-shaped guide protrusion inside the sleeve that guides the elastic column toward the deformation of the extension rod, and the extension rod is located at the C-shaped opening of the guide protrusion.
[0011] The automatically removable diving hook of the present invention, wherein both the first positioning post and the second positioning post are conical.
[0012] An application method for an automatically removable diving port hook, applied to the aforementioned automatically removable diving port hook, is implemented as follows:
[0013] During injection molding, the connecting post is not fully inserted into the sleeve. At this time, the first positioning post and the second positioning post are in a horizontal side-by-side position.
[0014] When the mold opens, the lower support rod moves upward, the connecting column moves into the sleeve, and the elastic column is deformed by the extrusion. The elastic column eventually extrudes the extension rod, achieving delayed ejection.
[0015] The second positioning post is deflected toward the first positioning post by the force of the elastic post, and the first and second positioning posts clamp the plastic inside the sprue.
[0016] Then the lower support rod pushes the upper support rod upward to perform the top water inlet operation;
[0017] After the ejection is completed, the lower support rod retracts downwards, the connecting column releases its pressure on the extension rod, the return spring recovers its deformation, and the second positioning column returns to its original position.
[0018] The lower support rod continues to descend, pulling the sleeve downwards via the elastic column, which in turn drives the upper support rod to descend and reset.
[0019] The beneficial effects of this invention are as follows: During injection molding, the connecting post is not fully inserted into the sleeve; at this time, the first and second positioning posts are in a horizontally parallel position. During mold opening, the lower support rod moves upward, the connecting post moves into the sleeve, and the elastic post deforms, eventually pressing the extension rod to achieve delayed ejection. The second positioning post is deflected towards the first positioning post by the force of the elastic post, and the first and second positioning posts clamp the plastic inside the sprue. Then, the lower support rod pushes the upper support rod upward to perform the sprue ejection operation. After ejection, the lower support rod retracts downward, connecting... The column releases its pressure on the extension rod, the return spring recovers its deformation, and the second positioning column returns to its original position. The lower support rod continues to move downward, pulling the sleeve downward through the elastic column, which in turn drives the upper support rod to move downward and return to its original position. By applying the improved mold structure of this application, the elastic deformation of the elastic column not only provides an adjustable delayed ejection stroke, but also changes the angle of the first and second positioning columns during ejection to form a clamping effect, which can effectively prevent the sprue from flying out. After the sprue is ejected, the clamping effect is canceled, and the sprue can be removed manually or by a robot with a small force. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:
[0021] Figure 1 This is a cross-sectional view of a diving hook structure that can be automatically removed according to a preferred embodiment of the present invention. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.
[0023] The preferred embodiment of the present invention includes an automatically removable diving hook, such as... Figure 1As shown, the device includes a needle bar, which comprises an upper support rod 1 and a lower support rod 2. The lower end of the upper support rod 1 is provided with a sleeve 3 having the same external dimensions as the lower support rod 2. The upper end of the lower support rod 2 is provided with a connecting post 4 extending into the sleeve 3. The connecting post 4 is slidably disposed within the sleeve 3. A spring post 5, providing a restoring force to the connecting post 4, is disposed within the sleeve 3. The spring post 5 connects the sleeve 3 and the connecting post 4. A first positioning post 6 and a second positioning post 7 are arranged horizontally side-by-side on the upper end face of the upper support rod 1, with a gap between them. The first positioning post 6 is fixedly connected to the upper support rod 1, and the second positioning post 7 is rotatably connected to the upper support rod 1. An extension rod 8 is provided at the tail end and extends into the sleeve 3. An movable hole 11 is provided in the upper support rod 1 for the extension rod 8 to pass through. The middle part of the extension rod 8 is rotatably connected to the inner wall of the movable hole 11. A return spring 9 is also provided in the sleeve 3 to reset the extension rod 8. When the connecting post 4 is fully inserted into the sleeve 3, the elastic post 5 squeezes the extension rod 8 and triggers the second positioning post 7 to deflect toward the first positioning post 6. There is a movable gap between the tail end of the second positioning post 7 and the upper end of the upper support rod 1. An elastic rubber ring 10 is sleeved on the extension rod 8 at the movable gap. The purpose of the elastic rubber ring 10 is to prevent plastic from entering into the movable gap, and at the same time, the second positioning post 7 can deflect.
