Ejection device capable of ejecting two parts at one time

Abstract

The utility model aims to provide a one-to-two ejection device, which comprises a base and an ejection component arranged at the bottom of a die holder, a sliding chute is arranged on one side surface of the base, the ejection component comprises a sliding frame, two ejection columns, a plurality of guide rods and a plurality of ejection columns, one end of each guide rod is arranged on the inner bottom wall of the sliding chute, and the other end of each guide rod is arranged on the inner bottom wall of the sliding chute. The other end of each guide rod extends towards an opening of the sliding groove, each guide rod penetrates through the sliding frame so that the sliding frame can be arranged in the sliding groove in a sliding mode, each jacking column is arranged on the sliding frame and penetrates through the base, the two ejection columns are arranged on the side face, away from the jacking columns, of the sliding frame respectively, and when the jacking columns are used for being pushed, the two ejection columns can be pushed out of the sliding frame. And the sliding frame drives the two ejection columns to extend out of the top surface of the base. Therefore, the ejection device can be shared by a plurality of sets of one-to-two die holders, the ejection devices with similar structures and functions can be prevented from being repeatedly manufactured, and the die development cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of molds, and in particular to a one-ejection-two-ejection device. Background Technology

[0002] Foaming molds are a type of mold used to manufacture products made of foamed materials. They are commonly used in the production of packaging materials, insulation materials, toys, and automotive interior parts.

[0003] In the automotive parts industry, steering wheels are almost always manufactured using foam molding. Existing foam molds use non-removable, integrated ejector devices that are mounted within the mold base. However, this structure has the following drawbacks: the main difference in steering wheel structure lies in the shape of the mold cavity, while the function and structure of the ejector device are almost identical. Currently, a separate foam mold is designed for each steering wheel, leading to the need for repeated manufacturing of the ejector device and excessive material costs. Therefore, to reduce mold production costs, this application proposes a stand-alone, reusable one-ejector-two-ejector device. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an independent, reusable one-outlet, two-ejector device that can be used with multiple sets of molds.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A single-ejector, double-ejector device, for use at the bottom of a mold base, comprising:

[0007] A base, wherein a groove is formed on one side surface of the base; and

[0008] The ejection assembly includes a carriage, two ejection columns, several guide rods, and several pressing columns. One end of each guide rod is disposed on the inner bottom wall of the slide groove, and the other end of each guide rod extends toward the opening of the slide groove. Each guide rod passes through the carriage so that the carriage can be slidably disposed within the slide groove. Each pressing column is disposed on the carriage and passes through the base. The two ejection columns are disposed on the side of the carriage away from the pressing columns. When the pressing columns are subjected to thrust, they cause the carriage to drive the two ejection columns to extend from the top surface of the base.

[0009] Optionally, the carriage has a cross-shaped structure.

[0010] Optionally, four guide rods are provided, and the four guide rods are respectively inserted through the carriage.

[0011] Optionally, three top pressure columns are provided, and the three top pressure columns are distributed in a straight line at intervals.

[0012] Optionally, a clearance groove is also provided on the side of the base away from the slide groove, and each of the top pressure columns is located in the clearance groove.

[0013] Optionally, the ejection assembly further includes a plurality of guide slides, each of which is disposed on the slide frame, and each guide rod is correspondingly inserted through one of the guide slides.

[0014] Optionally, the guide slide includes a guide sleeve, a top ring, and a retaining spring. The guide sleeve passes through the slide frame, the top ring is sleeved on the outer side wall of the guide sleeve, and the top ring abuts against one end of the slide frame and the guide sleeve respectively. The retaining spring is engaged with the other end of the guide sleeve and abuts against the slide frame. The guide rod is adapted to pass through the guide sleeve.

[0015] Optionally, a plurality of pads are provided on the side of the carriage near the top pressure column. When the pads are used to abut against the inner bottom wall of the slide groove, a gap is formed between the carriage and the inner bottom wall of the slide groove.

[0016] Optionally, two ejector rods are slidably disposed within the mold base, and the two ejector rods are respectively aligned with the two ejector pins.

