A mold release and clamping structure for injection molding of automobile light distribution mirror

Abstract

The present invention provides a mold release and locking structure of an injection molding mold for automobile lens, comprising a power cylinder, a sliding rod, a pulling rod, a fixing strip, a fixing block and a spring sheet, wherein the fixing strip is fixed to the side wall of a middle mold, the power cylinder is connected to the side wall of an upper mold, the sliding rod is connected to a power shaft of the power cylinder, the fixing block is fixed to the side wall of a lower mold, one end of the pulling rod is hinged to the fixing block through a pin shaft, and the other end of the pulling rod extends toward the direction close to the sliding rod, one end of the spring sheet is connected to the positioning block, and the other end of the spring sheet is connected to the pulling rod, and an end of the pulling rod close to the sliding rod is provided with a stepping block for connecting with the fixing strip, the sliding rod moves toward the direction close to the pulling rod and separates the stepping block from the fixing strip through a conducting component, thereby achieving the purpose of improving practicality.

Description

Technical Field

[0001] The invention relates to an injection mold, in particular to a mold release and clamping structure of an automobile lens injection molding mold. Background Art

[0002] At present, a Chinese patent with authorization announcement number CN214349104U discloses a mold, including a first sub-mold and a second sub-mold, the first sub-mold and the second sub-mold have a first direction along the thickness direction of the mold, the first sub-mold and the second sub-mold can be covered or opened along the first direction, the first sub-mold includes a main body and a first protrusion arranged on the main body, and a first groove is provided on the first protrusion; the second sub-mold is provided with a second groove matched with the first protrusion, and a second protrusion matched with the first groove is arranged in the second groove, and the second protrusion has at least one side inclined to the first direction; when the first sub-mold and the second sub-mold are covered, the first protrusion is located in the second groove, the second protrusion is located in the first groove, and the side of the second protrusion inclined to the first direction abuts against the side wall forming the first groove.

[0003] This type of mold can extend the service life of the mold and improve the accuracy of the mold. For a mold with an upper mold, a middle mold, and a lower mold, the first cavity is located between the upper mold and the middle mold, and the second cavity is located between the middle mold and the lower mold. During the injection molding process, the middle mold and the lower mold need to be fixed. This type of mold obviously cannot have this function and is not very practical. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a mold release and clamping structure for an automobile lens injection molding mold to achieve the purpose of improving practicality.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a mold release and locking structure of an automobile lens injection molding mold, comprising a power cylinder, a sliding rod, a pull rod, a fixed bar, a fixed block and a spring sheet, wherein the fixed bar is fixed to the side wall of the middle mold, the power cylinder is connected to the side wall of the upper mold, the sliding rod is connected to the power shaft of the power cylinder, the fixed block is fixed to the side wall of the lower mold, one end of the pull rod is hinged to the fixed block through a pin shaft, and the other end of the pull rod extends toward the direction close to the sliding rod, one end of the spring sheet is connected to the positioning block, and the other end of the spring sheet is connected to the pull rod, and the end of the pull rod close to the sliding rod is provided with a block for connecting to the fixed bar, and the sliding rod moves toward the direction close to the pull rod and separates the block from the fixed bar through the conduction component.

[0006] To implement the above technical solution, the power cylinder is started, and the power shaft drives the slide rod to move toward the direction close to the building block. The slide rod separates the building block from the fixed bar through the conduction component. At the same time, the pull rod flips along the axis of the pin shaft, so that the middle mold can be separated from the lower mold. Similarly, the power shaft drives the slide rod to move away from the building block. Through the elastic force of the spring sheet, the pull rod flips along the axis of the pin shaft, so that the building block conflicts with the fixed bar, so that the middle mold cannot move away from the lower mold, thereby achieving the purpose of improving practicality.

[0007] As a preferred solution of the present invention, the conduction component includes a guide slope and a conduction rod, the conduction rod is connected to the step block, the guide slope is provided on the slide rod, and the guide slope is used to abut against the outer wall of the conduction rod.

