A multiple ejection mechanism for injection molds

Abstract

The utility model discloses a multiple ejection mechanism applied to an injection mold, comprising two groups of first stroke limit blocks, second stroke limit blocks and third stroke limit blocks, a plurality of locking seats, a plurality of support plates and a bottom plate; the plurality of support plates are stacked in sequence on the upper part of the bottom plate; each support plate is fixedly connected to four locking seats and is located between the first stroke limit block and the second stroke limit block or between the first stroke limit block and the third stroke limit block; when the support plate is not ejected, the locking seat is connected to the first stroke limit block; the support plate at the top is ejected, and the support plate at the bottom is ejected in sequence and connected between the second stroke limit block and the third stroke limit block through the locking seat. The multiple ejection mechanism applied to the injection mold solves the need for multiple ejection of the mold; it has high strength, is easy to disassemble and assemble during installation and maintenance, saves space, has good stability, can be used as a standard universal part, and reduces mold costs.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a multiple ejection mechanism applied to injection molds. Background Art

[0002] With the development of industry, the structure of injection molded parts involved in various industries is becoming more and more complex, the requirements are getting higher and higher, and the molding cycle is also required to be shorter and shorter. In many cases, due to structural reasons, the mold structure of the component products needs to be ejected three, four or more times to meet the production requirements of the mold. The traditional method is mostly to use spring and cylinder ejection structures, which are not only complex in structure and poor in strength, but also increase the mold cost and the molding cycle. At the same time, there are hidden dangers such as poor structural movement and malfunction in product production. The mold maintenance is also inconvenient, which affects the normal production of the product.

[0003] Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0004] In view of the above technical problems, the utility model provides a multiple ejection mechanism applied to an injection mold, which has a simple structure, smooth demoulding and good stability; especially when four, five or more sequential ejections are required, the structure is simple, easy to disassemble and assemble, and has high strength, and can be used as a standard universal part to reduce mold costs.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] A multiple ejection mechanism for an injection mold, comprising a first stroke limit block, a second stroke limit block, a third stroke limit block, a plurality of locking seats, a plurality of support plates and a bottom plate; the plurality of support plates are stacked in sequence on the top of the bottom plate;

[0007] The first stroke limit block, the second stroke limit block and the third stroke limit block are arranged in parallel, the first stroke limit block is located between the second stroke limit block and the third stroke limit block, and has two groups respectively, which are located on opposite sides of the carrier plate;

[0008] The first travel limit block is fixedly connected to the uppermost support plate, and the second travel limit block and the third travel limit block are fixed to the bottom plate;

[0009] Each of the supporting plates is fixedly connected to four of the locking seats and is located between the first stroke limit block and the second stroke limit block or between the first stroke limit block and the third stroke limit block; when the supporting plate is not ejected, the locking seat is connected to the first stroke limit block; the uppermost supporting plate is ejected, and the lowermost supporting plate is ejected in sequence and connected between the second stroke limit block and the third stroke limit block through the locking seat.

[0010] The first stroke limit block of the multiple ejection mechanism applied to the injection mold is connected as a whole with the uppermost support plate, and the other support plates are connected to the first stroke limit block through the locking seat; when the uppermost support plate is ejected, the first stroke limit block moves together and drives the other support plates to be ejected together; starting from the lowermost support plate, after ejection to a certain stroke, the locking seat on the support plate is respectively connected to the second stroke limit block and the third stroke limit block and disconnected from the first stroke limit block, and the support plates are ejected from bottom to top in sequence, and connected between the second stroke limit block and the third stroke limit block through the locking seat. This mechanism solves the need for multiple ejection of the mold; each support plate shares four locking seats at the front and back to connect with the first stroke limit block, or is connected together between the second stroke limit block and the third stroke limit block, has high strength, is easy to disassemble and assemble during installation and maintenance, saves space, has good stability, can be used as a standard universal part, and reduces mold costs.

