Large-angle inclined top demolding structure on a row

Abstract

The utility model relates to the field of injection molding, the utility model discloses a big angle inclined top demolding structure on row position, including setting on the B plate row position mechanism, and row position mechanism includes: row position seat, row position insert piece and inclined top mechanism, and the first slide groove is set up to row position seat bottom surface, and the slanting guide groove and second slide groove that set up respectively are communicated with each other to the both ends of row position insert piece, and the first slide groove is connected with second slide groove and forms the guide groove, the inclined top mechanism includes fixed block, slide, inclined top rod, inclined top locating block and first elastic element, and fixed block is set up in the guide groove inside along the linear sliding, and the one end of slide that is close to row position insert piece is slidably arranged to fixed block, and the slanting guide groove is slidably arranged to inclined top rod, and the one end of inclined top rod is set up to slide, and the B plate is slidably arranged to inclined top locating block, and the one end of inclined top locating block is equipped with the positioning structure, and the recess is set up to fixed block bottom surface, and the positioning structure sets up in recess inside. Can realize the smooth demolding of the product of complex and having big buckle position of side wall concave and convex shape.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to a large-angle inclined ejector demolding structure on a slide. Background Technology

[0002] In the mold industry, mechanical motion is a common motion method for slides. In injection molds, when the sidewalls of products with poor material plasticity have complex concave and convex shapes, a slide core-pulling mechanism is used for demolding. However, when the sidewalls of the product also have undercuts with large snaps, conventional slide core-pulling mechanisms are difficult to achieve smooth demolding of large snaps. The quality of large snap structures is unstable, making mass production difficult. Utility Model Content

[0003] The purpose of this invention is to provide a large-angle inclined ejector demolding structure on the slide to achieve smooth demolding of products with complex sidewall shapes and large snap-fits.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a large-angle inclined ejector demolding structure on a sliding plate, comprising a sliding mechanism disposed on plate B, wherein the sliding mechanism includes: A row position seat, wherein a first sliding groove is formed on the bottom surface of the row position seat; A sliding insert is provided at one end of a sliding seat. The two ends of the sliding insert are respectively provided with an inclined guide groove and a second sliding groove that are interconnected. The inclined guide groove is distributed at one end of the parting surface of the sliding insert. The first sliding groove and the second sliding groove are connected to form a guide groove. An inclined jacking mechanism includes a fixed block, a slide block, an inclined jacking rod, an inclined jacking positioning block, and a first elastic element. The fixed block is slidably disposed in a guide groove along a straight line. The slide block is slidably disposed at one end of the fixed block near the sliding insert. The inclined jacking rod is slidably disposed in the inclined guide groove. One end of the inclined jacking rod is disposed at the slide block. The sliding direction of the inclined jacking rod intersects the sliding direction of the fixed block at an angle. The sliding direction of the fixed block intersects the sliding direction of the slide block at an angle. The inclined top positioning block is slidably disposed on the B plate along the mold opening direction of the B plate. The sliding direction of the inclined top rod and the sliding direction of the fixed block are both perpendicular to the sliding direction of the inclined top positioning block. The first elastic element is used to drive the inclined top positioning block to move toward the fixed block. One end of the inclined top positioning block is provided with a positioning structure. The bottom surface of the fixed block is provided with a groove. The positioning structure is disposed inside the groove.

[0005] Preferably, when the mold is closed, the fixing block is disposed inside the first slide groove, and the positioning structure is disposed inside the groove; when the mold is opened, the fixing block is disposed inside the second slide groove, and the positioning structure is disposed outside the groove.

[0006] Preferably, the positioning mechanism further includes a second elastic element, which is sandwiched between the inner wall of the first groove and the fixed block, and the second elastic element is used to drive the fixed block toward the positioning insert.

[0007] Preferably, the positioning structure is a trapezoidal block, with a first inclined surface at the end of the positioning structure near the row insert and a second inclined surface at the end of the positioning structure away from the row insert. Both the first and second inclined surfaces are inclined about plate B. The angle α between the first inclined surface and plate B and the angle b between the second inclined surface and plate B satisfy the following relationship: 0 < b < 45° < a < 90°.

[0008] Preferably, the end of the inclined top rod away from the fixed block is provided with a hanging platform for forming an inverted buckle, and the inclined guide groove is inclined toward the center line of the sliding insert in a direction away from the second slide groove.

