Mold inclined ejector structure capable of quickly compensating for the length of an ejector rod

Abstract

This utility model provides a mold inclined ejector structure for quick compensation of ejector pin length, belonging to the field of mold technology. It solves the technical problem of inconvenient assembly and adjustment of existing mold inclined ejector structures. The mold includes a moving mold and an inclined ejector block. The inclined ejector block is embedded in the upper side of the moving mold and can move upwards relative to the moving mold. The inclined ejector structure includes an inclined ejector rod and a threaded sleeve. The upper end of the inclined ejector rod is opposite to the inclined ejector block. The inclined ejector block is cylindrical, and its inner wall has an annular shoulder. The threaded sleeve is cylindrical, consisting of an integrally connected body and a stop at the end, making its axial cross-section T-shaped. The body and the shoulder are connected by a thread, and the length of the body is greater than the axial length of the shoulder, so that the lower end of the body extends beyond the shoulder and abuts against the upper end of the inclined ejector rod. The threaded sleeve is fixed to the upper end of the inclined ejector rod by a screw that passes through the body from top to bottom. The assembly and adjustment process of this mold inclined ejector structure is more efficient and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a mold inclined ejector structure for quickly compensating for the length of the ejector pin. Background Technology

[0002] In various injection molds for automotive lighting, ejector pins are crucial and commonly used standard components. Dimensional errors arising from variations in the length tolerances of purchased standard parts, the height tolerances of different mold plates, and machining precision can lead to inaccurate height matching between the ejector pin and the ejector block. If the pin is too short, a slight gap may exist between it and the ejector block, causing the ejector block to loosen during prolonged mass production. This can result in ejector block imprints, and in severe cases, the ejector block may fail to return to its lowest position, colliding with the mold cavity. Regular maintenance and inspection are necessary.

[0003] To this end, patent application publication number CN119388699A discloses an adjustable mechanism for the length of an inclined ejector pin on an injection mold, including a mold base, a core plate, a core fixing plate, an ejector pin base plate, and an ejector pin panel. An inclined ejector pin fixing seat is connected to the ejector pin base plate by an insert. A guide groove is provided in the inclined ejector pin fixing seat, and an inclined ejector pin slider is installed in the guide groove. An inclined ejector pin mounting hole and a threaded hole are provided in the inclined ejector pin slider. The upper end of the inclined ejector pin passes through the core plate and is connected to the inclined ejector pin block. The bottom of the inclined ejector pin is set in the inclined ejector pin mounting hole. A threaded sleeve is threaded into the threaded hole. The bottom surface of the inclined ejector pin contacts and is positioned with the top surface of the threaded sleeve. A locking nut is threaded to the lower outer side of the threaded sleeve. The locking nut is located below the inclined ejector pin slider. A threaded hole is provided on the bottom surface of the inclined ejector pin. A locking screw passes through the threaded sleeve and is threaded into the threaded hole on the bottom surface of the inclined ejector pin. The bottom of the inclined ejector pin contacts the side of the inclined ejector pin mounting hole to prevent rotation.

[0004] The above structure can be adjusted to match the inclined slide block according to the actual length of the inclined ejector rod, but there are still shortcomings: the operator needs to adjust the screw sleeve under the ejector plate, and cannot directly observe the actual positioning effect of the inclined slide block. Repeated observation and confirmation are required, and the operation, assembly and adjustment are not convenient. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a mold inclined ejector structure for rapid compensation of ejector pin length. The technical problem this utility model aims to solve is that the existing inclined ejector structure is inconvenient to assemble and adjust.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A mold slanted ejector structure for quick compensation of ejector rod length, the mold includes a moving mold and a slanted ejector block, the slanted ejector block being embedded from above on the upper side of the moving mold and movable upward relative to the moving mold, the slanted ejector structure including a slanted ejector rod and a threaded sleeve, the upper end of the slanted ejector rod being opposite to the slanted ejector block, characterized in that the slanted ejector block is cylindrical, the inner wall of the slanted ejector block having an annular shoulder, the threaded sleeve being cylindrical, the threaded sleeve being composed of an integrally connected body and a stop at the end, making its axial cross section T-shaped, the body and the shoulder being threadedly connected, and the length of the body being greater than the axial length of the shoulder, so that the lower end of the body extends out of the shoulder and abuts against the upper end of the slanted ejector rod, the threaded sleeve being fixed to the upper end of the slanted ejector rod by a screw penetrating the body from above.