[0011] According to a further optimized solution, the locking seat includes a seat body, a sliding pin, a spring and a cover plate;

[0012] The seat body is provided with an inner groove which is wide in the middle and narrow at both ends;

[0013] The sliding pin is located in the inner groove and can move in the penetrating direction. The sliding pin is provided with a step. The spring is sleeved on the sliding pin, one end of which abuts against the step and the other end abuts against the inner wall of the inner groove. The spring is in a compressed state, forcing the sliding pin to have a force to move outward.

[0014] The cover plate covers the inner groove.

[0015] The locking seat can realize the automatic fastening and connection by moving the sliding pin outwards through the elastic force of the spring, and can also disconnect by applying pressure to compress the spring, and has the function of automatic connection and disconnection. It has a simple structure and is easy to install, and can be used as a standard universal part.

[0016] In a further optimized solution, the locking seat further comprises a pin which penetrates the seat body and is positioned on the support plate. The provision of the pin ensures the position accuracy of the connection between the locking seat and the support plate and the stability during the movement.

[0017] In a further optimized solution, the first travel limit block, the second travel limit block and the third travel limit block are respectively provided with a first positioning groove, a second positioning groove and a third positioning groove which cooperate with the sliding pin. The first positioning groove, the second positioning groove and the third positioning groove are provided to realize connection with the sliding pin, thereby realizing connection between the locking seat and the first travel limit block, the second travel limit block and the third travel limit block.

[0018] In a further optimized solution, a positioning pin is provided between the first travel limit block and the uppermost support plate, and the positioning pin ensures the position accuracy of the connection between the first travel limit block and the uppermost support plate and the stability during the movement.

[0019] In a further optimized solution, the two ends of the sliding pin and the first positioning groove, the second positioning groove and the third positioning groove respectively have chamfered structures that cooperate with each other. The chamfered structures facilitate the sliding pin to buckle into and out of the first positioning groove, the second positioning groove and the third positioning groove, prevent it from getting stuck during the movement, and facilitate the smooth movement of the locking seat sliding pin.

[0020] Compared with the prior art, the utility model has the following technical advantages:

[0021] The multiple ejection mechanism applied to the injection mold solves the demand for multiple ejection of the mold; each carrier plate shares four locking seats at the front and back to be connected with the first stroke limit block, or is connected together between the second stroke limit block and the third stroke limit block, has high strength, is easy to disassemble and assemble during installation and maintenance, saves space, and has good stability; the locking seats used for connection can be used as standard universal parts, thereby reducing mold costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a stereogram of a specific embodiment of the utility model applied to the multiple ejection mechanism of the injection mold;

[0023] Figure 2 yes Figure 1 Exploded view of the front parts;

[0024] Figure 3 yes Figure 2 Exploded view of the parts of the middle locking seat;

[0025] Figures 4 to 9 yes Figure 1 Schematic diagram after multiple carrier plates are ejected one by one.

[0026] In the figure: a first stroke limit block 10, a first positioning groove 11, a second stroke limit block 20, a second positioning groove 21, a third stroke limit block 30, a third positioning groove 31, a locking seat 40, a seat body 41, an inner groove 41a, a sliding pin 42, a step 42a, a spring 43, a cover plate 44, a pin 45, a connecting piece 46, a supporting plate 50, a bottom plate 60, and a positioning pin 70. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings.

[0028] like Figures 1 to 9 As shown, a specific embodiment of the multiple ejection mechanism of the utility model applied to an injection mold is a five-time ejection mechanism.

[0029] like Figure 1 and Figure 2 As shown, the multiple ejection mechanism applied to the injection mold of this embodiment includes two first stroke limit blocks 10, two second stroke limit blocks 20, two third stroke limit blocks 30, sixteen locking seats 40, five supporting plates 50 and a bottom plate 60; the five supporting plates 50 are stacked in sequence on the upper part of the bottom plate 60.

