Secondary ejection structure of bone beam arm and mold

Abstract

This disclosure provides a secondary ejection structure and mold for a bone beam arm. The secondary ejection structure includes a front mold, a rear mold, a sliding assembly, an elastic push block assembly, and an ejection assembly. A cavity, a bone beam mounting groove, and a movable groove are formed between the front and rear molds. The cavity is connected to the bone beam mounting groove. The elastic push block assembly is installed in the movable groove and has a fixed groove connected to the bone beam mounting groove. One end of the bone beam arm is installed in the fixed groove. The elastic push block assembly also has a through hole connected to the fixed groove. The rear mold has an insert that passes through the through hole, protrudes from the bottom of the fixed groove, and passes through the connection hole of the bone beam arm. The sliding assembly is installed in the movable groove and is located on the side of the bone beam arm away from the elastic push block assembly. The ejection assembly is located in the rear mold. By pushing the bone beam arm and the insert apart through the elastic push block assembly, the secondary ejection completes the overall demolding, avoiding the problem of bone beam arm damage caused by forced demolding.

Description

Technical Field

[0001] This disclosure relates to the technical field of medical mask manufacturing, and in particular to a secondary ejection structure and mold for a bone beam arm. Background Technology

[0002] The bony arm is a component in the mask structure that connects the mask body to the headband. The design of the bony arm affects the mask's wearing stability, comfort, and seal. The bony arm and mask are integrally molded together.

[0003] The bone beam arm and the face mask are connected as one piece through injection molding. During the injection molding process, the bone beam arm and the face mask are connected and formed in the molding cavity of the mold. The fixing angled holes on both sides of the bone beam arm are used to fix it to the mold. Then, it is ejected from the molding cavity by the ejection mechanism. During the ejection and demolding process, the edges of the fixing angled holes of the bone beam arm form sharp angles, which makes the bone beam arm easy to scratch.

[0004] For example, the rapid ejection mechanism for a medical isolation face mask mold disclosed in prior art CN202220057037.8 includes a worktable, an L-shaped curved plate fixedly connected to one end of the upper surface of the worktable, a hydraulic telescopic rod fixedly connected to the middle of the L-shaped curved plate, a mounting plate fixedly connected to one end of the hydraulic telescopic rod, a pushing device mounted on one side of the mounting plate, and a spring-loaded device mounted on the lower surface of the worktable. This solution cannot solve the problem that during the ejection and demolding process, the edge of the fixing oblique hole of the bone beam arm forms a sharp angle, making the bone beam arm easily scratched. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a secondary ejection structure and mold for a bone beam arm that reduces demolding damage.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A secondary ejection structure for a bone beam arm includes a front mold, a rear mold, an elastic push block assembly, a sliding assembly, and an ejection assembly. A cavity, a bone arm mounting groove, and a movable groove are formed between the front mold and the rear mold. The cavity communicates with the bone arm mounting groove. The cavity is used to form a face mask, and the bone arm mounting groove is used to fix the bone beam arm.

[0008] The elastic push block assembly is installed in the movable groove. The elastic push block assembly has a fixed groove communicating with the bone arm mounting groove. One end of the bone beam arm is installed in the fixed groove. The elastic push block assembly also has a through hole communicating with the fixed groove. The rear module is provided with an insert. The insert passes through the through hole and protrudes from the bottom of the fixed groove, and passes through the connection hole of the bone beam arm. The elastic push block assembly is used to push the bone beam arm so that the end of the insert separates from the connection hole of the bone beam arm. The sliding assembly is installed in the movable groove and located on the side of the bone beam arm opposite to the elastic push block assembly. The sliding assembly is used to press the bone beam arm into the fixed groove.

[0009] The ejector assembly is disposed within the rear mold and is used to eject the face mask formed by the cavity.

[0010] In one embodiment, the rear mold has a push block mounting groove, the elastic push block assembly includes a push block, a limiting member, and an elastic member, the through hole and the fixing groove are formed in the push block, the push block has a sliding hole, the push block is installed in the push block mounting groove, the push block has a receiving groove, the elastic member is installed in the receiving groove, the two ends of the elastic member abut against the push block and the rear mold, one end of the limiting member passes through the sliding hole and is connected to the rear mold, and the other end of the limiting member has a protrusion that abuts against the side of the push block away from the rear mold.