[0008] To implement the above technical solution, the power shaft drives the slide bar to move toward the building block, so that the guide slope contacts the conduction rod, and the conduction rod moves along the length direction of the guide slope, so that the conduction rod drives the building block to move away from the fixed bar.

[0009] As a preferred solution of the present invention, a connecting seat is connected to the side wall of the upper mold, and a guiding groove for the movement of the sliding rod is provided on the connecting seat.

[0010] To implement the above technical solution, the power shaft drives the slide bar to move along the length direction of the guide groove, so that the movement of the slide bar is more stable and less likely to swing.

[0011] As a preferred solution of the present invention, the connecting seat is connected with a first travel switch and a second travel switch, the sliding rod is connected with a first gear rod and a second gear rod, the first gear rod is used to interfere with the first travel switch, and the second gear rod is used to interfere with the second travel switch, and the first travel switch and the second travel switch are both electrically connected to the power cylinder.

[0012] To implement the above technical solution, the power shaft drives the sliding rod to move in the direction approaching the building block. After the building block is separated from the fixed bar, the second gear lever conflicts with the second stroke switch, and the power cylinder stops working. Similarly, the power shaft drives the sliding rod to move in the direction away from the building block. After the building block conflicts with the fixed bar, the first gear lever conflicts with the first stroke switch, and the power cylinder stops working, thereby realizing the function of limiting the telescopic length of the power shaft.

[0013] As a preferred solution of the present invention, an anti-slip plate is connected to the connecting seat, and an accommodating cavity for limiting the sliding rod is formed between the anti-slip plate and the guide groove.

[0014] To implement the above technical solution, the slide bar cannot be separated from the guide groove through the limiting effect of the anti-slip plate, so that the slide bar moves more smoothly.

[0015] As a preferred solution of the present invention, a connecting disk is rotatably connected to the power shaft, a T-shaped connecting groove is provided on the slide rod, the connecting disk is rotatably connected to the connecting groove, a connecting structure for driving the connecting disk to rotate is provided on the connecting seat, the first gear rod is rotatably connected to the slide rod through a connecting shaft, the connecting disk rotates and drives the connecting shaft to rotate through a connecting assembly, a positioning column is slidably connected to the slide rod, a positioning groove is provided on the side wall of the middle mold, the connecting shaft rotates and the positioning column is inserted into the positioning groove through a linkage structure.

[0016] To implement the above technical solution, the power shaft drives the slide rod to move away from the block through the connecting disk. Under the premise that the first stroke switch fails, after the first gear lever conflicts with the first stroke switch, the connecting disk continues to drive the slide rod to move away from the block. At this time, the connecting disk is rotated through the connecting structure. When the connecting disk rotates, the connecting shaft is driven to rotate through the connecting assembly, so that the connecting shaft drives the first gear lever to rotate, and the first gear lever is separated from the first stroke switch. When the connecting shaft rotates, the positioning column is inserted into the positioning groove through the linkage structure, so that the slide rod is fixedly connected to the middle mold through the positioning column. At this time, the lower mold, the middle mold and the upper mold cannot be separated, so as to achieve the purpose of facilitating the transportation and installation of the mold.

[0017] As a preferred solution of the present invention, the connection structure includes an arc groove and a convex column, the arc groove is opened on the outer wall of the connecting plate, and the convex column is fixed on the inner wall of the guide groove and is used for sliding connection in the arc groove.

[0018] To implement the above technical solution, the power shaft moves away from the block, the boss is placed in the arc groove, and the boss contacts the inner wall of the arc groove, so that the connecting disk can rotate during the axial movement of the connecting disk along the power shaft.

[0019] As a preferred solution of the present invention, the connecting assembly includes a spur shaft, a first gear, and a second gear. The spur shaft is rotatably connected to the sliding rod, one end of the spur shaft is fixedly connected to the connecting plate, the other end of the spur shaft is fixedly connected to the first gear, and the second gear is fixed on the connecting shaft and meshes with the first gear.

