Stamping die easy to demould

Abstract

The utility model discloses a stamping die easy to demould, which belongs to the technical field of dies and comprises a lower die and an upper die. The lower die is connected with the upper die; the lower mold is connected with an automatic demolding assembly; the upper mold is connected with a locking assembly; and the lower die is connected with the locking assembly. The injection molding liquid is poured into the lower mold, the upper end of the positioning rod is inserted into the upper mold, the upper mold and the lower mold are fixed through the locking assembly and the positioning rod, the injection molding liquid is cooled through the condensation pipe to form a workpiece, the upper mold is taken out, and the output end of the air cylinder pushes the sliding block to move upwards under the limiting and guiding effects of the sliding rail. The sliding block drives the ejection block to move upwards, the ejection block ejects the workpiece upwards, and the output power of the air cylinder can be adjusted according to the weight of the workpiece, so that the device is suitable for workpieces with different weights, and the situation that the workpiece is ejected out of the lower die to fall off due to too large ejection force or the situation that the workpiece cannot be ejected out due to insufficient ejection force is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a stamping mold which is easy to demould. Background Art

[0002] The injection molding process mainly includes six processes: mold closing, filling, pressure holding, cooling, mold opening, and demolding. Injection molded products are generally produced by demolding after at least two molds are combined and processed.

[0003] For example, Chinese patent CN220808334U proposes a mold, including an upper mold frame, a lower mold frame, and an upper mold and a lower mold respectively located on the upper mold frame and the lower mold frame, the upper mold and the lower mold are combined to form an injection cavity, the upper mold frame is provided with an injection port connected to the injection cavity, the upper mold is provided with a connected center groove and an energy storage groove, the center groove is connected to the injection cavity, the energy storage groove is connected to the contact surface of the upper mold and the lower mold, a top block and an energy storage block are respectively slid in the center groove and the energy storage groove, the top block protrudes toward the injection cavity, one end of the top block is connected to the energy storage block, a spring for driving the top block and the energy storage block to move toward the lower mold is also provided in the center groove and the energy storage groove, when the upper mold and the lower mold are against each other, the spring is compressed so that the top block does not protrude from the injection cavity, and a top column for demolding the lower mold is also provided on the lower mold.

[0004] However, in the above patent, the elastic restoring force of the spring is used to eject the formed workpiece, and the ejection force is uneven. The force may be too strong and the workpiece may fall out of the lower mold, or the force may be insufficient and the workpiece may not be ejected.

[0005] Based on this, the utility model designs a stamping die that is easy to demould to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a stamping die which is easy to demould.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A stamping die that is easy to demould comprises a lower die and an upper die;

[0009] The lower mold is connected to the upper mold;

[0010] The lower mold is connected to a plurality of groups of front-to-back symmetrical automatic demoulding components;

[0011] The upper mold is connected to a plurality of groups of front-to-back symmetrical locking components;

[0012] The lower mold is connected to the locking assembly;

[0013] The automatic demoulding assembly includes an inclined plate, a connecting plate, a cylinder, a slide rail, a slider and an ejection block. The lower mold is fixedly connected with a left-right symmetrical inclined plate, a connecting plate is fixedly connected between the two groups of inclined plates, a cylinder is fixedly connected with the connecting plate, the output end of the cylinder is slidably connected to the connecting plate, the inner side of the inclined plate is fixedly connected with a slide rail, the slide rail is limitedly slidably connected with a slider, the slider is fixedly connected to the ejection block, and the output end of the cylinder is fixedly connected to the slider.

[0014] Furthermore, a workpiece is clamped between the lower mold and the upper mold.

[0015] Furthermore, the automatic demoulding component is connected to the workpiece.

[0016] Furthermore, the ejector block is in contact with and connected to the workpiece.

[0017] Furthermore, a plurality of groups of condensation tubes are fixedly connected between the lower mold and the upper mold.

[0018] Furthermore, a positioning rod is fixedly connected to the lower mold, and the upper end of the positioning rod is limitedly inserted into the interior of the upper mold.

