A non-reversing action in-line row structure

Abstract

This invention discloses a non-reverse motion-in-the-middle structure, including a hydraulic cylinder, a sliding seat, an upper sliding position, a lower sliding position, and two fastening assemblies. One side of the sliding seat is connected to the output shaft of the hydraulic cylinder, and the other side of the sliding seat is connected to one side of the lower sliding position. The top of the lower sliding position has a first sliding groove extending to the other side of the lower sliding position, and the bottom of the first sliding groove is a first inclined surface inclined downwards towards the other side of the lower sliding position. By adopting a non-reverse motion design, in the third stage of reset, the left and right sliding surfaces only adhere and tighten with the sealing surface of the die-cutting part (two-layer die) in the X direction (horizontal direction), eliminating the tightening force in the Z direction (height direction), thereby significantly reducing the risk of scratching the die-cutting part surface, protecting the appearance integrity of the die-cutting part, and reducing the product defect rate.

Description

Technical Field

[0001] This invention relates to the field of demolding technology for undercut positions of plastic products, and particularly to a non-reverse in-line structure. Background Technology

[0002] In plastic molds, products often have complex or irregularly shaped undercuts, and these products need to be fitted with plastic parts for molding. At the same time, the outer surface of the product is textured. Conventional row-in-row structures can cause the fitted parts to be scratched when the slides are reset, and the textured surface of the molded product can be damaged when the slides are pulled out. This increases the product defect rate, causes serious material loss, and increases production costs. Summary of the Invention

[0003] The purpose of this invention is to provide a non-reverse motion in-line structure. By adopting a non-reverse motion design, in the third stage of reset, the left and right moving surfaces and the sealing surface of the die-cutting part (two-layer blade) only produce X-direction (horizontal direction) adhesion and tightness, eliminating the Z-direction (height direction) tightness force, thereby greatly reducing the risk of scratching the die-cutting part surface, protecting the appearance integrity of the die-cutting part, and reducing the product defect rate.

[0004] To achieve the above objectives, the following technical solution is adopted: A non-reverse-motion traveling structure includes a hydraulic cylinder, a traveling seat, an upper traveling position, a lower traveling position, and two latching assemblies. One side of the traveling seat is connected to the output shaft of the hydraulic cylinder, and the other side of the traveling seat is connected to one side of the lower traveling position. The top of the lower traveling position has a first sliding groove extending to the other side of the lower traveling position, and the bottom of the first sliding groove is a first inclined surface inclined downwards towards the other side of the lower traveling position. The upper traveling position is slidably arranged in the first sliding groove, and the bottom of the upper traveling position is a second inclined surface that fits against the first inclined surface. The two latching assemblies are respectively arranged at one end of the traveling seat, and each end of the traveling seat is connected to a pull block. Each end of the top of the upper traveling position is connected to a control block, and one end of the control block extends between the latching assembly and one end of the traveling seat. The hydraulic cylinder is used to drive the traveling seat to move, and the control block is used, at least when the traveling seat moves, to cooperate with the pull block and the latching assembly to drive the upper traveling position to move relative to the lower traveling position.

[0005] Furthermore, the fastening assembly includes a fixed block and a movable block; the fixed block has a first groove extending through to the bottom of the fixed block on the side facing the travel seat, and the movable block is movably arranged in the first groove; the upper part of the movable block near the travel seat also has a first extension block extending outward, and the end of the first extension block near the oil cylinder is a plane, and the other end of the first extension block has a third inclined surface that slopes inward at its lower part; the inclination angle of the third inclined surface is the same as the inclination angle of the first inclined surface; the middle of the lower part of the movable block near the travel seat is a plane, and each end of the lower part of the movable block near the travel seat has a fourth inclined surface that slopes outward; a second extension block extends downward on one side of the bottom of the movable block, and a first spring is connected between the other side of the movable block and the bottom of the first groove.

[0006] Furthermore, a first insertion hole is provided on the other side of the movable block, and one end of the first spring is inserted into the first insertion hole.