[0020] To implement the above technical solution, when the connecting disk rotates, the connecting disk drives the straight shaft to rotate, and the straight shaft drives the second gear to rotate through the first gear, so that the second gear drives the first gear lever to rotate through the connecting shaft.

[0021] As a preferred solution of the present invention, the linkage structure includes a screw sleeve, a straight groove, and a linkage rod. The straight groove is opened on the sliding rod. The screw sleeve is rotatably connected to the sliding rod and is threadedly connected to the positioning column. One end of the linkage rod is fixedly connected to the positioning column, and the other end of the linkage rod is slidably connected to the straight groove. The length direction of the straight groove is parallel to the axial direction of the positioning column, and the screw sleeve is fixedly connected to the connecting shaft.

[0022] To implement the above technical solution, the connecting shaft drives the screw sleeve to rotate, and the screw sleeve causes the positioning column to move along its own length direction through the conduction of the thread. At the same time, the linkage rod moves along the length direction of the straight groove, and the positioning column penetrates into the positioning groove, and contacts the positioning column through the inner wall of the positioning groove, so that the upper mold and the middle mold are not easy to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 A schematic diagram showing the position of the anti-slip plate;

[0025] Figure 3 A schematic diagram showing the structure of the connection components;

[0026] Figure 4 To reflect the structural schematic diagram of the screw sleeve;

[0027] Figure 5 To show the location diagram of the straight slot;

[0028] Figure 6 It is a structural schematic diagram of the positioning groove.

[0029] 1. The upper die; 12. The middle die; 121. The fixing recess; 13. The lower die; 21. The power cylinder; 22. The slide rod; 23. The pull rod; 24. The fixing strip; 25. The fixing block; 26. The spring piece; 3. The transmission component; 31. The guiding slope; 32. The transmission rod; 33. The stepping block; 4. The connecting seat; 41. The guiding groove; 42. The anti-drop plate; 51. The first stroke switch; 52. The second stroke switch; 53. The first shift rod; 54. The second shift rod; 61. The connecting plate; 62. The connecting groove; 7. The connecting structure; 71. The arc groove; 72. The boss; 8. The connecting component; 81. The straight shaft; 82. The first gear; 83. The second gear; 84. The connecting shaft; 9. The linkage structure; 91. The screw sleeve; 92. The straight groove; 93. The linkage rod; 94. The positioning column; 95. The positioning groove. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0031] A mold release and clamping structure for an injection molding mold of an automobile lens includes a power cylinder 21, a slide bar 22, a pull rod 23, a fixing bar 24, a fixing block 25 and a spring 26. A fixing concave hole 121 is provided on the side wall of a middle mold 12, and the fixing bar 24 is fixed in the fixing concave hole 121. The power cylinder 21 is fixed on the side wall of an upper mold 11, and the power cylinder 21 is an air cylinder. The slide bar 22 is connected to the power shaft of the power cylinder 21.

[0032] The fixing block 25 is fixed to the side wall of the lower mold 13, one end of the pull rod 23 is hinged to the fixing block 25 through a pin, and the other end of the pull rod 23 extends toward the direction close to the slide rod 22. A stepping block 33 is fixedly connected to the end of the pull rod 23 close to the slide rod 22. The two pull rods 23 are respectively located on both sides of the slide rod 22. One end of the spring sheet 26 is fixed to the positioning block through a screw, and the other end of the spring sheet 26 contacts the pull rod 23. The spring sheet 26 always applies elastic force to the pull rod 23, so that the pull rod 23 has a tendency to move toward the direction close to the middle mold 12.

[0033] The sliding rod 22 moves toward the pull rod 23 and separates the block 33 from the fixing bar 24 through the conducting component 3 .

[0034] The conducting assembly 3 includes a guiding slope 31 and a conducting rod 32. The conducting rod 32 is fixedly connected to the block 33. The guiding slope 31 is provided on the slide bar 22, and the guiding slope 31 is used to contact the outer wall of the conducting rod 32. The conducting rod 32 is cylindrical.

