High-safety protection structure

Abstract

The utility model aims at providing a high security protection structure, it includes template and ejection subassembly, ejection subassembly includes the push rod, push core, wave bead screw and bayonet lock, the one end of push rod passes through the template and extends out from the top surface of template, push core passes through the other end of push rod, bayonet lock passes through push rod and push core in proper order along the radial direction, and the push rod and push core pass through the bayonet lock. And the ball screw is screwed in the ejector core and is propped against one side, far away from the ejector rod, of the bayonet lock. Thus, the mode that the bayonet lock is broken due to the fact that the bayonet lock exceeds the bearing force replaces the mode that the ejector rod is forcibly pushed into the mold cavity, the situation that the interior of the mold cavity is damaged by ejection of the ejector rod can be avoided, the mold can be maintained only by replacing the single bayonet lock, and the ejection mechanism is higher in safety and lower in maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming moulds, in particular to a high-safety protection structure. Background Art

[0002] A foaming mold is a tool used to manufacture foam products. These molds are commonly used to produce packaging materials, insulation materials, toys, automotive interior parts, etc. Currently, foaming molds are mainly made of metal (aluminum, steel).

[0003] After the foaming mold forms the workpiece, it relies on an ejection mechanism to eject the workpiece from the mold cavity. However, the current ejection mechanism is a rigid ejection structure, and the ejection mechanism's force will act entirely on the workpiece. If the mold fails to open successfully, and the ejection mechanism normally pushes the workpiece out, it will cause the ejection mechanism to apply force to the inside of the mold cavity, which can cause the interior of the mold cavity to be damaged by the ejection mechanism. To avoid this production risk, the present application proposes a high-safety protective structure for the workpiece ejection mechanism. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a high-safety protective structure that can improve the safety of an ejection mechanism and avoid damage to a mold cavity.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A high-security protective structure, comprising a template, further comprising:

[0007] The ejection assembly includes a ejector rod, a ejector core, a ball screw and a bayonet. One end of the ejector rod is passed through the template to extend from the top surface of the template. The ejector core is passed through the other end of the ejector rod. The bayonet is passed through the ejector rod and the ejector core in sequence along the radial direction. The ball screw is threaded into the ejector core, and the ball screw abuts against the side of the bayonet away from the ejector rod.

[0008] Optionally, an annular arc groove is provided on the outer side wall of the bayonet, and the ball screw abuts against the inner side wall of the annular arc groove.

[0009] Optionally, two annular grooves are provided on the outer side wall of the bayonet, and the two annular grooves are respectively located on both sides of the annular arc groove, so that each annular groove is aligned with the outer side wall of the top core and the inner side wall of the top rod.

[0010] Optionally, the axis of the push rod is provided with an inner sliding hole and an exhaust hole that are interconnected. The inner sliding hole is located on one end of the push rod close to the top core, and the inner sliding hole is arranged along the axis of the push rod, and the exhaust hole is arranged along the radial direction of the push rod.

[0011] Optionally, an inner screw hole and an avoidance hole are opened at the axis of the top core, the avoidance hole is located at the end of the top core away from the top rod, the inner screw hole is located at the end of the top core close to the top rod, and the ball screw is screwed into the inner screw hole.

[0012] Optionally, the ejection assembly further includes a block and a spring, wherein the block is arranged on an end of the ejector core away from the ejector rod, and the spring is sleeved on the outer side walls of the ejector core and the ejector rod, and the spring is respectively in contact with the block and the template.

[0013] Optionally, a center hole is provided at the axis of the clamping block, and a clamping groove connected to the center hole is provided on the side of the clamping block away from the push rod. A protrusion is provided at the end of the top core away from the push rod, and the protrusion is accommodated in the clamping groove so that the clamping block is clamped with the top core.

[0014] Optionally, a plurality of the protrusions are provided, and a plurality of the card slots are provided, and each of the protrusions is accommodated in each of the card slots in a one-to-one correspondence.

[0015] Optionally, the card block is further provided with a plurality of through slots connected to the center hole, and the through slots and the card slots are distributed in sequence and at intervals on the periphery of the center hole, and the angles between any adjacent through slots and the card slots are equal.

[0016] Optionally, a clamping ring is provided at one end of the ejector rod away from the ejector core, and the clamping ring is used to abut against the template.