[0009] Preferably, the second groove is disposed on the side of the slide insert, and the second groove is an inverted L-shaped groove, while the first groove is disposed at one end of the bottom surface of the slide seat.

[0010] Preferably, the sliding mechanism further includes a wear-resistant plate, the wear-resistant plate is embedded with a sliding positioning block, the bottom surface of the sliding seat is provided with a positioning groove, the positioning groove and the sliding positioning block are provided in a one-to-one correspondence, one end of the sliding positioning block is provided inside the positioning groove, and the wear-resistant plate is provided with a through hole for the positioning structure to pass through.

[0011] Preferably, the bottom surface of the sliding seat is symmetrically provided with two pressure blocks, and the two ends of the fixing block are respectively slidably disposed on the two pressure blocks. The bottom surface of the two pressure blocks is provided with protrusions, and the wear-resistant plate is provided with strip grooves. The protrusions are slidably disposed in the strip grooves one by one.

[0012] Preferably, the first elastic element and the second elastic element are any one of a compression spring, a nitrogen spring, and a spring sheet.

[0013] Preferably, the center of the surface of the row insert away from the B plate is detachably provided with an interchangeable insert, the B plate is penetrated by a pin, and the pin passes through the B plate, the row insert and the interchangeable insert in sequence.

[0014] The beneficial effects of this utility model are as follows: During mold opening, the sliding insert first separates from the product sidewall, and the positioning structure of the inclined ejector block engages with the groove of the fixing block, fixing the fixing block inside the first slide groove. When the sliding insert is demolded, the inclined ejector remains stationary. This achieves demolding of the sliding insert from the product sidewall and snap-fit ​​position first, while the inclined ejector remains in contact with the sidewall. After demolding, the fixing block is located at the end of the second slide groove of the sliding insert. As the sliding insert continues to slide, the positioning structure of the inclined ejector block is squeezed out from the groove, and the sliding insert pushes the fixing block to move synchronously. The inclined ejector then completely disengages from the large snap-fit ​​position on the product sidewall. This improves the stability of the mold demolding structure of the snap-fit ​​position and ensures the normal function of the product structure. Attached Figure Description

[0015] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of the row positioning mechanism provided in an embodiment of the present invention; Figure 2 A front view of a row positioning mechanism provided in an embodiment of this utility model; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 for Figure 2 A cross-sectional view along the BB direction in the middle; Figure 5 This is a schematic diagram of the structure of a fixing block provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of an inclined top positioning block provided in an embodiment of the present invention; The markings in the diagram are: 1: sliding seat; 2: sliding insert; 3: fixing block; 4: inclined top positioning block; 5: inclined top rod; 6: first slide groove; 7: second slide groove; 8: slide block; 9: first elastic element; 10: second elastic element; 11: pressure block. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0018] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or may have an intervening element present simultaneously. "Inner" and "outer" refer to the inner and outer contours of a specific part. "Far" and "near" refer to the distance from or near to a certain component.

[0019] like Figures 1-6 As shown in the figure, an embodiment of the present invention provides a large-angle inclined ejector demolding structure on a slide, including a slide mechanism disposed on a B plate, the slide mechanism comprising: The bottom surface of the row position seat 1 is provided with a first sliding groove 6; The sliding insert 2 is disposed at one end of the sliding base 1. The two ends of the sliding insert 2 are respectively provided with an inclined guide groove and a second sliding groove 7 that are interconnected. The inclined guide groove is distributed at one end of the parting surface of the sliding insert 2. The first sliding groove 6 and the second sliding groove 7 are connected to form a guide groove. The inclined top mechanism includes a fixed block 3, a slide block 8, an inclined top rod 5, an inclined top positioning block 4, and a first elastic element 9. The fixed block 3 is slidably disposed in the guide groove along a straight line. The slide block 8 is slidably disposed at one end of the fixed block 3 near the sliding insert 2. The inclined top rod 5 is slidably disposed in the inclined guide groove. One end of the inclined top rod 5 is rotatably disposed on the slide block 8. The sliding direction of the inclined top rod 5 is inclinedly intersected with the sliding direction of the fixed block 3. The sliding direction of the fixed block 3 is inclinedly intersected with the sliding direction of the slide block 8. The inclined top positioning block 4 is slidably disposed on the B plate along the mold opening direction of the B plate. The sliding direction of the inclined top rod 5 and the sliding direction of the fixed block 3 are both perpendicular to the sliding direction of the inclined top positioning block 4. The first elastic element 9 is used to drive the inclined top positioning block 4 toward the fixed block 3. One end of the inclined top positioning block 4 is provided with a positioning structure. The bottom surface of the fixed block 3 is provided with a groove, and the positioning structure is disposed inside the groove.