[0011] In one embodiment, the rear module is further provided with a guide protrusion, and the push block is provided with a guide hole, through which the guide protrusion passes.

[0012] In one embodiment, there are two bone arm mounting slots, two movable slots, two sliding components, and two elastic push block components. The two bone arm mounting slots are disposed on both sides of the cavity, and the movable slots are respectively disposed on both sides of the rear mold. Each sliding component and each elastic push block component is installed in the corresponding movable slot.

[0013] In one embodiment, the elastic pusher assembly further includes a balance block, the rear module has a limiting groove, the balance block is fixedly connected to the pusher, and a portion of the balance block is embedded in the limiting groove.

[0014] In one embodiment, the cross-section of the insert forms an arc structure.

[0015] In one embodiment, the bone arm mounting groove forms an angle with the bottom of the cavity.

[0016] In one embodiment, the row positioning component includes an abutment block and a movable block, the abutment block being connected to the movable block, and the movable groove including a first slide groove and a second slide groove, the abutment block being movably disposed in the first slide groove, and the movable block being movably disposed in the second slide groove.

[0017] In one embodiment, the abutting block has an abutting surface corresponding to the bone beam arm, and the abutting surface has an abutting protrusion corresponding to the insert.

[0018] A mold comprising the secondary ejection structure of the bone beam arm as described in any of the above embodiments.

[0019] Compared with the prior art, this disclosure has at least the following advantages:

[0020] The aforementioned secondary ejection structure for the bone beam arm uses an elastic pusher assembly to separate the bone beam arm from the insert, relieving the clamping force between the bone beam arm and the insert. Then, the ejection assembly ejects the bone beam arm a second time to complete the overall demolding. This avoids scratches, bending, and tearing caused by forced demolding of the bone beam arm, and improves the quality of the integrated injection molding of the bone beam arm and the mask. The elastic pusher assembly serves as both the ejector and the positioning carrier for the bone beam arm. The integrated design simplifies the structure and improves the reliability of the operation and production efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of a secondary ejection structure of a bone beam arm according to one embodiment;

[0023] Figure 2 for Figure 1 The diagram shows a partial exploded view of the secondary ejection structure of the skeletal beam arm.

[0024] Figure 3 for Figure 2 A partial sectional view of the secondary ejection structure of the skeletal beam arm shown;

[0025] Figure 4 for Figure 2 Another partial sectional view of the secondary ejection structure of the skeletal beam arm shown;

[0026] Figure 5 for Figure 1 Another exploded view of the secondary ejection structure of the skeletal beam arm shown;

[0027] Figure 6 for Figure 1 Another partially exploded view of the secondary ejection structure of the skeletal beam arm shown. Detailed Implementation

[0028] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0032] Please see Figures 1 to 4 As shown, it is a secondary ejection structure 10 for a bone beam arm according to an embodiment of the present disclosure, including a front mold 100, a rear mold 200, a sliding assembly 400, an elastic push block assembly 300, and an ejection assembly 500. A cavity 201, a bone arm mounting groove 202, and a movable groove 203 are formed between the front mold 100 and the rear mold 200. The cavity 201 is connected to the bone arm mounting groove 202. The cavity 201 is used to form a face mask, and the bone arm mounting groove 202 is used to fix the bone beam arm.

[0033] Furthermore, the elastic push block assembly 300 is installed in the movable groove 203. The elastic push block assembly 300 has a fixing groove 301 communicating with the bone arm mounting groove 202. One end of the bone beam arm is installed in the fixing groove 301. The elastic push block assembly 300 also has a through hole 302 communicating with the fixing groove 301. The rear module 200 is provided with an insert 210. The insert 210 passes through the through hole 302 and protrudes from the bottom of the fixing groove 301, so that the insert 210 passes through the connecting hole opened in the bone beam arm. The elastic push... The block assembly 300 is used to push the bone beam arm so that the end of the insert 210 is separated from the connection hole of the bone beam arm; the sliding assembly 400 is installed in the movable groove 203 and located on the side of the bone beam arm away from the elastic push block assembly 300. The sliding assembly 400 is used to press the bone beam arm in the fixed groove 301. The sliding assembly 400 is externally connected to a telescopic drive motor so that the sliding assembly 400 can move in the movable groove 203; the ejection assembly 500 is disposed in the rear mold 200 and is used to eject the mask formed in the cavity 201.