[0017] Optionally, a spring is fitted on the demolding rod, and the spring abuts against the demolding rod and the mold base respectively. The spring is used to push the demolding rod closer to the ejector post.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This utility model discloses a one-out-two-ejection device, comprising a base and an ejection assembly, which are installed at the bottom of a mold base. A groove is formed on one side of the base. The ejection assembly includes a slide, two ejection pins, several guide rods, and several pressure pins. One end of each guide rod is disposed on the inner bottom wall of the groove, and the other end of each guide rod extends towards the opening of the groove. Each guide rod passes through the slide, allowing the slide to slide within the groove. Each pressure pin is disposed on the slide and passes through the base. The two ejection pins are respectively disposed on the side of the slide away from the pressure pins. When subjected to thrust, each pressure pin causes the slide to drive both ejection pins to extend from the top surface of the base. Thus, the ejection device can be shared by multiple one-out-two mold bases. The ejection device of this application is independent, facilitating disassembly or assembly with different foaming molds. Therefore, it avoids the repeated manufacturing of ejection devices with similar structures and functions, effectively reducing mold development costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a single-outlet and double-outlet device according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the one-outlet, two-outlet device from another angle;

[0023] Figure 3 for Figure 1 The diagram shows the bottom structure of the one-outlet and two-outlet device.

[0024] Figure 4 for Figure 1 A schematic cross-sectional view of the one-outlet, two-outlet device shown.

[0025] Figure 5 This is a schematic diagram of the structure of a mold base according to one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. One-outlet and two-outlet ejection device; 300. Mold base; 100. Base; 200. Ejection assembly; 110. Slide groove; 210. Slide frame; 220. Ejection column; 230. Guide rod; 240. Top pressure column; 120. Clearance groove; 250. Guide slide; 251. Guide sleeve; 252. Top ring; 253. Snap ring; 260. Pad; 400. Demolding rod; 500. Spring. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0029] like Figures 1 to 4As shown, a one-out-two-ejector device 10 is used to install at the bottom of a mold base 300. It includes a base 100 and an ejector assembly 200. A groove 110 is formed on one side of the base 100. The ejector assembly 200 includes a slide 210, two ejector pins 220, several guide rods 230, and several pressing pins 240. One end of each guide rod 230 is respectively disposed on the inner bottom wall of the groove 110, and the other end of each guide rod 230 extends towards the opening of the groove 110. The opening extends, and each guide rod 230 passes through the slide 210 so that the slide 210 is slidably disposed in the slide groove 110. Each top pressure column 240 is respectively disposed on the slide 210, and each top pressure column 240 passes through the base 100. Two ejector columns 220 are respectively disposed on the side of the slide 210 away from the top pressure column 240. When the top pressure column 240 is subjected to thrust, the slide 210 drives the two ejector columns 220 to extend out from the top surface of the base 100.

[0030] It should be noted that a groove 110 is formed in the top surface of the base 100, and each guide rod 230 is fixedly installed on the inner bottom wall of the groove 110, with the other end of each guide rod 230 facing the opening of the groove 110. Each guide rod 230 passes through the slide 210, allowing the slide 210 to slide along the guide rod 230. Further, two ejector pins 220 are fixedly installed on both ends of the same side of the slide 210 by bolts, and both ejector pins 220 are positioned facing the mold base 300. Each pressure pin 240 is fixedly installed on the side of the slide 210 away from the ejector pins 220 by bolts, and each pressure pin 240 passes through the inner bottom wall of the groove 110. It should be noted that the mold base 300 refers to different foaming molds. By fixing the base 100 to the foaming machine, different foaming molds, i.e., the mold bases 300, can be installed on the base 100, allowing the ejection device of this application to be used together. Specifically, during the demolding of the foamed workpiece, the foaming machine pushes up each ejector column 240, causing the slide 210 to slide stably along the guide rod 230 in the slide groove 110, thereby enabling the two ejector columns 220 to push the foamed workpiece in the mold base 300 for demolding. This allows the ejection device to be shared by multiple sets of one-to-two foaming molds. Furthermore, the ejection device of this application is independent, facilitating disassembly or combination with different foaming molds. Therefore, it avoids the repeated manufacturing of ejection devices with similar structures and functions, effectively reducing mold development costs.