[0017] Compared with the prior art, the present invention has at least the following advantages:

[0018] The high-security protective structure of the present invention includes a template and an ejection assembly, wherein the ejection assembly includes an ejector rod, an ejector core, a ball screw, and a bayonet. One end of the ejector rod is inserted through the template to extend from the top surface of the template, the ejector core is inserted through the other end of the ejector rod, and the bayonet is inserted through the ejector rod and the ejector core in sequence along the radial direction. The ball screw is threaded into the ejector core, and the ball screw abuts the side of the bayonet away from the ejector rod. In this way, the ejector rod is forced into the mold cavity instead of being damaged by the ejector rod by breaking due to exceeding the bearing capacity of the bayonet. The mold cavity can be prevented from being damaged by the ejector rod. The mold can be maintained by simply replacing a single bayonet pin. The ejection mechanism solution of the present application is more secure and has lower maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of a high-security protection structure according to one embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of a partial structure of a high-security protection structure is shown;

[0022] Figure 3 This is a schematic structural diagram of an ejection assembly according to one embodiment of the present invention;

[0023] Figure 4 for Figure 1 The schematic diagram of the partial cross-section structure of the high-security protection structure shown.

[0024] Figure 5 This is a structural diagram of a card block according to one embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 10. High-security protective structure; 100. Template; 200. Ejector assembly; 210. Ejector rod; 220. Ejector core; 230. Bayonet pin; 240. Ball screw; 231. Annular groove; 232. Annular groove; 211. Inner sliding hole; 212. Exhaust hole; 221. Inner screw hole; 222. Avoidance hole; 250. Block; 260. Spring; 251. Center hole; 252. Slot; 270. Bump; 253. Through groove; 280. Snap ring. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0028] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0030] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0031] like Figures 1 to 4 As shown, a high-security protective structure 10 includes a template 100 and an ejection assembly 200. The ejection assembly 200 includes a push rod 210, a push core 220, a pin 230 and a ball screw 240. One end of the push rod 210 is passed through the template 100 to extend from the top surface of the template 100. The push core 220 is passed through the other end of the push rod 210. The pin 230 is radially passed through the push rod 210 and the push core 220 in sequence. The ball screw 240 is screwed into the push core 220, and the ball screw 240 abuts against the side of the pin 230 away from the push rod 210.

[0032] It should be noted that one end of the push rod 210 passes through the template 100, and the push core 220 is slidably mounted on the other end of the push rod 210 along the axis of the push rod 210. The bayonet 230 radially passes through the push rod 210 and the push core 220, so that the push core 220 and the push rod 210 are fixed together by the bayonet 230. In this way, under the action of the bayonet 230, the push rod 210 and the push core 220 form a unified structure, and the push rod 210 and the push core 220 can be synchronously penetrated and slid relative to the template 100. Furthermore, a ball screw 240 is threadedly mounted within the push core 220, and the ball screw 240 is connected to the middle position of the bayonet 230 and is located on the side of the bayonet 230 away from the push rod 210. In this way, the top surface of the template 100 is the position of the mold cavity, that is, it is used to form the foamed workpiece. When the foamed workpiece is formed, under normal circumstances, the foaming agent applies a thrust to the top core 220. Under the action of the pin 230, the top core 220 and the ejector pin 210 move synchronously, so that the top end of the ejector pin 210 rises from the top surface of the template 100, so that the ejector pin 210 ejects the foamed workpiece. When the mold fails to open normally due to a malfunction, it means that the foamed workpiece will be retained in the mold cavity. At this time, when the ejector core 220 is forced to rise, the ejector pin 210 cannot pass through the template 100. When the force applied to the ejector core 220 is too great, the thrust of the ball screw 240 on the bayonet 230 exceeds the ultimate bearing capacity of the bayonet 230, and the bayonet 230 is pushed out and broken by the ball screw 240. The bayonet 230 loses its clamping effect on the ejector core 220 and the ejector pin 210, causing the ejector core 220 to slide relative to the ejector pin 210. In this way, the bayonet 230 exceeds the bearing capacity and breaks, instead of the ejector pin 210 being forcibly pushed into the mold cavity. This can prevent the interior of the mold cavity from being damaged by the ejector pin 210, and the mold can be maintained by replacing a single bayonet pin 230. The ejection mechanism solution of the present application is safer and has lower maintenance costs.

[0033] like Figure 3 and Figure 4 As shown, in one embodiment, an annular arc groove 231 is defined on the outer wall of the bayonet 230 , and the ball screw 240 abuts against the inner wall of the annular arc groove 231 .

[0034] It should be noted that the depth of the annular groove 231 determines the strength of the latch 230. This means that the ultimate load-bearing capacity of the latch 230 can be controlled. This ensures that the latch 230 reliably breaks when the force applied by the ball-end screw 240 reaches a predetermined value. Furthermore, it should be noted that to ensure reliable breakage of the latch 230, the latch 230 is relatively brittle.