[0024] During injection molding, the connecting post 4 is not fully inserted into the sleeve 3. At this time, the first positioning post 6 and the second positioning post 7 are in a horizontally parallel position. When the mold opens, the lower support rod 2 moves upward, the connecting post 4 moves into the sleeve 3, and the elastic post 5 is deformed by the pressure. The elastic post 5 eventually presses the extension rod 8 to achieve delayed ejection. The second positioning post 7 is deflected towards the first positioning post 6 by the force of the elastic post 5. The first positioning post 6 and the second positioning post 7 clamp the plastic in the gate. Then the lower support rod 2 pushes the upper support rod 1 upward to perform the gate ejection operation. After ejection, the lower support rod 2 retracts downward, the connecting post 4 releases the pressure on the extension rod 8, the return spring 9 returns to its deformation, and the second positioning post 7 returns to its original position. The lower support rod 2 continues to move downward, pulling the sleeve 3 downward through the elastic post 5, which in turn drives the upper support rod 1 to move downward and return to its original position.
[0025] By applying the improved mold structure of this application, the elastic deformation of the elastic column 5 not only has an adjustable delayed ejection stroke, but also changes the angle of the first positioning column 6 and the second positioning column 7 during ejection to form a clamping effect, which can effectively avoid the appearance of sprue. After the sprue is ejected, the clamping effect is canceled, and the sprue can be removed manually or by a robot with a small force.
[0026] Preferably, the inner wall of the sleeve 3 is provided with a longitudinal groove 30, and a slider 31 is longitudinally slidably arranged on the groove 30. The groove 30 is in communication with the outer surface of the sleeve 3. The connecting post 4 is connected to the slider 31 by a pin 32. The connecting post 4 is provided with a pin hole 40 that cooperates with the pin 32 for locking. The upper end of the connecting post 4 is provided with an opening 41 for the elastic post 5 to extend into. The elastic post 5 is provided with a positioning hole 50 for the pin 32 to be inserted and positioned. The elastic post 5 includes an elastic section 500 and a non-elastic section 501 connected together. The positioning hole 50 is provided on the non-elastic section 501. This structural design makes assembly convenient.
[0027] Preferably, the sleeve 3 is provided with a C-shaped guide protrusion 33 that guides the elastic column 5 to deform toward the extension rod 8, and the extension rod 8 is located at the C-shaped opening of the guide protrusion 33; this design makes it easy to ensure the deformation direction of the elastic column 5 and ensure that the extension rod 8 can be reliably triggered.
[0028] Preferably, both the first positioning post 6 and the second positioning post 7 are conical in shape. The purpose of this structural layout is to reduce the resistance encountered when removing water from the inlet.
[0029] An application method for an automatically removable diving port hook, applied to the aforementioned automatically removable diving port hook, is implemented as follows:
[0030] During injection molding, the connecting post is not fully inserted into the sleeve. At this time, the first positioning post and the second positioning post are in a horizontal side-by-side position.
[0031] When the mold opens, the lower support rod moves upward, the connecting column moves into the sleeve, and the elastic column is deformed by the extrusion. The elastic column eventually extrudes the extension rod, achieving delayed ejection.
[0032] The second positioning post is deflected toward the first positioning post by the force of the elastic post, and the first and second positioning posts clamp the plastic inside the sprue.
[0033] Then the lower support rod pushes the upper support rod upward to perform the top water inlet operation;
[0034] After the ejection is completed, the lower support rod retracts downwards, the connecting column releases its pressure on the extension rod, the return spring recovers its deformation, and the second positioning column returns to its original position.