[0031] In one embodiment, the carriage 210 has a cross-shaped structure. Correspondingly, the slide groove 110 also has a cross-shaped structure, so that the carriage 210 slides comfortably within the slide groove 110. Thus, by setting the carriage 210 to a cross-shaped structure, the carriage 210 can have sufficient length and width while minimizing its overall weight.

[0032] like Figure 2 As shown, in one embodiment, four guide rods 230 are provided, and the four guide rods 230 are respectively inserted through the slide 210.

[0033] Thus, a guide rod 230 is installed on each cross arm of the cross-shaped carriage 210, so that the carriage 210 can slide stably in the slide groove 110, thereby driving the two ejector columns 220 to extend or retract synchronously from the top surface of the base 100.

[0034] like Figure 3 As shown, in one embodiment, three top pressure columns 240 are provided, and the three top pressure columns 240 are distributed in a straight line at intervals. In this way, when the foaming machine pushes each top pressure column 240 so that the slide 210 can slide stably along each guide rod 230, the chain ejector columns 220 extend synchronously from the top surface of the base 100, thereby enabling synchronous pushing of the foamed workpiece in the foaming mold.

[0035] like Figure 3 and Figure 4 As shown, in one embodiment, a clearance groove 120 is also provided on the side of the base 100 away from the slide groove 110, and each top pressure column 240 is located in the clearance groove 120.

[0036] Thus, when the base 100 is installed on the foaming machine, the foaming machine can stably push each top pressure column 240 simultaneously, so that the slide 210 can slide stably along the axial direction of the guide rod 230.

[0037] like Figure 4 As shown, in one embodiment, the ejection assembly 200 further includes a plurality of guide slides 250, each guide slide 250 being disposed on the slide 210, and each guide rod 230 correspondingly passing through a guide slide 250.

[0038] It should be noted that guide rails 250 are provided to improve the sliding stability of the carriage 210 relative to the guide rod 230. Specifically, each guide rail 250 is installed on the carriage 210 at intervals, so that each guide rod 230 passes through each guide rail 250 in a corresponding manner, thereby improving the sliding stability of the carriage 210.

[0039] like Figure 4 As shown, in one embodiment, the guide slide 250 includes a guide sleeve 251, a top ring 252, and a retaining spring 253. The guide sleeve 251 passes through the slide 210, the top ring 252 is sleeved on the outer side wall of the guide sleeve 251, and the top ring 252 abuts against one end of the slide 210 and the guide sleeve 251 respectively. The retaining spring 253 is engaged with the other end of the guide sleeve 251, and the retaining spring 253 abuts against the slide 210. The guide rod 230 is adapted to pass through the guide sleeve 251.

[0040] It should be noted that, for example, a through hole is made in the slide 210, and the guide sleeve 251 is passed through the top ring 252 and the through hole in sequence, so that the top ring 252 abuts against one end of the slide 210 and the guide sleeve 251 respectively, and the retaining spring 253 is snapped onto the other end of the guide sleeve 251. In this way, the guide sleeve 251 is fixedly installed on the slide 210, and the guide rod 230 fits through the guide sleeve 251. For example, both the guide sleeve 251 and the guide rod 230 are made of wear-resistant steel, which can ensure that the slide 210 slides stably along the axial direction of the guide rod 230, while reducing wear.

[0041] like Figure 4 As shown, in one embodiment, a plurality of pads 260 are provided on one side of the slide 210 near the top pressure column 240. When the pads 260 are used to abut against the inner bottom wall of the slide groove 110, there is a gap between the slide 210 and the inner bottom wall of the slide groove 110.

[0042] It should be noted that when the ejector post 220 retracts into the base 100, in order to avoid direct collision between the slide 210 and the inner bottom wall of the slide groove 110, multiple pads 260 are provided on the inner bottom wall of the slide 210 near the slide groove 110. For example, the pads 260 are made of silicone material, thus preventing rigid collision between the slide 210 and the inner bottom wall of the slide groove 110.

[0043] like Figure 1 and Figure 5 As shown, in one embodiment, two ejector rods 400 are slidably disposed inside the mold base 300, and the two ejector rods 400 are respectively aligned with the two ejector pins 220.