[0035] like Figure 3 and Figure 4As shown, in one embodiment, two annular grooves 232 are further provided on the outer wall of the bayonet 230 , and the two annular grooves 232 are respectively located on both sides of the annular arc groove 231 , so that each annular groove 232 is aligned with the outer wall of the top core 220 and the inner wall of the top rod 210 .

[0036] It should be noted that to ensure reliable breaking of the bayonet pin 230 and enable the push core 220 to slide relative to the push rod 210, an annular groove 232 is formed on the outer wall of the bayonet pin 230. This ensures that the outer wall of the push core 220 and the inner wall of the push rod 210 are aligned with the annular groove 232. This ensures that when the thrust applied to the bayonet pin 230 exceeds a certain limit, both the annular groove 231 and the annular groove 232 of the bayonet pin 230 can serve as the breaking point.

[0037] like Figure 3 and Figure 4 As shown, in one embodiment, the axis of the push rod 210 is provided with an inner sliding hole 211 and an exhaust hole 212 that are interconnected. The inner sliding hole 211 is located on one end of the push rod 210 close to the top core 220, and the inner sliding hole 211 is arranged along the axis of the push rod 210, and the exhaust hole 212 is arranged along the radial direction of the push rod 210.

[0038] It should be noted that the top core 220 and the inner sliding hole 211 are adapted to fit together, allowing the top core 220 to slide stably relative to the top rod 210. The top core 220 and the top rod 210 function as a piston. When the top core 220 slides into the top rod 210, the vent hole 212 prevents air from being squeezed out of the inner sliding hole 211, thereby ensuring that the top core 220 can slide stably relative to the top rod 210.

[0039] like Figure 3 and Figure 4 As shown, in one embodiment, an inner screw hole 221 and an air avoidance hole 222 are opened at the axis of the top core 220. The air avoidance hole 222 is located at the end of the top core 220 away from the top rod 210, and the inner screw hole 221 is located at the end of the top core 220 close to the top rod 210. The ball screw 240 is screwed into the inner screw hole 221.

[0040] It should be noted that the ball-end screw 240 is threadedly installed in the inner screw hole 221. In this way, a screwdriver can adjust the position of the ball-end screw 240 relative to the top core 220 through the airtight hole 222, thereby adjusting the pressing force of the ball-end screw 240 relative to the pin 230.

[0041] like Figures 2 to 4 As shown, in one embodiment, the ejection assembly 200 further includes a block 250 and a spring 260. The block 250 is disposed on one end of the ejector core 220 away from the ejector rod 210. The spring 260 is sleeved on the outer walls of the ejector core 220 and the ejector rod 210, and the spring 260 is respectively in contact with the block 250 and the template 100.

[0042] It should be noted that while the ejector pin 210 and the ejector core 220 are in their natural state, the ejector pin 210 must maintain a tendency to slide toward the lower side of the template 100. This allows the ejector core 220 to push the ejector pin 210 toward the upper side of the template 100 to push the foamed workpiece. Therefore, to ensure that the ejector core 220 and the ejector pin 210 maintain a stable sliding motion toward the rear side of the template 100, a clamping block 250 is installed at the end of the ejector core 220 away from the ejector pin 210. A spring 260 is mounted on the ejector core 220 and the ejector pin 210, causing the spring 260 to push against the template 100 and the clamping block 250, respectively, thereby preventing the ejector core 220 and the ejector pin 210 from retreating toward the rear side of the template 100.

[0043] like Figure 3 and Figure 5 As shown, in one embodiment, a center hole 251 is provided at the axis of the block 250, and a slot 252 connected to the center hole 251 is provided on the side of the block 250 away from the push rod 210. A protrusion 270 is provided at the end of the top core 220 away from the push rod 210, and the protrusion 270 is accommodated in the slot 252 to enable the block 250 to be engaged with the top core 220.

[0044] It should be noted that in order to improve the structural strength between the clamping block 250 and the top core 220, the above-mentioned structure is provided. Specifically, a center hole 251 is provided on the clamping block 250 so that the top core 220 can pass through the center hole 251. At the same time, a clamping groove 252 is provided on the clamping block 250, and a protrusion 270 is provided on the top core 220. When the protrusion 270 is accommodated in the clamping groove 252, the clamping block 250 and the top core 220 are clamped and fixed.

[0045] like Figure 3 and Figure 5 As shown, in one embodiment, a plurality of protrusions 270 are provided, a plurality of slots 252 are provided, and each protrusion 270 is accommodated in each slot 252 in a one-to-one correspondence.