[0020] When the mold is closed, the fixing block 3 is disposed in the first slide groove 6, and the positioning structure is disposed inside the groove; when the mold is opened, the fixing block 3 is disposed inside the second slide groove 7, and the positioning structure is disposed outside the groove.

[0021] The positioning structure of the inclined ejector positioning block 4 on plate B engages with the groove of the inclined ejector fixing block 3, keeping the inclined ejector fixing block 3 stationary during the mold opening of the slide seat 1. During the mold opening movement of the slide seat 1 and slide insert 2, the fixing block 3 and the inclined ejector rod 5 remain stationary, completing the product and slide ejection action. The pressure block 11 is fixed on the slide seat 1 and moves with the slide seat 1 to the inclined ejector locking position to complete demolding. When the fixing block 3 moves to the end of the second slide groove 7, the fixing block 3 and the second slide groove 7 press against each other. At this time, the slide insert 2 will push the fixing block 3 to move. The slide insert 2 will push the fixing block 3 to move, and the fixing block 3 will apply force to the positioning structure, pressing the inclined ejector positioning block 4 downwards, thus unlocking the fixing block 3 and the inclined ejector rod 5. After the inclined ejector is unlocked, the fixing block 3, along with the slide insert 2 and the inclined ejector rod 5, moves to the limit position to complete the separation from the product and mold opening action, completing the product locking and the ejection action of the inclined ejector rod 5.

[0022] The sliding mechanism further includes a second elastic element 10, which is sandwiched between the inner wall of the first slide groove 6 and the fixed block 3. The second elastic element 10 is used to drive the fixed block 3 toward the sliding insert 2. When the mold is closed, the second elastic element 10 is in a stationary state, and the fixed block 3 is located inside the first slide groove 6. When the mold is opened, the sliding seat 1 and the sliding insert 2 will move synchronously. The second elastic element 10 applies a spring force to the fixed block 3 to prevent the fixed block 3 from being driven by the sliding seat 1, so that the relative position of the fixed block 3 and the B plate remains unchanged when the sliding seat 1 and the sliding insert 2 move synchronously for mold opening.

[0023] The positioning structure is a trapezoidal block. The end of the positioning structure near the slide insert 2 has a first inclined surface, and the end away from the slide insert 2 has a second inclined surface. Both the first and second inclined surfaces are inclined relative to plate B. The angle α between the first inclined surface and plate B, and the angle b between the second inclined surface and plate B, satisfy the following relationship: 0 < b < 45° < a < 90°. The first inclined surface has an obtuse angle. The first inclined surface, inserted into the groove, blocks the fixing block 3, preventing it from sliding synchronously with the slide seat 1 during mold opening. When the fixing block 3 slides along the guide groove to the end of the second slide groove 7, it is pushed by the slide insert 2, causing the first inclined surface of the inclined top positioning block 4 to disengage from the fixing block 3, and the positioning structure of the inclined top positioning block 4 to contact the bottom surface of the slide insert 2.

[0024] The end of the inclined push rod 5 away from the fixed block 3 is provided with a hanging platform for forming an inverted buckle. The inclined guide groove is inclined towards the center line of the sliding insert 2 in a direction away from the second slide groove 7. The product buckle is formed between the hanging platform and the parting surface of the sliding insert 2. The inclined guide groove is inclined away from the center line of the sliding insert 2 in a direction close to the second slide groove 7 to avoid the inclined guide groove and the inclined push rod 5 inside interfering with the water channel or ejector pin inside the sliding insert 2.

[0025] Both the slide base 1 and the slide insert 2 are equipped with cooling water channels inside, and the outer walls of the slide base 1 and the slide insert 2 are provided with inlet and outlet water holes that communicate with the cooling water channels. The temperature of the parting surface of the slide insert 2 is controlled by the cooling water channels, so that the product can be cooled and shaped quickly.