[0030] like Figure 1 and Figure 2 As shown, the first stroke limit block 10, the second stroke limit block 20 and the third stroke limit block 30 are arranged in parallel, and the first stroke limit block 10 is located between the second stroke limit block 20 and the third stroke limit block 30, and has two groups respectively, which are located on opposite sides of the carrier plate 50.

[0031] like Figure 1 and Figure 2 As shown, the first travel limit block 10 is fixedly connected to the uppermost support plate 50 by two bolts, and two positioning pins 70 are arranged between the two to position each other. The positioning pins 70 ensure the position accuracy of the connection between the first travel limit block 10 and the uppermost support plate 50 and the stability during the movement. The second travel limit block 20 and the third travel limit block 30 are fixed on the bottom plate 60.

[0032] like Figure 1 As shown, each carrier plate 50 is fixedly connected to four locking seats 40, two at the front and two at the back, and are located between the first stroke limit block 10 and the second stroke limit block 20 or between the first stroke limit block 10 and the third stroke limit block 30; when the carrier plate 50 is not ejected, the locking seat 40 is connected to the first stroke limit block 10; the uppermost carrier plate 50 is ejected, and the lowermost carrier plate 50 is ejected in sequence and connected between the second stroke limit block 20 and the third stroke limit block 30 through the locking seat 40.

[0033] The first stroke limit block of the multiple ejection mechanism applied to the injection mold is connected to the uppermost support plate as a whole, and the other support plates are connected to the first stroke limit block through the locking seat; when the uppermost support plate is ejected, the first stroke limit block moves together and drives the other support plates to be ejected together; starting from the lowermost support plate, after ejection to a certain stroke, the locking seat on the support plate is respectively connected to the second stroke limit block and the third stroke limit block and disconnected from the first stroke limit block, and the support plates are ejected from bottom to top in sequence, and connected between the second stroke limit block and the third stroke limit block through the locking seat. This mechanism solves the need for multiple ejection of the mold; each support plate shares four locking seats at the front and back to connect with the first stroke limit block, or is connected together between the second stroke limit block and the third stroke limit block, has high strength, is easy to disassemble and assemble during installation and maintenance, saves space, has good stability, can be used as a standard universal part, and reduces mold costs.

[0034] like Figure 3 As shown, the locking seat 40 includes a seat body 41, a sliding pin 42, a spring 43 and a cover plate 44; the seat body 41 is provided with an inner groove 41a which is wide in the middle and narrow at both ends; the sliding pin 42 is located in the inner groove 41a and can move along the direction of penetration, the sliding pin 42 is provided with a step 42a, and the spring 43 is sleeved on the sliding pin 42 with one end abutting against the step 42a and the other end abutting against the inner wall of the inner groove 41a, and the spring 43 is in a compressed state to force the sliding pin 42 to have a force to move outward; the cover plate 44 covers the inner groove 41a.

[0035] The locking seat realizes the automatic fastening connection by moving the sliding pin outwards through the elastic force of the spring, and can also disconnect by applying pressure to compress the spring, and has the function of automatic connection and disconnection. It has a simple structure and is easy to install, and can be used as a standard universal part.

[0036] like Figure 3 As shown, the locking seat 40 also includes two pins 45, which are arranged diagonally with respect to the inner groove 41a, penetrate the seat body 41 and are positioned on the support plate 50. The arrangement of the pins ensures the position accuracy of the connection between the locking seat and the support plate and the stability during the movement. The locking seat 40 is connected to the support plate 50 through two connecting members 46, namely bolts that penetrate the cover plate 44 and the seat body 41, and the two connecting members 46 are arranged diagonally with respect to the inner groove 41a.

[0037] like Figure 3 and Figure 4 As shown, the two ends of the sliding pin 42 have chamfered structures that match the first positioning groove 11, the second positioning groove 21 and the third positioning groove 31. The chamfered structures facilitate the sliding pin to buckle into and out of the first positioning groove, the second positioning groove and the third positioning groove, prevent it from getting stuck during the movement, and facilitate the smooth movement of the locking seat sliding pin.