[0035] When the power cylinder 21 is in the state of being moved, the power shaft drives the slide bar 22 to move downward along its length direction, the guide slope 31 contacts the transmission rod 32, and the block 33 is separated from the fixed bar 24 through the transmission rod 32. When the slide bar 22 moves upward, the transmission rod 32 and the guide slope 31 are gradually separated, and the elastic force of the spring sheet 26 causes the block 33 to contact the fixed bar 24, so that the middle mold 12 and the lower mold 13 are not easily separated by moving along the height direction.

[0036] A connecting seat 4 is fixedly connected to the side wall of the upper mold 11, and a guide groove 41 for the movement of the slide bar 22 is provided on the connecting seat 4, so that the slide bar 22 can move more smoothly. An anti-drop plate 42 is fixedly connected to the connecting seat 4 by screws, and a receiving cavity for limiting the slide bar 22 is formed between the anti-drop plate 42 and the guide groove 41, so that the slide bar 22 is not easily detached from the connecting seat 4.

[0037] A first travel switch 51 and a second travel switch 52 are fixedly connected to the side of the connecting seat 4 facing away from the upper mold 11. A first gear rod 53 and a second gear rod 54 are provided on the slide bar 22, the second gear rod 54 is fixedly connected to the slide bar 22, and the first gear rod 53 is rotatably connected to the slide bar 22 through a connecting shaft 84. Damping ester is coated between the connecting shaft 84 and the slide bar 22 so that there is a certain friction between the connecting shaft 84 and the slide bar 22. The first gear rod 53 is used to conflict with the first travel switch 51, and the second gear rod 54 is used to conflict with the second travel switch 52. The first travel switch 51 and the second travel switch 52 are both electrically connected to the power cylinder 21.

[0038] The first stopper 53 and the second stopper 54 are respectively located at the lower and upper sides of the anti-slip plate 42 .

[0039] The slide bar 22 moves downward, and after the block 33 separates from the fixed bar 24, the second stopper contacts the second travel switch 52, and the second travel switch 52 sends an electrical signal to the power cylinder 21, and the power cylinder 21 stops. The slide bar 22 moves upward, and after the block 33 contacts the fixed bar 24, the first stopper contacts the first travel switch 51, and the first travel switch 51 sends an electrical signal to the power cylinder 21, and the power cylinder 21 stops.

[0040] A connecting plate 61 is rotatably connected to the power shaft, and a damping agent is provided between the connecting plate 61 and the power shaft to prevent the connecting plate 61 from rotating at will. The connecting plate 61 is coaxially arranged with the power shaft. A T-shaped connecting groove 62 is provided on the slide bar 22, and the connecting plate 61 is rotatably connected to the connecting groove 62. When the power shaft moves, the upper end face and the lower end face of the connecting groove 62 collide with the inner wall of the connecting groove 62, so that the slide bar 22 moves.

[0041] A connection structure 7 for driving the connection disk 61 to rotate is provided on the connection seat 4. The connection structure 7 includes an arc groove 71 and a convex column 72. The arc groove 71 is provided on the outer wall of the connection disk 61, and the arc groove 71 is coaxially arranged with the connection disk 61. The convex column 72 is fixed on the inner wall of the guide groove 41 and is used for sliding connection in the arc groove 71.

[0042] After the conducting rod 32 is separated from the guiding inclined surface 31 , the sliding rod 22 continues to move upward, the boss 72 is placed in the arc groove 71 , and the boss 72 abuts against the inner wall of the arc groove 71 , so that the connecting disk 61 rotates.