[0008] By setting the inclined ejector block in a cylindrical shape and providing an annular shoulder on its inner wall, the main body of the threaded sleeve is inserted into the inner hole of the inclined ejector block and threadedly connected to the shoulder. The length of the main body is greater than the axial length of the shoulder. After installing the inclined ejector rod, before installing the screw, the main body can be rotated relative to the shoulder by controlling the threaded sleeve through the upper end of the threaded hole above the moving mold. This changes the length of the lower end of the main body extending beyond the shoulder. Due to the abutment relationship between the lower end of the main body and the upper end of the inclined ejector rod, their relative positions remain unchanged, thereby achieving the adjustment of the relative position between the inclined ejector block and the upper end of the inclined ejector rod. The adjustment is completed when the upper side of the inclined ejector block used to form the cavity is flush with the edges of other cavity parts. Finally, the screw is installed to fix the threaded sleeve and the inclined ejector rod to complete the assembly. The operator can directly observe the flushing state of the inclined ejector block while operating the rotation position of the threaded sleeve, eliminating the need for repeated adjustment and confirmation of the inclined ejector block position, making the assembly and adjustment process more efficient and convenient.

[0009] In the aforementioned mold inclined ejector structure for rapid compensation of ejector pin length, an elastic element is abutting between the end face of the stop and the shoulder. Under the action of the elastic element, the threaded sleeve is subjected to an upward force, ensuring that the thread on the outer circumference of the sleeve maintains a locking engagement with the threaded hole's internal thread. This means that during adjustment, the relative position of the sleeve and the inclined ejector block can be changed by compressing or extending the elastic element, while preventing movement between them due to factors such as the pitch of the mating threads. This ensures stable positioning after adjustment, avoids secondary adjustments, and facilitates convenient operation.

[0010] In the aforementioned mold inclined ejector structure for rapid compensation of ejector pin length, the elastic element is a butterfly spring or a compression spring, which is sleeved around the periphery of the main body. A butterfly spring, when compressed a unit distance, generates a larger reaction force, effectively ensuring the relative positional stability of the threaded sleeve and the inclined ejector block; a compression spring offers stable performance and good reliability.

[0011] In the aforementioned mold slanted ejector structure for rapid compensation of ejector pin length, the upper ends of both the stop and the screw are located within the inner hole of the slanted ejector block. This facilitates protection of the adjusting ends of the threaded sleeve and screw through the threaded hole, preventing them from easily loosening due to external forces.

[0012] In the aforementioned mold inclined ejector structure for rapid compensation of ejector pin length, the upper cross-section of the inner hole of the inclined ejector block and the cross-section of the stop are both circular, and the stop is embedded in the inner hole of the inclined ejector block. This allows the large end of the threaded sleeve to engage with the inner wall of the countersunk groove to form a protective layer, reducing the probability of debris and impurities intruding below the threaded sleeve and affecting the threaded connection between them, thus ensuring adjustment accuracy.

[0013] In the aforementioned mold angled ejector structure for quick compensation of ejector pin length, the upper side of the stop head has a central hexagonal socket, and the screw passes through the hexagonal socket. This allows operators to easily control the rotation and adjustment of the sleeve within a confined space using an existing hexagonal wrench, making operation convenient. Simultaneously, the screw passing through the hexagonal socket ensures that the screw acts on the center of the sleeve, resulting in reliable connection and convenient operation.

[0014] In the aforementioned mold inclined ejector structure with rapid compensation for ejector pin length, the upper end of the inclined ejector pin is inserted and circumferentially positioned at the lower end of the inner hole of the inclined ejector block. This helps to prevent the inclined ejector pin from being circumferentially deflected due to torque during the screw connection process, ensuring that the screw can be reliably tightened into place during assembly and guaranteeing connection stability.