[0046] This ensures that the clamping block 250 is stably engaged with the end of the top core 220, improving the stability between the clamping block 250 and the top core 220. For example, three protrusions 270 are provided, and three engaging grooves 252 are also provided. This ensures that the clamping block 250 is stably engaged with the top core 220. In one embodiment, the protrusion 270 and the top core 220 are integrally formed.

[0047] like Figure 3 and Figure 5As shown, in one embodiment, a plurality of through slots 253 communicating with the center hole 251 are further provided on the block 250, and each through slot 253 and each locking slot 252 are distributed in sequence and spaced apart on the outer periphery of the center hole 251, and the angles between any adjacent through slots 253 and the locking slots 252 are equal.

[0048] It should be noted that the number of through slots 253 is consistent with the number of protrusions 270. In this way, after each protrusion 270 passes through each through slot 253, the clamping block 250 is rotated by a certain angle so that each protrusion 270 is aligned with each clamping slot 252. Then, under the elastic thrust of the spring 260, each protrusion 270 is stably accommodated in each clamping slot 252, so that the clamping block 250 is stably clamped and fixed to the top core 220.

[0049] like Figure 3 As shown, in one embodiment, a snap ring 280 is provided at one end of the ejector pin 210 away from the ejector core 220 , and the snap ring 280 is used to abut against the template 100 .

[0050] It should be noted that the push rod 210 and the push core 220 have a tendency to slide down toward the lower side of the template 100 under the push of the spring 260. To prevent the push rod 210 from falling off the template 100, a snap ring 280 is provided on the push rod 210 to clamp the template 100. The snap ring 280 and the push rod 210 are integrally formed.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in the present invention can be understood to include but not be limited to locking and fixing with screws / screws and welding. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A high-security protective structure, comprising a template, characterized in that: Also includes: The ejection assembly includes a ejector rod, a ejector core, a ball screw and a bayonet. One end of the ejector rod is passed through the template to extend from the top surface of the template. The ejector core is passed through the other end of the ejector rod. The bayonet is passed through the ejector rod and the ejector core in sequence along the radial direction. The ball screw is threaded into the ejector core, and the ball screw abuts against the side of the bayonet away from the ejector rod.

2. The high-security protective structure according to claim 1, characterized in that: An annular arc groove is provided on the outer side wall of the bayonet, and the ball screw abuts against the inner side wall of the annular arc groove.

3. The high-security protective structure according to claim 2, characterized in that: Two annular grooves are further provided on the outer side wall of the bayonet, and the two annular grooves are respectively located on both sides of the annular arc groove, so that each annular groove is aligned with the outer side wall of the top core and the inner side wall of the top rod.

4. The high-security protective structure according to claim 1, characterized in that: The axis of the push rod is provided with an inner sliding hole and an exhaust hole which are connected to each other. The inner sliding hole is located on one end of the push rod close to the top core, and the inner sliding hole is arranged along the axis of the push rod, and the exhaust hole is arranged along the radial direction of the push rod.

5. The high-security protective structure according to claim 1, characterized in that: An inner screw hole and an escape hole are provided at the axis of the top core. The escape hole is located at the end of the top core away from the top rod, and the inner screw hole is located at the end of the top core close to the top rod. The ball screw is screwed into the inner screw hole.

6. The high-security protective structure according to claim 1, characterized in that: The ejection assembly further includes a block and a spring. The block is arranged on an end of the ejector core away from the ejector rod. The spring is sleeved on the outer side walls of the ejector core and the ejector rod, and the spring is respectively in contact with the block and the template.

7. The high-security protective structure according to claim 6, characterized in that: A center hole is provided at the axis of the clamping block, and a clamping groove connected to the center hole is provided on the side of the clamping block away from the push rod. A protrusion is provided at the end of the top core away from the push rod, and the protrusion is accommodated in the clamping groove so that the clamping block is clamped with the top core.

8. The high-security protective structure according to claim 7, characterized in that: There are a plurality of protrusions, a plurality of card slots, and the protrusions are accommodated in the card slots in a one-to-one correspondence.

9. The high-security protective structure according to claim 8, characterized in that: The clamping block is further provided with a plurality of through slots connected to the central hole, and the through slots and the clamping slots are sequentially and spaced apart from each other on the periphery of the central hole, and the angles between any adjacent through slots and the clamping slots are equal.

10. The high-security protective structure according to claim 1, characterized in that: A clamping ring is provided at one end of the ejector rod away from the ejector core, and the clamping ring is used to abut against the template.

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