[0007] Furthermore, the control block has an L-shaped structure, with the vertical end of the L-shaped control block connected to the upper position, and the horizontal end of the L-shaped control block located between one end of the fixed block and the position seat; a first notch is provided at the connection between the horizontal end of the L-shaped control block and the vertical end of the L-shaped control block, and the inner wall of the first notch is a plane; the end of the horizontal end of the L-shaped control block is provided with a fifth inclined surface for fitting with the third inclined surface.

[0008] Furthermore, the middle part of the side of the pulling block near the fixed block is a plane, and a sixth inclined surface is opened at each end of the side of the pulling block near the fixed block for fitting with the fourth inclined surface.

[0009] Furthermore, a first guide groove is formed at each end of the first chute along the inclined direction of the first inclined surface, and a guide block extends outward from the lower part of each end of the upward position; the guide block is inserted into the first guide groove.

[0010] Furthermore, it also includes a sand screw; a second insertion hole is provided on one side of the sliding seat along the inclined direction of the first inclined surface, and a limiting step is provided on the inner wall of the second insertion hole; one end of the sand screw with a nut is movably inserted into the second insertion hole, and the other end of the sand screw is connected to one side of the upper sliding seat.

[0011] By adopting the above solution, the beneficial effects of the present invention are: 1) By adopting a non-reverse motion design, in the third stage of reset, the left and right sliding surfaces and the sealing surface of the die-cutting part (two-layer blade) only produce X-direction (horizontal direction) adhesion and tightness, eliminating the Z-direction (height direction) tightness force, thereby greatly reducing the risk of scratching the die-cutting part surface, protecting the appearance integrity of the die-cutting part, and reducing the product defect rate. 2) In the first stage of core pulling, the 10° inclined plane of the control block and the moving block in the fastening assembly enables the upper part to achieve a two-way compound movement of moving down 2.78mm in height and moving outward 0.49mm in the mold direction. This action sequence of first giving way and then pulling the core effectively eliminates the Z-direction adhesion force between the upper part and the product texture surface, and prevents the product texture surface from being damaged during the core pulling process. It is especially suitable for products with high requirements for appearance texture quality (such as 21# texture surface). 3) The present invention adopts a symmetrical arrangement of two hydraulic cylinders on the left and right sides. Each side of the cylinder is precisely controlled by two sets of upper and lower fastening components. The structure is simple and compact, the operation is reliable, and the practicality is strong. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the product; Figure 2 This is a partial cross-sectional view of part 2; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5 This is a schematic diagram of the structure of the row position seat, control block, and pull block of the present invention; Figure 6 This is a schematic diagram of the structure of the uplink and downlink bits of the present invention; Figure 7 This is a schematic diagram of the structure of the present invention mounted on the mold; Figure 8 This is a schematic diagram of the fastening assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the fixing block of the present invention; Figure 10 This is a partial cross-sectional view of the invention after it has been installed on the mold; Figure 11 This is a schematic diagram of the structure for the first stage of resetting; Figure 12 for Figure 11 A magnified view of a portion of the image; Figure 13 This is a schematic diagram of the structure for the second stage of resetting; Figure 14 This is a schematic diagram of the structure of the third stage of reset; Figure 15 This is a structural diagram of the first stage of core pulling; Figure 16 This is a schematic diagram of the second stage of core pulling; The following are explanations of the labels in the attached diagram: 1. Hydraulic cylinder; 2. Sliding seat; 3. Upper sliding position; 4. Lower sliding position; 5. Fastening assembly; 6. Pulling block; 7. Control block; 21. Sand bolt; 22. Second insertion hole; 41. First slide groove; 42. First guide groove; 43. Guide block; 51. Fixed block; 52. Movable block; 53. First extension block; 54. Third inclined surface; 55. Fourth inclined surface; 56. Second extension block; 57. First spring; 61. Sixth inclined surface; 71. First notch; 72. Fifth inclined surface; 101. Front mold core; 102. Rear mold core; 103. Rear insert. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0014] Reference Figures 3 to 16 As shown, the present invention provides a non-reverse moving-in-movement structure. In one embodiment, it includes a hydraulic cylinder 1, a moving position seat 2, an upper moving position 3, a lower moving position 4, and two latching assemblies 5. One side of the moving position seat 2 is connected to the output shaft of the hydraulic cylinder 1, and the other side of the moving position seat 2 is connected to one side of the lower moving position 4. The top of the lower moving position 4 has a first sliding groove 41 extending to the other side of the lower moving position 4, and the bottom of the first sliding groove 41 is a first inclined surface that is inclined downwards towards the other side of the lower moving position 4. The upper moving position 3 is slidably arranged in the first sliding groove 41. Inside, the bottom of the upper position 3 is a second inclined surface that fits against the first inclined surface; the two fastening assemblies 5 are respectively arranged at one end of the position seat 2, and each end of the position seat 2 is connected to a pulling block 6; each end of the top of the upper position 3 is connected to a control block 7, and one end of the control block 7 extends between the fastening assembly 5 and one end of the position seat 2; the hydraulic cylinder 1 is used to drive the position seat 2 to move, and the control block 7 is at least used to cooperate with the pulling block 6 and the fastening assembly 5 to drive the upper position 3 to move relative to the lower position 4 when the position seat 2 moves.