[0015] In the aforementioned mold slanted ejector structure for rapid compensation of ejector pin length, the upper edge of the inner hole of the slanted ejector block is flared. This allows for quick and accurate insertion of the elastic element and threaded sleeve into the threaded hole, guided by the upper edge, thus improving assembly efficiency.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] This mold angled ejector structure with quick compensation for ejector pin length allows operators to directly determine whether the compensation is in place without changing the position of the adjustment operation when making compensation adjustments based on the actual length of the angled ejector pin. This eliminates the need for repeated adjustment and confirmation processes, making the assembly and adjustment process more efficient and convenient. Attached Figure Description

[0018] Figure 1 This is a partial three-dimensional structural schematic diagram of this embodiment.

[0019] Figure 2 This is a top view of a partial structure in this embodiment.

[0020] Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure.

[0021] Figure 4 yes Figure 3 Enlarged view of part B in the image.

[0022] Figure 5 yes Figure 4 Enlarged view of part C in the middle

[0023] Figure 6 This is a partially enlarged view of the screw sleeve being adjusted to another position with the screw facing upwards in this embodiment.

[0024] Figure 7 This is a three-dimensional exploded structural diagram of part of the structure in this embodiment.

[0025] Figure 8 This is a three-dimensional exploded structural diagram of part of the structure in this embodiment from another perspective.

[0026] Figure 9 This is a three-dimensional cross-sectional structural diagram of the inclined top block in this embodiment.

[0027] In the diagram, 1 represents the moving model;

[0028] 2. Sloping top block; 21. Protruding shoulder;

[0029] 3. Angled push rod; 4. Screw;

[0030] 5. Screw insert; 51. Body; 52. Stop; 521. Socket hexagonal groove;

[0031] 6. Elastic element; 7. Ejector plate; 8. Slider. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figure 1 , Figure 2 As shown, this mold includes a moving mold 1, an inclined ejector block 2, and an ejector plate 7. The inclined ejector block 2 is embedded on the upper side of the moving mold 1. The inclined ejector structure includes an inclined ejector rod 3 and a slider 8. The slider 8 is disposed on the ejector plate 7, and the lower end of the inclined ejector rod 3 is hinged to the slider 8.

[0034] like Figure 3 , Figure 4 , Figure 9As shown, the inclined pusher structure also includes a screw 4 and a threaded sleeve 5. The threaded sleeve 5 is cylindrical and consists of an integrally connected main body 51 and a stop 52 at the end, making its axial cross-section T-shaped. The lower end of the main body 51 abuts against the upper end of the inclined pusher rod 3. The inclined pusher rod 3 is fixed to the threaded sleeve 5 by a screw 4 that passes through the threaded sleeve 5 from top to bottom. The inclined pusher block 2 is cylindrical, and the inner wall of the inclined pusher block 2 has an annular shoulder 21. The main body 51 is connected to the shoulder 21 by threads, and the lower end of the main body 51 extends out of the shoulder 21. The longitudinal cross-section of the main body 51 is T-shaped with the larger end facing upward. An elastic element 6 is abutting between the stop 52 and the shoulder 21. The elastic element 6 is a butterfly spring, which is sleeved around the outer periphery of the main body 51. The upper ends of the stop 52 and the screw 4 are both lower than the upper edge of the inner hole of the inclined pusher block 2.

[0035] like Figure 5 As shown, the length of the main body 51 is greater than the axial dimension of the shoulder 21, there is a gap between the upper end of the inclined push rod 3 and the inclined push block 2, and the elastic element 6 between the stop head 52 and the shoulder 21 is in a compressed state.

[0036] like Figure 6 As shown, the screw sleeve 5 is adjusted upward relative to the inclined push block 2, compressing the gap space between the upper end of the inclined push rod 3 and the inclined push block 2. That is, the inclined push block 2 moves downward relative to the inclined push rod 3 by a certain distance. At the same time, the elastic element 6 at the large end of the screw sleeve 5 deforms and releases potential energy.