[0038] like Figure 2and Figure 4 As shown, the first travel limit block 10, the second travel limit block 20 and the third travel limit block 30 are respectively provided with a first positioning groove 11, a second positioning groove 21 and a third positioning groove 31 that match the sliding pin 42. The first travel limit block 10 is provided with a first positioning groove 11 on both sides, the second travel limit block 20 is provided with a second positioning groove 21 on the side facing the first travel limit block 10, and the third travel limit block 30 is provided with a third positioning groove 31 on the side facing the first travel limit block 10. The first positioning groove 11, the second positioning groove 21 and the third positioning groove 31 are provided to realize the connection with the sliding pin 42, thereby realizing the connection between the locking seat 40 and the first travel limit block 10, the second travel limit block 20 and the third travel limit block 30.

[0039] like Figure 4 As shown, all five supporting plates 50 are in an un-ejected state, and one end of the sliding pin 42 of all the locking seats 40 is compressed under the action of the side of the second stroke limit block 20 and the third stroke limit block 30, and the spring 43 in the locking seat 40 is compressed, and the sliding pin 42 moves, and the other end thereof is buckled into the third positioning groove 31 of the first stroke limit block 10.

[0040] like Figure 5 As shown, the uppermost carrier plate 50 is ejected, and the first travel limit block 10 moves together and drives the other four carrier plates 50 to be ejected together. After moving to a certain stroke, the sliding pin 42 of the locking seat 40 on the lowermost carrier plate 50 is buckled into the second positioning groove 21 of the second travel limit block 20 or the third positioning groove 31 of the third travel limit block 30 under the action of the spring 43, and the sliding pin 42 is separated from the first positioning groove 11 of the first travel limit block 10. At this time, the lowermost carrier plate 50 is ejected and fixed between the second travel limit block 20 and the third travel limit block 30.

[0041] like Figure 6 As shown, the uppermost carrier plate 50 continues to be ejected, and the first travel limit block 10 moves together and drives the other three carrier plates 50 to be ejected together. After moving to a certain travel, the sliding pin 42 of the locking seat 40 on the lowermost penultimate carrier plate 50 is buckled into the second positioning groove 21 of the second travel limit block 20 or the third positioning groove 31 of the third travel limit block 30 under the action of the spring 43, and the sliding pin 42 is separated from the first positioning groove 11 of the first travel limit block 10. At this time, the lowermost penultimate carrier plate 50 is ejected and fixed between the second travel limit block 20 and the third travel limit block 30.

[0042] like Figure 7As shown, the uppermost carrier plate 50 continues to be ejected, and the first travel limit block 10 moves together and drives the other two carrier plates 50 to be ejected together. After moving to a certain stroke, the sliding pin 42 of the locking seat 40 on the bottom third-to-last carrier plate 50 is buckled into the second positioning groove 21 of the second travel limit block 20 or the third positioning groove 31 of the third travel limit block 30 under the action of the spring 43, and the sliding pin 42 is separated from the first positioning groove 11 of the first travel limit block 10. At this time, the bottom third-to-last carrier plate 50 is ejected and fixed between the second travel limit block 20 and the third travel limit block 30.

[0043] like Figure 8 As shown, the uppermost carrier plate 50 continues to be ejected, and the first travel limit block 10 moves together and drives the other three carrier plates 50 to be ejected together. After moving to a certain stroke, the sliding pin 42 of the locking seat 40 on the fourth-to-last carrier plate 50 from the bottom is buckled into the second positioning groove 21 of the second travel limit block 20 or the third positioning groove 31 of the third travel limit block 30 under the action of the spring 43, and the sliding pin 42 is separated from the first positioning groove 11 of the first travel limit block 10. At this time, the fourth-to-last carrier plate 50 from the bottom is ejected and fixed between the second travel limit block 20 and the third travel limit block 30.