[0015] Reference Figures 1 to 2 As shown, the product targeted by this invention is a three-layer blade, and the rubber material is black PA6+GF30. Its characteristics are: the mold has 1*2 cavities, and three-point gates are used for injection. Each cavity requires one two-layer blade product (the outer surface is 21# textured surface, with 2 blades) and one blade (the surface has a coating and a recessed stepped surface) to form the product. The outer surface of the product is 21# textured surface, and it is necessary to ensure that the outer surface texture is not damaged, and at the same time, it is necessary to ensure that the blade surface is not damaged and the sealing effect is achieved. In addition, because the product also has undercuts in the core pulling direction, and the recessed stepped surface of the blade also causes undercuts in the core pulling direction, a row-in-row molding scheme is adopted.

[0016] Specifically, refer to Figure 7 , Figure 10As shown, in this embodiment, it also includes a base plate, square iron, B plate, A plate, front mold core 101, rear mold core 102, rear insert 103, etc. Meanwhile, the fastening assembly 5 includes a fixed block 51 and a movable block 52. The fixed block 51 has a first groove extending to the bottom of the fixed block 51 on the side facing the sliding seat 2, and the movable block 52 is movably arranged in the first groove. The upper part of the movable block 52 near the sliding seat 2 also has a first extension block 53 extending outwards, and the end of the first extension block 53 near the oil cylinder 1 is flat, while the other end of the first extension block 53 has a third incline that slopes inwards at its lower part. Surface 54; the inclination angle of the third inclined surface 54 is the same as that of the first inclined surface; the middle of the lower part of the movable block 52 near the row seat 2 is a plane, and each end of the lower part of the movable block 52 near the row seat 2 is provided with an outwardly inclined fourth inclined surface 55; a second extension block 56 extends downward from one side of the bottom of the movable block 52, and a first spring 57 is connected between the other side of the movable block 52 and the bottom of the first groove; a first insertion hole is also opened on the other side of the movable block 52, and one end of the first spring 57 is inserted into the first insertion hole (to ensure the stability of the spring installation).

[0017] Furthermore, the control block 7 has an L-shaped structure, and the vertical end of the L-shaped control block 7 is connected to the upper position 3, while the horizontal end of the L-shaped control block 7 is located between one end of the fixed block 51 and the position seat 2. A first notch 71 is provided at the connection between the horizontal end and the vertical end of the L-shaped control block 7, and the inner wall of the first notch 71 is a plane. The end of the horizontal end of the L-shaped control block 7 is provided with a fifth inclined surface 72 for fitting with the third inclined surface 54. The middle part of the pull block 6 near the fixed block 51 is a plane, and each end of the pull block 6 near the fixed block 51 has a sixth inclined surface 61 for fitting with the fourth inclined surface 55.

[0018] Preferably, a first guide groove 42 is formed at each end of the first slide groove 41 along the inclined direction of the first inclined surface, and a guide block 43 extends outward from the lower part of each end of the upper position 3; the guide block 43 is inserted into the first guide groove 42; it also includes a rock screw 21; a second insertion hole 22 is also formed on one side of the position seat 2 along the inclined direction of the first inclined surface, and the inner wall of the second insertion hole 22 is also provided with a limiting step; one end of the rock screw 21 with a nut is movably inserted into the second insertion hole 22, and the other end of the rock screw 21 is connected to one side of the upper position 3.