[0043] The connecting disk 61 rotates and drives the connecting shaft 84 to rotate through the connecting assembly 8, and a receiving cavity is provided on the slide bar 22. The connecting assembly 8 includes a straight shaft 81, a first gear 82, and a second gear 83. The straight shaft 81 is rotatably connected to the slide bar 22 and passes through the receiving cavity. One end of the straight shaft 81 is fixedly connected to the connecting disk 61, and the other end of the straight shaft 81 is fixedly connected to the first gear 82. The connecting disk 61, the straight shaft 81, and the first gear 82 are coaxially arranged. The second gear 83 is fixed on the connecting shaft 84 and meshes with the first gear 82. The second gear 83 is coaxially arranged with the connecting shaft 84.

[0044] During the rotation of the connecting plate 61, the first gear 82 is driven to rotate by the straight shaft 81, the first gear 82 drives the second gear 83 to rotate, and the second gear 83 drives the connecting shaft 84 to rotate, thereby preventing the first gear 53 from breaking due to excessive pressure between the first gear 53 and the first travel switch 51. After the first gear 53 is separated from the first travel switch 51, it recovers due to its own elasticity.

[0045] A cylindrical positioning column 94 is slidably connected to the slide bar 22, and a positioning groove 95 is provided on the side wall of the middle mold 12. The positioning groove 95 is a waist-shaped groove, so that there is enough space between the positioning column 94 and the positioning groove 95, and the connecting shaft 84 rotates and allows the positioning column 94 to penetrate into the positioning groove 95 through the linkage structure 9.

[0046] The linkage structure 9 comprises a screw sleeve 91, a straight groove 92 and a linkage rod 93. The straight groove 92 is provided on the slide bar 22, and the length direction of the straight groove 92 is parallel to the axial direction of the positioning column 94. The screw sleeve 91 is rotatably connected to the slide bar 22 through a bearing and is located in the accommodating cavity. The positioning column 94 is located inside the screw sleeve 91, and the positioning column 94 is threadedly connected to the screw sleeve 91.

[0047] One end of the linkage rod 93 is fixedly connected to the positioning column 94, and the other end of the linkage rod 93 is slidably connected to the straight groove 92. The length direction of the straight groove 92 is parallel to the axial direction of the positioning column 94, the screw sleeve 91 is fixedly connected to the connecting shaft 84, and the screw sleeve 91 and the connecting shaft 84 are coaxially arranged.

[0048] During the rotation of the connecting shaft 84, the connecting shaft 84 drives the screw sleeve 91 to rotate. During the rotation of the screw sleeve 91, the positioning column 94 moves along its own axial direction through the conduction effect of the thread and the contact between the linkage rod 93 and the inner wall of the straight groove 92, so that the positioning column 94 penetrates into the positioning groove 95. At this time, since the block 33 contacts the positioning bar, the middle mold 12 is not easy to separate from the lower mold 13, the positioning column 94 is partially located in the positioning groove 95, and the upper mold 11 is not easy to separate from the middle mold 12, so that the entire mold is not easy to separate, so as to facilitate transportation.

[0049] Similarly, the power cylinder 21 is turned on to move the slide bar 22 downward, so that the positioning column 94 can be pulled out from the positioning groove 95. At the same time, the first stopper 53 is reset, and the upper mold 11 can be separated from the middle mold 12. The slide bar 22 continues to move downward to separate the block 33 from the fixing bar 24, so that the middle mold 12 and the lower mold 13 can be separated.

[0050] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A mold release and clamping structure for an injection molding mold of an automobile light distribution mirror, characterized in that: The invention comprises a power cylinder (21), a sliding rod (22), a pulling rod (23), a fixing bar (24), a fixing block (25) and a spring sheet (26), wherein the fixing bar (24) is fixed on the side wall of the middle mold (12), the power cylinder (21) is connected to the side wall of the upper mold (11), the sliding rod (22) is connected to the power shaft of the power cylinder (21), the fixing block (25) is fixed on the side wall of the lower mold (13), one end of the pulling rod (23) is hinged to the fixing block (25) through a pin shaft 25), the other end of the pull rod (23) extends in a direction close to the slide bar (22), one end of the spring sheet (26) is connected to the fixed block (25), and the other end of the spring sheet (26) is connected to the pull rod (23), and the end of the pull rod (23) close to the slide bar (22) is provided with a block (33) for connecting to the fixed bar (24), and the slide bar (22) moves in a direction close to the pull rod (23) and separates the block (33) from the fixed bar (24) through the conduction component (3).