[0037] like Figure 7 As shown, the upper cross-section of the inner hole of the inclined ejector block 2 is circular, and the radial dimension of the large end of the threaded sleeve 5 is slightly smaller than the radial dimension of the inner hole of the inclined ejector block 2. The center of the upper side of the stop head 52 has an internal hexagonal groove 521, and the screw 4 passes through the internal hexagonal groove 521. The upper end of the inner hole of the inclined ejector block 2 is flared.

[0038] like Figure 8 As shown, the upper end of the inclined push rod 3 is inserted and circumferentially positioned at the lower end of the inner hole of the inclined push block 2.

[0039] After installing the new angled ejector rod 3, when the angled ejector rod 3 is long, it will lift the angled ejector block 2, making it higher than the upper side of the moving mold 1. The operator uses an Allen wrench to control the rotation of the threaded sleeve 5 to feed it upwards, thereby causing the angled ejector block 2 to move downwards relative to the moving mold 1. When it moves to the point where the edge of the cavity surface on the angled ejector block 2 is flush with the edge of the cavity surface on the moving mold 1, the adjustment is complete. Then, the threaded sleeve 5 and the angled ejector rod 3 are fixed from top to bottom with screws 4 to complete the assembly. When the angled ejector rod 3 is short, the threaded sleeve 5... There will initially be a certain gap between the lower end and the inclined ejector block 2, while the inclined ejector block 2 remains embedded in the upper side of the moving mold 1. The operator controls the screw sleeve 5 to rotate using a hex wrench to feed it downwards, so that the lower end of the screw sleeve 5 and the upper end of the inclined ejector rod 3 form abutment. Continuing to rotate can gradually lift the inclined ejector block 2 slightly. At this time, control the screw sleeve 5 to rotate in the opposite direction so that the edge of the cavity surface on the inclined ejector block 2 is flush with the edge of the cavity surface on the moving mold 1, and the adjustment is completed. Finally, install the screw 4 to complete the assembly.

[0040] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A mold inclined ejector structure for quickly compensating the length of an ejector rod, the mold comprising a movable mold (1) and an inclined ejector block (2) which is embedded in the upper side of the movable mold (1) from above and can move upward relative to the movable mold (1), the inclined ejector structure comprising an inclined ejector rod (3) and a threaded sleeve (5), the upper end of the inclined ejector rod (3) being opposite the inclined ejector block (2), characterized in that, The inclined top block (2) is cylindrical, and the inner wall of the inclined top block (2) has an annular shoulder (21). The threaded sleeve (5) is cylindrical, and the threaded sleeve (5) is composed of an integrally connected body (51) and a stop (52) located at the end, making its axial cross section T-shaped. The body (51) and the shoulder (21) are connected by threads, and the length of the body (51) is greater than the axial length of the shoulder (21), so that the lower end of the body (51) extends out of the shoulder (21) and abuts against the upper end of the inclined top rod (3). The threaded sleeve (5) is fixed to the upper end of the inclined top rod (3) by a screw (4) that passes through the body (51) from top.

2. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 1, characterized in that, An elastic element (6) is provided between the stop (52) and the shoulder (21) below.

3. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 2, characterized in that, The elastic element (6) is a butterfly spring or a compression spring, and the elastic element (6) is sleeved on the periphery of the main body (51).

4. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 1, 2, or 3, characterized in that, The upper ends of the stop (52) and the screw (4) are both lower than the upper edge of the inner hole of the inclined block (2).

5. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 4, characterized in that, The upper cross-section of the inner hole of the inclined top block (2) and the cross-section of the stop (52) are both circular, and the stop (52) is embedded in the inner hole of the inclined top block (2).

6. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 1, 2, or 3, characterized in that, The stop (52) has an internal hexagonal groove (521) in the center of its upper side, and the screw (4) passes through the internal hexagonal groove (521).

7. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 1, 2, or 3, characterized in that, The upper end of the inclined push rod (3) is inserted and circumferentially positioned at the lower end of the inner hole of the inclined push block (2).

8. The mold inclined ejector structure for rapid compensation of ejector pin length according to claim 4, characterized in that, The upper end of the inner hole of the inclined top block (2) is flared.

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