[0019] In this embodiment, two hydraulic cylinders 1 are used for movement, one on the left and one on the right. The right movement consists of: upper / lower right movement 4, movement seat 2, upper / lower two sets of fastening components 5, rock bolt 21, pressure plate and guide block 43, wear-resistant block, hydraulic cylinder 1 and connecting block, etc. The left movement has the same structure as the right movement. Each set of fastening components 5 includes: control block 7 (fixed on upper movement 3), pull block 6 (locked on movement seat 2), fixed block 51 (locked on B plate), movable block 52 (installed in fixed block 51), and first spring 57 (placed in the hole of movable block 52). The specific action implementation process is described below: 1) During production, the A / B plate is opened, and after the oil cylinder 1 drives the left and right slides to fully pull the core, the ejector plate is reset. First, the two-layer cutter of (set-up part 1) is installed along the rear mold placement groove and fixed in the rear insert 103. Then, the (set-up part 2) blade is placed in the front mold placement groove. There is a magnet in the front mold groove, which can attract and fix it. 2) Hydraulic cylinder 1 drives the left and right sliding positions to begin resetting. In the first stage of resetting, such as... Figures 11 to 12 As shown, the slide seat 2 drives the lower slide 4 and the upper slide 3 to move 26.12mm (X direction) towards the mold center. At this time, the control block 7 and the movable block 52 are in contact (the plane of the inner wall of the first notch 71 of the control block 7 is in contact with the plane of one end of the first extension block 53, and the contact surface of the two is a straight surface), while the opening distance between the upper slide 3 and the slide seat 2 is 15.76mm (X direction). like Figure 13 As shown, in the second stage of reset, the sliding seat 2 drives the lower sliding seat 4 to move 15.76mm (X direction) towards the mold center. Because the upper sliding seat 3 is limited by the movable block 52 in the fastening assembly 5, it only moves 2.78mm in the height direction (Z direction, that is, the upper sliding seat 3 moves upward relative to the lower sliding seat 4 along the first inclined surface) and does not move in the X direction. At this time, the sliding seat 2 and the upper sliding seat 3 are in contact (the distance between them is 0mm), and the pulling block 6 in the fastening assembly 5 completely compresses the movable block 52 (the sixth inclined surface 61 of the pulling block 6 first contacts the fourth inclined surface 55 of the movable block 52. During the movement towards the mold center, the pulling block 6 will exert pressure on it, causing the movable block 52 to gradually shrink into the fixed block 51 until the plane in the middle of one side of the pulling block 6 contacts the plane in the middle of the lower part of one side of the movable block 52. At this time, the movable block 52 is completely compressed, and the upper sliding seat 3 is not blocked by the movable block 52). like Figure 14 As shown, in the third stage of reset, the slide seat 2 drives the lower slide 4 and the upper slide 3 to move 33.12mm (X direction) towards the mold center until the left and right slides fit together, so that the left and right slide surfaces fit and wrap tightly with the sealing surface of the two-layer blade of (sleeve die 1) only in the X direction (without wrapping in the Z direction), reducing the scratches on the surface of the sleeve die. 3) Next, the mold is closed. Since the left and right slides have been fully reset, the blade of the front mold (sleeve part 2) directly contacts the upper surface of the slide when the mold is closed. Then, the glue is injected, pressure is held, cooling is performed, and the mold is opened again until the A / B plates are fully opened. 4) Next, hydraulic cylinder 1 drives the left and right moving parts to begin core pulling, such as... Figure 15 As shown, in the first stage of core pulling, the sliding seat 2 drives the lower sliding position 4 to move 16.25 mm (X direction) to the outside of the mold. At this time, the control block 7 and the moving block 52 in the fastening machine assembly 5 interact (the contact surface of the two is a 10° inclined plane). The upper sliding position 3 achieves bidirectional movement of 2.78 mm downward in the height direction (Z direction) and 0.49 mm outward in the mold direction (X direction), which can prevent the product texture from being damaged. like Figure 16 As shown, in the second stage of core pulling, the slide seat 2 drives the lower slide 4 and the upper slide 3 to move 58.75mm (X direction) to the outside of the mold to complete the core pulling action. At this time, the opening distance between the upper slide 3 and the slide seat 2 is 15.76mm (X direction). 5) Then eject the product, remove it, and then install the second-layer cutter (set of die-cutting parts 1), and then install the blade (set of die-cutting parts 2). Then, the hydraulic cylinder 1 drives the left and right sliding positions to reset, and enter the next working cycle in sequence, thereby meeting the normal production of this type of product.