[0026] The second slide groove 7 is located on the side of the sliding insert 2. The second slide groove 7 is an inverted L-shaped groove. The two ends of the second slide groove 7 are respectively connected to the inclined guide groove and the first slide groove 6. The first slide groove 6 is located at one end of the bottom surface of the sliding seat 1 and is connected to the bottom surface of the sliding seat 1. The positioning structure at the upper end of the inclined top positioning block 4 can slide inside the guide groove. The fixing block 3 and the inclined top positioning block 4 are both distributed at one end of the sliding seat 1 to avoid mutual interference between the inclined top mechanism and the internal water channel of the sliding seat.

[0027] The sliding mechanism also includes a wear-resistant plate, in which a sliding positioning block is embedded. The bottom surface of the sliding seat 1 is provided with a positioning groove, and the positioning groove and the sliding positioning block are arranged in a one-to-one correspondence. One end of the sliding positioning block is located inside the positioning groove. The wear-resistant plate is provided with a through hole for the positioning structure to pass through. The cross-section of the through hole is smaller than the cross-section of the inclined top positioning block 4.

[0028] The slide seat 1 is positioned by the slide positioning block on the wear-resistant plate, which improves the positioning accuracy of the slide seat 1 when the mold is closed again. The positioning structure of the inclined ejector positioning block 4 is positioned by the through hole on the wear-resistant plate, and the stroke of the inclined ejector positioning block 4 is limited by the wear-resistant plate to prevent the inclined ejector positioning block 4 from popping out too far.

[0029] The bottom surface of the sliding seat 1 is symmetrically provided with two pressure blocks 11. The two ends of the fixing block 3 are slidably disposed on the two pressure blocks 11. The bottom surface of both pressure blocks 11 is provided with protrusions. The wear-resistant plate has a strip groove, and the protrusions are slidably disposed inside the strip groove. The movement paths of the two pressure blocks 11 are respectively arranged on both sides of the positioning structure. When the sliding seat 1 slides to open or close the mold, the positioning structure at the upper end of the inclined fixing block 3 will slide between the two pressure blocks 11. Since the first sliding groove 6 is distributed on the bottom surface of the sliding seat 1, the fixing block 3 can be freely detached from the inside of the first sliding groove 6 when assembling the sliding mechanism. By fixing the pressure blocks 11 on the bottom surface of the sliding seat 1, the two pressure blocks 11 restrict the fixing block 3 inside the first sliding groove 6, preventing the fixing block 3 from detaching from the first sliding groove 6.

[0030] The first elastic element 9 and the second elastic element 10 are any one of a compression spring, a nitrogen spring, and a spring sheet. The first elastic element 9 drives the inclined ejector positioning block 4 toward the fixed block 3, so that the positioning mechanism contacts the fixed block 3, and the positioning mechanism locks the fixed block 3 to prevent it from sliding. The second elastic element 10 is used to drive the fixed block 3 toward the slide insert 2, so that the fixed block 3 slides to the mold closing position.

[0031] The sliding insert 2 has a detachable interchangeable insert on its surface away from plate B. A ejector pin passes through plate B, and the ejector pin sequentially passes through plate B, sliding insert 2, and the interchangeable insert. The interchangeable insert is offset from the inclined ejector rod 5 to avoid interference between them. Similarly, the ejector pin is offset from the inclined ejector rod 5 to avoid interference between it and the ejector rod. The interchangeable insert improves the versatility of the sliding mechanism by forming the product.

[0032] In some embodiments, the cross-section of the convex strip along its sliding direction is trapezoidal, and the upper end of the inclined top positioning block 4 is disposed on the movement path of the convex strip. When the positioning structure disengages from the groove, the convex strip moves to both sides of the positioning structure, pressing the inclined top positioning block 4 by the convex strip, thereby accelerating the speed at which the inclined top positioning block 4 disengages from the groove.

[0033] The inclined ejector positioning block 4 on plate B springs up under the action of the first elastic element 9, pressing against the inclined ejector fixing block 3, keeping the inclined ejector fixing block 3 stationary during the mold opening of the slide seat 1, completing the product ejection action from the slide seat. The pressure block 11 is fixed on the slide seat 1 and moves together with the slide seat 1 to the inclined ejector locking position to complete the demolding. The inclined ejector positioning block 4 is pressed down by the protrusion of the pressure block 11, and the inclined ejector mechanism is unlocked. After unlocking, the fixing block 3, together with the slide insert 2 and the inclined ejector rod 5, moves to the limit position to complete the action of separating from the product and opening the mold, completing the product locking and the ejection action of the inclined ejector rod 5.