[0034] In this embodiment, during the injection molding process, after the face mask and the bone beam arm are integrally molded, the mold is opened. The sliding component 400 first moves away from the bone beam arm, and the sliding component 400 no longer restricts the bone beam arm. Then, the elastic push block component 300 pushes the bone beam arm forward relative to the stationary insert 210, so that the insert 210 is gradually pulled out from the connecting hole of the bone beam arm, thereby completing the first ejection separation between the bone beam arm and the mold insert 210. Subsequently, the face mask is ejected by the ejection component 500 for a second ejection, so that the face mask and the bone beam arm are completely pushed out of the cavity 201 and the bone arm mounting groove 202, realizing the final demolding of the product.

[0035] The aforementioned secondary ejection structure 10 for the bone beam arm separates the bone beam arm from the insert 210 via the elastic push block assembly 300, relieving the clamping force between the bone beam arm and the insert 210. Then, the ejection assembly 500 performs a secondary ejection to complete the overall demolding, avoiding scratches, bending, and tearing caused by forced demolding of the bone beam arm, and improving the quality of the integrated injection molding of the bone beam arm and the mask. The elastic push block assembly 300 serves as both an ejector and a positioning carrier for the bone beam arm. The integrated design simplifies the structure and improves the reliability of the operation and production efficiency.

[0036] like Figure 3 and Figure 5As shown, in one embodiment, the rear mold 200 has a push block mounting groove 204, and the elastic push block assembly 300 includes a push block 310, a limiting member 320, and an elastic member 330. The through hole 302 and the fixing groove 301 are formed in the push block 310. The push block 310 has a sliding hole 3101. The push block 310 is installed in the push block mounting groove 204. The push block 310 has a receiving groove 3102. The elastic member 330 is installed in the receiving groove 3102. The two ends of the elastic member 330 abut against the push block 310 and the rear mold 200, respectively. One end of the limiting member 320 passes through the sliding hole 3101 and is connected to the rear mold 200. The other end of the limiting member 320 forms a protrusion and abuts against the side of the push block 310 away from the rear mold 200. In this embodiment, the sliding assembly 400 retracts to release the pressure on the bone beam arm, and the compressed elastic element 330 immediately releases energy, pushing the push block 310 to move along the direction of the limiting element 320, so that the bone beam arm is disengaged from the stationary insert 210. The action is automatically reset when the mold is closed, perfectly realizing the precise operation of separating the bone beam arm from the insert 210. Through the mechanical limiting of the limiting element 320, it is ensured that the stroke of the first ejection is fixed and controllable, avoiding insufficient or excessive ejection.

[0037] like Figure 5 As shown, in one embodiment, the rear module 200 further has a guide protrusion 220, and the push block 310 has a guide hole 3103, through which the guide protrusion 220 passes. In this embodiment, the cooperation between the guide protrusion 220 and the guide hole 3103 ensures that the push block 310 and the supporting bone beam arm move in a straight line, reducing the lateral force and wear on the limiting member 320 and its sliding hole 3101.

[0038] like Figure 1 and Figure 2 As shown, in one embodiment, there are two bone arm mounting slots 202, movable slots 203, sliding components 400, and elastic push block components 300. The two bone arm mounting slots 202 are located on both sides of the cavity 201, and the movable slots 203 are respectively located on both sides of the rear mold 200. Each sliding component 400 and each elastic push block component 300 is installed in the corresponding movable slot 203. In this embodiment, the symmetrical arrangement of the bone arm mounting slots 202 and movable slots 203 on both sides, along with the sliding components 400 and elastic push block components 300, enables synchronous molding and demolding of the left and right bone arms, improving production efficiency and product consistency. Simultaneously, it ensures balanced mold force and more stable operation.