[0020] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-reverse row-in-row structure, characterized in that, The device includes a hydraulic cylinder, a sliding seat, an upper sliding position, a lower sliding position, and two latching assemblies. One side of the sliding seat is connected to the output shaft of the hydraulic cylinder, and the other side of the sliding seat is connected to one side of the lower sliding position. The top of the lower sliding position has a first sliding groove extending to the other side of the lower sliding position, and the bottom of the first sliding groove is a first inclined surface inclined downwards towards the other side of the lower sliding position. The upper sliding position is slidably arranged in the first sliding groove, and the bottom of the upper sliding position is a second inclined surface that fits against the first inclined surface. The two latching assemblies are respectively arranged at one end of the sliding seat, and each end of the sliding seat is connected to a pull block. Each end of the top of the upper sliding position is connected to a control block, and one end of the control block extends between the latching assembly and one end of the sliding seat. The hydraulic cylinder is used to drive the sliding seat to move, and the control block is used, at least when the sliding seat moves, to cooperate with the pull block and the latching assembly to drive the upper sliding position to move relative to the lower sliding position.

2. The non-reverse row-in-row structure according to claim 1, characterized in that, The fastening assembly includes a fixed block and a movable block; the fixed block has a first groove extending to the bottom of the fixed block on the side facing the travel seat, and the movable block is movably arranged in the first groove; the upper part of the movable block near the travel seat also has a first extension block extending outward, and the end of the first extension block near the oil cylinder is a plane, and the other end of the first extension block has a third inclined surface that slopes inward at its lower part; the inclination angle of the third inclined surface is the same as the inclination angle of the first inclined surface; the middle of the lower part of the movable block near the travel seat is a plane, and each end of the lower part of the movable block near the travel seat has a fourth inclined surface that slopes outward; a second extension block extends downward on one side of the bottom of the movable block, and a first spring is connected between the other side of the movable block and the bottom of the first groove.

3. The non-reverse row-in-row structure according to claim 2, characterized in that, The other side of the movable block is also provided with a first insertion hole, and one end of the first spring is inserted into the first insertion hole.

4. The non-reverse row-in-row structure according to claim 2, characterized in that, The control block has an L-shaped structure, with the vertical end of the L-shaped control block connected to the upper position, and the horizontal end of the L-shaped control block located between one end of the fixed block and the position seat; a first notch is provided at the connection between the horizontal end of the L-shaped control block and the vertical end of the L-shaped control block, and the inner wall of the first notch is a plane; the end of the horizontal end of the L-shaped control block is provided with a fifth inclined surface for fitting with the third inclined surface.

5. The non-reverse row-in-row structure according to claim 4, characterized in that, The middle part of the pull block near the fixed block is a plane, and a sixth inclined surface is opened at each end of the pull block near the fixed block for fitting with the fourth inclined surface.

6. The non-reverse row-in-row structure according to claim 1, characterized in that, A first guide groove is formed at each end of the first chute along the inclined direction of the first inclined surface, and a guide block extends outward from the lower part of each end of the upward position; the guide block is inserted into the first guide groove.

7. The non-reverse row-in-row structure according to claim 6, characterized in that, It also includes a rock screw; a second insertion hole is provided on one side of the sliding seat along the inclined direction of the first inclined surface, and a limiting step is provided on the inner wall of the second insertion hole; one end of the rock screw with a nut is movably inserted into the second insertion hole, and the other end of the rock screw is connected to one side of the upper sliding seat.

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