2. The mold release and clamping structure of the automobile lens injection molding mold according to claim 1 is characterized in that: The conduction component (3) comprises a guide slope (31) and a conduction rod (32), wherein the conduction rod (32) is connected to the step (33), the guide slope (31) is arranged on the slide rod (22), and the guide slope (31) is used to abut against the outer wall of the conduction rod (32).

3. The mold release and clamping structure of the automobile lens injection molding mold according to claim 2 is characterized in that: A connecting seat (4) is connected to the side wall of the upper mold (11), and a guiding groove (41) for the movement of the sliding rod (22) is provided on the connecting seat (4).

4. The mold release and clamping structure of the automobile lens injection molding mold according to claim 3 is characterized in that: The connecting seat (4) is connected to a first travel switch (51) and a second travel switch (52); the sliding rod (22) is connected to a first gear rod (53) and a second gear rod (54); the first gear rod (53) is used to contact the first travel switch (51); the second gear rod (54) is used to contact the second travel switch (52); the first travel switch (51) and the second travel switch (52) are both electrically connected to the power cylinder (21).

5. The mold release and clamping structure of the automobile lens injection molding mold according to claim 3 is characterized by: The connection seat (4) is connected to an anti-slip plate (42), and an accommodating cavity for limiting the position of the slide rod (22) is formed between the anti-slip plate (42) and the guide groove (41).

6. The mold release and clamping structure of the automobile lens injection molding mold according to claim 4 is characterized in that: A connecting disk (61) is rotatably connected to the power shaft, a T-shaped connecting groove (62) is provided on the slide bar (22), the connecting disk (61) is rotatably connected to the connecting groove (62), a connecting seat (4) is provided with a connecting structure (7) for driving the connecting disk (61) to rotate, the first gear rod (53) is rotatably connected to the slide bar (22) through a connecting shaft (84), the connecting disk (61) rotates and drives the connecting shaft (84) to rotate through a connecting assembly (8), a positioning column (94) is slidably connected to the slide bar (22), a positioning groove (95) is provided on the side wall of the middle mold (12), the connecting shaft (84) rotates and allows the positioning column (94) to penetrate into the positioning groove (95) through a linkage structure (9).

7. The mold release and clamping structure of the automobile lens injection molding mold according to claim 6 is characterized in that: The connection structure (7) comprises an arc groove (71) and a convex column (72), wherein the arc groove (71) is formed on the outer wall of the connection plate (61), and the convex column (72) is fixed on the inner wall of the guide groove (41) and is used for sliding connection in the arc groove (71).

8. The mold release and clamping structure of the automobile lens injection molding mold according to claim 7 is characterized in that: The connecting assembly (8) comprises a straight shaft (81), a first gear (82), and a second gear (83); the straight shaft (81) is rotatably connected to the slide bar (22); one end of the straight shaft (81) is fixedly connected to the connecting plate (61); the other end of the straight shaft (81) is fixedly connected to the first gear (82); and the second gear (83) is fixed to the connecting shaft (84) and meshes with the first gear (82).

9. The mold release and clamping structure of the automobile lens injection molding mold according to claim 8 is characterized in that: The linkage structure (9) comprises a screw sleeve (91), a straight groove (92), and a linkage rod (93); the straight groove (92) is provided on the slide rod (22); the screw sleeve (91) is rotatably connected to the slide rod (22) and is threadedly connected to the positioning column (94); one end of the linkage rod (93) is fixedly connected to the positioning column (94); the other end of the linkage rod (93) is slidably connected to the straight groove (92); the length direction of the straight groove (92) is parallel to the axial direction of the positioning column (94); and the screw sleeve (91) is fixedly connected to the connecting shaft (84).

Images