[0039] like Figure 2As shown, in one embodiment, there are multiple inserts 210, each disposed on both sides of each fixing groove 301. In this embodiment, the inserts 210 pass through the through holes 302 corresponding to the bone beam arm, and the multiple inserts 210 distributed on both sides of the fixing groove 301 significantly enhance the positioning stability of the inserts 210 for the bone beam arm.

[0040] like Figure 5 As shown, in one embodiment, the elastic pusher assembly 300 further includes a balance block 340. The rear module 200 has a limiting groove 202. The balance block 340 is fixedly connected to the pusher 310, and a portion of the balance block 340 is embedded in the limiting groove 202. In this embodiment, the balance block 340 adjusts the pressure distribution of the pusher 310, improving the sliding stability of the pusher 310 in the limiting groove 202. The balance block 340 guides the pusher 310 through the limiting groove 202, causing the pusher 310 to move linearly along a preset trajectory. Further, each elastic pusher assembly 300 has at least two balance blocks 340. The two balance blocks are spaced apart on both sides of the bottom of the pusher 310. The rear module 200 has at least two corresponding limiting grooves 202, and each pusher 310 is installed in the corresponding limiting groove 202. Understandably, by using two balance blocks 340 in conjunction with the limiting groove 202 to provide multiple fulcrums, the rigidity and stability of the push block 310 during movement are enhanced, reducing the swaying or tilting of the push block 310 caused by lateral forces.

[0041] like Figure 5 As shown, in one embodiment, the insert 210 has a circular arc cross-section. In this embodiment, the inner wall of the bone beam arm through hole 302 has a circular arc R-angle structure. By designing the insert 210 with a circular arc cross-section, it forms a matching contact surface with the inner wall of the bone beam arm through hole 302, reducing the frictional resistance during demolding and effectively avoiding scratches on the inner wall of the bone beam arm.

[0042] like Figure 2 As shown, in one embodiment, the bone arm mounting groove 202 forms an angle with the bottom of the cavity 201. In this embodiment, by setting the bone arm mounting groove 202 at an angle with the bottom of the cavity 201, the connection between the bone arm and the mask is formed in an inclined state, avoiding stress concentration at the connection, significantly enhancing the connection strength between the bone arm and the mask body, and making the product appearance transition more natural and smooth, thus improving the structural reliability and aesthetics.

[0043] like Figure 6As shown, in one embodiment, the positioning assembly 400 includes an abutment block 410 and a movable block 420. The abutment block 410 is connected to the movable block 420. The movable groove 203 includes a first sliding groove 2031 and a second sliding groove 2032. The abutment block 410 is movably disposed in the first sliding groove 2031, and the movable block 420 is movably disposed in the second sliding groove 2032. In this embodiment, the abutment block 410 is used to adapt to and hold the bone beam arm. The first sliding groove 2031 guides the abutment block 410 to slide in a limited position, and the second sliding groove 2032 guides the movable block 420 to slide in a limited position, ensuring the stability of the bone beam arm under pressure and reducing wear on the moving parts.

[0044] like Figure 6 As shown, in one embodiment, the abutment block 410 has an abutment surface 411 corresponding to the bone beam arm, and the abutment surface 411 has an abutment protrusion 412 corresponding to the insert 210. In this embodiment, the abutment block 410 and the bone beam arm form a surface contact pressing, which improves the pressing stability. The abutment protrusion 412 directly abuts against the insert 210, forming a rigid support structure when the positioning assembly 400 is pressed, realizing precise positioning and reliable pressing of the bone beam arm, thereby preventing displacement or deformation of the bone beam arm during injection molding.

[0045] This application also provides a mold, including the secondary ejection structure 10 for the bone beam arm as described in any of the above embodiments. In this embodiment, the secondary ejection structure 10 for the bone beam arm enables the mold to efficiently demold the mask with the bone beam arm, ensuring the molding quality and integrity of the bone beam arm part, and improving production efficiency and service life.