[0035] The lower support rod continues to descend, pulling the sleeve downwards via the elastic column, which in turn drives the upper support rod to descend and reset.
[0036] By applying the improved method of this application, the elastic deformation of the elastic column not only provides an adjustable delayed ejection stroke, but also changes the angle of the first and second positioning columns during ejection to form a clamping effect, which can effectively prevent the sprue from flying out. After the sprue is ejected, the clamping effect is canceled, and the sprue can be removed manually or by a robot with a small force.
[0037] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A diving hook that can be automatically retrieved, characterized in that, The device includes a needle bar, which comprises an upper support rod and a lower support rod. The lower end of the upper support rod has a sleeve with the same external dimensions as the lower support rod. The upper end of the lower support rod has a connecting post extending into the sleeve. The connecting post is slidably disposed within the sleeve. A spring-loaded post providing a restoring force to the connecting post is disposed within the sleeve, and the spring-loaded post connects the sleeve and the connecting post. A first positioning post and a second positioning post are arranged laterally side-by-side on the upper end face of the upper support rod, with a gap between them. The first positioning post is fixedly connected to the upper support rod, and the second positioning post is rotatably connected to the upper support rod. The tail end of the second positioning post has an extension extending into the sleeve. The rod has an upper support rod with a movable hole for the extension rod to pass through, and the middle part of the extension rod is rotatably connected to the inner wall of the movable hole. A return spring is also provided inside the sleeve to reset the extension rod. When the connecting post is fully inserted into the sleeve, the elastic post presses against the extension rod and triggers the second positioning post to deflect towards the first positioning post. There is a movable gap between the tail end of the second positioning post and the upper end of the upper support rod, and an elastic rubber ring is sleeved on the extension rod at the movable gap. The elastic post includes connected elastic and non-elastic sections. A C-shaped guide protrusion is provided inside the sleeve to guide the elastic post toward the deformation of the extension rod, and the extension rod is located at the C-shaped opening of the guide protrusion.
2. The automatically removable diving hook according to claim 1, characterized in that, The inner wall of the sleeve is provided with a longitudinal sliding groove, and a slider is slidably disposed on the sliding groove. The sliding groove is in communication with the outer surface of the sleeve. The connecting column and the slider are connected by a pin.
3. The automatically removable diving hook according to claim 2, characterized in that, The connecting post is provided with a pin hole that engages with the pin for locking.
4. The automatically removable diving hook according to claim 3, characterized in that, The upper end of the connecting column has an opening for the elastic column to extend into; the elastic column has a positioning hole for the pin to be inserted and positioned.
5. The automatically removable diving hook according to claim 4, characterized in that, The positioning hole is provided on the non-elastic section.
6. The automatically removable diving hook according to claim 1, characterized in that, Both the first positioning post and the second positioning post are conical in shape.
7. A method for applying an automatically removable diving hook, applicable to the automatically removable diving hook as described in any one of claims 1-6, characterized in that, The implementation method is as follows: During injection molding, the connecting post is not fully inserted into the sleeve. At this time, the first positioning post and the second positioning post are in a horizontal side-by-side position. When the mold opens, the lower support rod moves upward, the connecting column moves into the sleeve, and the elastic column is deformed by the extrusion. The elastic column eventually extrudes the extension rod, achieving delayed ejection. The second positioning post is deflected toward the first positioning post by the force of the elastic post, and the first and second positioning posts clamp the plastic inside the sprue. Then the lower support rod pushes the upper support rod upward to perform the top water inlet operation; After the ejection is completed, the lower support rod retracts downwards, the connecting column releases its pressure on the extension rod, the return spring recovers its deformation, and the second positioning column returns to its original position. The lower support rod continues to descend, pulling the sleeve downwards via the elastic column, which in turn drives the upper support rod to descend and reset.