[0044] It should be noted that one end of the demolding rod 400 is used to extend into the mold cavity of the mold base 300, and the mold cavity is used to form the foamed workpiece. When the foaming machine pushes up each of the ejector pins 240, the slide 210 drives the two ejector pins 220 to extend from the top surface of the base 100 to push up the two demolding rods 400 in the mold base 300, thereby allowing the demolding rods 400 to push up and demold the foamed workpiece in the mold cavity.

[0045] like Figure 5 As shown, in one embodiment, a spring 500 is sleeved on the demolding rod 400. The spring 500 abuts against the demolding rod 400 and the mold base 300 respectively. The spring 500 is used to push the demolding rod 400 closer to the ejector post 220.

[0046] It should be noted that under the elastic thrust of spring 500, the demolding rod 400 tends to approach the ejector pin 220 in its natural state. When the foaming machine pushes the ejector pins 240, the slide 210 drives the two ejector pins 220 to push the two demolding rods 400 respectively, and spring 500 is compressed by the demolding rod 400. When the foaming machine stops pushing the ejector pins 240, spring 500 pushes the demolding rod 400 back to its original position, causing the demolding rod 400 to push the ejector pins 220, and causing the slide 210 to return to its original position. It is important to note that spring 500 is installed on the demolding rod 400, rather than on the ejection device side, to ensure that the demolding rod 400 can stably return to its original position when not pushed by external force, ensuring that the mold cavity can stably form the foamed workpiece.

[0047] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A single-ejector, double-ejector device, used for installation at the bottom of a mold base, characterized in that, include: A base, wherein a groove is formed on one side surface of the base; and The ejection assembly includes a carriage, two ejection columns, several guide rods, and several pressing columns. One end of each guide rod is disposed on the inner bottom wall of the slide groove, and the other end of each guide rod extends toward the opening of the slide groove. Each guide rod passes through the carriage so that the carriage can be slidably disposed within the slide groove. Each pressing column is disposed on the carriage and passes through the base. The two ejection columns are disposed on the side of the carriage away from the pressing columns. When the pressing columns are subjected to thrust, they cause the carriage to drive the two ejection columns to extend from the top surface of the base.

2. The single-outlet, double-outlet device according to claim 1, characterized in that, The carriage has a cross-shaped structure.

3. The single-outlet, double-outlet device according to claim 2, characterized in that, The guide rods are provided in four parts, and the four guide rods are respectively inserted through the slide.

4. The single-outlet, double-outlet device according to claim 2, characterized in that, There are three top pressure columns, which are distributed in a straight line at intervals.

5. The single-outlet, double-outlet device according to claim 1, characterized in that, A clearance groove is also provided on the side of the base away from the slide groove, and each of the top pressure columns is located in the clearance groove.

6. The single-outlet, double-outlet device according to claim 1, characterized in that, The ejection assembly also includes several guide slides, each of which is disposed on the slide frame, and each guide rod is correspondingly inserted through one of the guide slides.

7. The single-outlet, double-outlet device according to claim 6, characterized in that, The guide sleeve includes a guide sleeve, a top ring, and a retaining spring. The guide sleeve passes through the slide frame, the top ring is sleeved on the outer side wall of the guide sleeve, and the top ring abuts against one end of the slide frame and the guide sleeve respectively. The retaining spring is engaged with the other end of the guide sleeve and abuts against the slide frame. The guide rod is adapted to pass through the guide sleeve.

8. The single-outlet, double-outlet device according to claim 1, characterized in that, A plurality of pads are provided on the side of the carriage near the top pressure column. When the pads abut against the inner bottom wall of the slide groove, a gap is created between the carriage and the inner bottom wall of the slide groove.

9. The single-outlet, double-outlet device according to claim 1, characterized in that, Two ejector rods are slidably disposed inside the mold base, and the two ejector rods are respectively aligned with the two ejector pins.

10. The single-outlet, double-outlet device according to claim 9, characterized in that, A spring is fitted on the demolding rod, and the spring abuts against the demolding rod and the mold base respectively. The spring is used to push the demolding rod closer to the ejector post.

Images