[0046] Compared with the prior art, this disclosure has at least the following advantages:

[0047] The aforementioned secondary ejection structure 10 for the bone beam arm separates the bone beam arm from the insert 210 via the elastic push block assembly 300, relieving the clamping force between the bone beam arm and the insert 210. Then, the ejection assembly 500 performs a secondary ejection to complete the overall demolding, avoiding scratches, bending, and tearing caused by forced demolding of the bone beam arm, and improving the quality of the integrated injection molding of the bone beam arm and the mask. The elastic push block assembly 300 serves as both an ejector and a positioning carrier for the bone beam arm. The integrated design simplifies the structure and improves the reliability of the operation and production efficiency.

[0048] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A secondary ejection structure for a bone beam arm, comprising a front mold, a rear mold, an elastic push block assembly, a sliding assembly, and an ejection assembly, wherein a cavity, a bone arm mounting groove, and a movable groove are formed between the front mold and the rear mold, the cavity communicating with the bone arm mounting groove, the cavity being used to form a face mask, and the bone arm mounting groove being used to fix the bone beam arm, characterized in that... The elastic push block assembly is installed in the movable groove. The elastic push block assembly has a fixed groove communicating with the bone arm mounting groove. One end of the bone beam arm is installed in the fixed groove. The elastic push block assembly also has a through hole communicating with the fixed groove. The rear module is provided with an insert. The insert passes through the through hole and protrudes from the bottom of the fixed groove, and passes through the connection hole of the bone beam arm. The elastic push block assembly is used to push the bone beam arm so that the end of the insert separates from the connection hole of the bone beam arm. The sliding assembly is installed in the movable groove and located on the side of the bone beam arm opposite to the elastic push block assembly. The sliding assembly is used to press the bone beam arm into the fixed groove. The ejector assembly is disposed within the rear mold and is used to eject the face mask formed by the cavity.

2. The secondary ejection structure of the bone beam arm according to claim 1, characterized in that, The rear mold has a push block mounting groove. The elastic push block assembly includes a push block, a limiting member, and an elastic member. The through hole and the fixing groove are formed in the push block. The push block has a sliding hole. The push block is installed in the push block mounting groove. The push block has a receiving groove. The elastic member is installed in the receiving groove. Both ends of the elastic member abut against the push block and the rear mold, respectively. One end of the limiting member passes through the sliding hole and is connected to the rear mold. The other end of the limiting member has a protrusion that abuts against the side of the push block away from the rear mold.

3. The secondary ejection structure of the bone beam arm according to claim 2, characterized in that, The rear module is further provided with a guide protrusion, and the push block is provided with a guide hole, through which the guide protrusion passes.

4. The secondary ejection structure of the bone beam arm according to claim 2, characterized in that, The number of the bone arm mounting groove, the movable groove, the sliding assembly, and the elastic push block assembly is two. The two bone arm mounting grooves are disposed on both sides of the cavity, and the movable grooves are respectively disposed on both sides of the rear mold. Each sliding assembly and each elastic push block assembly is installed in the corresponding movable groove.

5. The secondary ejection structure of the bone beam arm according to claim 2, characterized in that, The elastic pusher assembly also includes a balance block. The rear module has a limiting groove. The balance block is fixedly connected to the pusher and a portion of the balance block is embedded in the limiting groove.

6. The secondary ejection structure of the bone beam arm according to claim 1, characterized in that, The cross-section of the insert forms a circular arc structure.

7. The secondary ejection structure of the bone beam arm according to claim 1, characterized in that, The bone arm mounting groove forms an angle with the bottom of the cavity.

8. The secondary ejection structure of the bone beam arm according to claim 1, characterized in that, The positioning component includes an abutment block and a movable block. The abutment block is connected to the movable block. The movable groove includes a first sliding groove and a second sliding groove. The abutment block is movably disposed in the first sliding groove, and the movable block is movably disposed in the second sliding groove.

9. The secondary ejection structure of the bone beam arm according to claim 8, characterized in that, The abutting block has an abutting curved surface corresponding to the bone beam arm, and the abutting curved surface has an abutting protrusion corresponding to the insert.

10. A mold, characterized in that, The secondary ejection structure of the bone beam arm as described in any one of claims 1-9.

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