[0044] like Fig. 9 As shown, the uppermost carrier plate 50 continues to be ejected, and the first stroke limit block 10 moves together to a certain stroke to complete the five ejection actions of the ejection mechanism. The multiple ejection mechanism applied to the injection mold is not limited to five ejection actions, and can also achieve three, four, or more than six, seven, or other ejection actions.

[0045] The multiple ejection mechanism applied to the injection mold solves the demand for multiple ejection of the mold; each carrier plate shares four locking seats at the front and back to be connected with the first stroke limit block, or is connected together between the second stroke limit block and the third stroke limit block, has high strength, is easy to disassemble and assemble during installation and maintenance, saves space, and has good stability; the locking seats used for connection can be used as standard universal parts, thereby reducing mold costs.

[0046] In summary, the utility model is as described in the specification and the illustrations, and actual samples are made and tested for multiple times. From the test results, it is proved that the utility model can achieve the expected purpose and its practicality is beyond doubt. The above embodiments are only used to facilitate the description of the content of the utility model, and are not formally limited to it; any equivalent embodiment made by partial changes or modifications made by anyone with common knowledge in the technical field of the utility model without departing from the scope of the technical features and similar features of the utility model, using the technical content disclosed by the utility model, belongs to the protection scope of the utility model.

Claims

1. A multiple ejection mechanism for an injection mold, characterized in that: It comprises a first stroke limit block (10), a second stroke limit block (20), a third stroke limit block (30), a plurality of locking seats (40), a plurality of support plates (50) and a bottom plate (60); the plurality of support plates (50) are stacked in sequence on the upper part of the bottom plate (60); The first stroke limit block (10), the second stroke limit block (20) and the third stroke limit block (30) are arranged in parallel, the first stroke limit block (10) is located between the second stroke limit block (20) and the third stroke limit block (30), and has two groups, which are located on opposite sides of the carrier plate (50); The first stroke limit block (10) is fixedly connected to the uppermost support plate (50), and the second stroke limit block (20) and the third stroke limit block (30) are fixed on the bottom plate (60); Each of the support plates (50) is fixedly connected to four of the locking seats (40) and is located between the first travel limit block (10) and the second travel limit block (20) or between the first travel limit block (10) and the third travel limit block (30); when the support plate (50) is not ejected, the locking seat (40) is connected to the first travel limit block (10); the support plate (50) at the top is ejected, and the support plates (50) at the bottom are ejected in sequence and connected between the second travel limit block (20) and the third travel limit block (30) through the locking seat (40).

2. The multiple ejection mechanism for injection mold according to claim 1, characterized in that: The locking seat (40) comprises a seat body (41), a sliding pin (42), a spring (43) and a cover plate (44); The seat body (41) is provided with an inner groove (41a) which is wide in the middle and narrow at both ends. The sliding pin (42) is located in the inner groove (41a) and can move in the penetrating direction. The sliding pin (42) is provided with a step (42a). The spring (43) is sleeved on the sliding pin (42) with one end abutting against the step (42a) and the other end abutting against the inner wall of the inner groove (41a). The spring (43) is in a compressed state to force the sliding pin (42) to move outward. The cover plate (44) covers the inner groove (41a).

3. The multiple ejection mechanism for injection mold according to claim 2, characterized in that: The locking seat (40) also includes a pin (45) that passes through the seat body (41) and is positioned on the support plate (50).

4. The multiple ejection mechanism for injection mold according to claim 2, characterized in that: The first travel limit block (10), the second travel limit block (20) and the third travel limit block (30) are respectively provided with a first positioning groove (11), a second positioning groove (21) and a third positioning groove (31) which cooperate with the sliding pin (42).

5. The multiple ejection mechanism for injection mold according to claim 1, characterized in that: A positioning pin (70) is provided between the first travel limit block (10) and the uppermost support plate (50).

6. The multiple ejection mechanism for injection mold according to claim 4, characterized in that: Both ends of the sliding pin (42) and the first positioning groove (11), the second positioning groove (21) and the third positioning groove (31) respectively have chamfered structures that match each other.

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