[0034] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A large-angle inclined ejector demolding structure on a sliding block, characterized in that: Includes a row positioning mechanism mounted on the B-board, the row positioning mechanism comprising: A row position seat, wherein a first sliding groove is formed on the bottom surface of the row position seat; A sliding insert is provided at one end of a sliding seat. The two ends of the sliding insert are respectively provided with an inclined guide groove and a second sliding groove that are interconnected. The inclined guide groove is distributed at one end of the parting surface of the sliding insert. The first sliding groove and the second sliding groove are connected to form a guide groove. An inclined ejector mechanism includes a fixed block, a slide block, an inclined ejector rod, an inclined ejector positioning block, and a first elastic element. The fixed block is slidably disposed in a guide groove along a straight line. The slide block is slidably disposed at one end of the fixed block near the sliding insert. The inclined ejector rod is slidably disposed in the inclined guide groove. One end of the inclined ejector rod is disposed at the slide block. The sliding direction of the inclined ejector rod intersects the sliding direction of the fixed block at an angle. The sliding direction of the fixed block intersects the sliding direction of the slide block at an angle. The inclined top positioning block is slidably disposed on the B plate along the mold opening direction of the B plate. The sliding direction of the inclined top rod and the sliding direction of the fixed block are both perpendicular to the sliding direction of the inclined top positioning block. The first elastic element is used to drive the inclined top positioning block to move toward the fixed block. One end of the inclined top positioning block is provided with a positioning structure. The bottom surface of the fixed block is provided with a groove. The positioning structure is disposed inside the groove.

2. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: When the mold is closed, the fixing block is located inside the first slide groove, and the positioning structure is located inside the groove; when the mold is opened, the fixing block is located inside the second slide groove, and the positioning structure is located outside the groove.

3. The large-angle inclined ejector demolding structure on the slide according to claim 2, characterized in that: The positioning mechanism further includes a second elastic element, which is sandwiched between the inner wall of the first groove and the fixed block. The second elastic element is used to drive the fixed block toward the positioning insert.

4. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: The positioning structure is a trapezoidal block. The end of the positioning structure near the row insert has a first inclined surface, and the end of the positioning structure away from the row insert has a second inclined surface. Both the first and second inclined surfaces are inclined about plate B. The angle α between the first inclined surface and plate B and the angle b between the second inclined surface and plate B satisfy the following relationship: 0 < b < 45° < a < 90°.

5. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: The end of the inclined push rod away from the fixed block is provided with a hanging platform for forming an inverted buckle, and the inclined guide groove is inclined toward the center line of the sliding insert in a direction away from the second slide groove.

6. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: The second groove is provided on the side of the slide insert, and the second groove is an inverted L-shaped groove. The first groove is provided at one end of the bottom surface of the slide seat.

7. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: The sliding mechanism also includes a wear-resistant plate, in which a sliding positioning block is embedded. A positioning groove is provided on the bottom surface of the sliding seat. The positioning groove and the sliding positioning block are arranged in a one-to-one correspondence. One end of the sliding positioning block is located inside the positioning groove. The wear-resistant plate has a through hole for the positioning structure to pass through.

8. The large-angle inclined ejector demolding structure on the slide according to claim 7, characterized in that: The bottom surface of the sliding seat is symmetrically provided with two pressure blocks. The two ends of the fixing block are slidably disposed on the two pressure blocks respectively. The bottom surface of the two pressure blocks is provided with protrusions. The wear-resistant plate is provided with strip grooves. The protrusions are slidably disposed in the strip grooves one by one.

9. The large-angle inclined ejector demolding structure on the slide according to claim 3, characterized in that: The first elastic element and the second elastic element are any one of compression spring, nitrogen spring and spring sheet.

10. The large-angle inclined ejector demolding structure on the slide according to claim 1, characterized in that: The center of the surface of the row insert away from the B plate is detachably provided with an interchangeable insert. The B plate is penetrated by a pin, which passes through the B plate, the row insert and the interchangeable insert in sequence.

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