[0019] Furthermore, the locking assembly includes a first mounting column, a connecting rod, a second mounting column, a rotating shaft, a convex ring, a first curved hook, a second curved hook and a third curved hook. The upper mold is fixedly connected with the first mounting column, the connecting rod is fixedly connected with the first mounting column, the lower end of the connecting rod is rotatably connected with the hook body through the rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the connecting rod, and the other end of the torsion spring is connected to the hook body, the lower mold is fixedly connected with the second mounting column, the outer side of the second mounting column is fixedly connected with a convex ring, and the inner side of the hook body is connected to the second mounting column and the convex ring.

[0020] Furthermore, the hook body includes a first hook, a second hook and a third hook, the first hook and the second hook are fixedly connected, the second hook and the third hook are fixedly connected, one end of the torsion spring is in contact with the second hook, the inner side of the second hook is in contact with the outer side of the convex ring, and the first hook and the third hook are respectively in contact with the second mounting columns located on the front and rear sides of the convex ring.

[0021] The utility model has the following technical effects:

[0022] 1. The utility model pours the injection liquid into the lower mold, inserts the upper end of the positioning rod into the interior of the upper mold, fixes the upper mold and the lower mold by the locking assembly and the positioning rod, cools the injection liquid by the condenser to form a workpiece, then takes the upper mold out from the upper end, starts the cylinder, and the output end of the cylinder pushes the slider to move upward under the limiting guide action of the slide rail, the slider drives the ejection block to move upward, and the ejection block ejects the workpiece upward, and the output power of the cylinder can be adjusted according to the weight of the workpiece, so as to adapt to workpieces of different weights, avoid the situation that the workpiece is ejected from the lower mold and falls due to excessive ejection force, or the situation that the workpiece cannot be ejected due to insufficient force, and at the same time, the speed of the output end of the cylinder is moderate, avoids the situation that the workpiece is squeezed and deformed due to excessive speed.

[0023] 2. The utility model pours the injection liquid into the lower mold, rotates the second hook around the rotating shaft to the side away from the second mounting column, the second hook drives the first hook and the third hook to rotate to the side away from the second mounting column, and the upper end of the positioning rod is inserted into the interior of the upper mold. At this time, the second hook is no longer rotated, and the elastic restoring force of the torsion spring drives the first hook and the third hook to rotate around the rotating shaft to the side close to the second mounting column through the second hook. When the first hook and the second hook are in contact with the second mounting column and the convex ring respectively, the second hook stops rotating, thereby achieving the effect of locking the lower mold and the upper mold; avoiding relative displacement between the lower mold and the upper mold during the injection molding process, thereby affecting the molding effect of the workpiece; when the workpiece is cooled and formed, the second hook is rotated around the rotating shaft to the side away from the second mounting column until the second hook is separated from the convex ring, and the upper mold is moved upward, and the upper mold drives the first hook, the second hook and the third hook to move upward through the first mounting column and the connecting rod, thereby achieving the separation of the lower mold and the upper mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A three-dimensional diagram of a stamping die that is easy to demould according to the utility model;

[0026] Figure 2 It is a front view of a stamping die that is easy to demould according to the utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of a stamping die that is easy to demould according to the utility model;

[0028] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0029] The numbers in the figure represent:

[0030] 1. Lower mold; 2. Upper mold; 3. Automatic demoulding assembly; 31. Inclined plate; 32. Connecting plate; 33. Cylinder; 34. Slide rail; 35. Slider; 36. Ejector block; 4. Locking assembly; 41. First mounting column; 42. Connecting rod; 43. Second mounting column; 44. Rotating shaft; 45. Convex ring; 46. First hook; 47. Second hook; 48. Third hook; 5. Workpiece; 6. Positioning rod; 7. Condenser. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The utility model is further described below in conjunction with embodiments.

[0033] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0034] In some embodiments, please refer to the attached instructions. Figure 1-4 , a stamping die that is easy to demould, comprising a lower die 1 and an upper die 2;

[0035] The lower mold 1 is connected to the upper mold 2;

[0036] The lower mold 1 is connected to a plurality of groups of front-to-back symmetrical automatic demoulding components 3;

[0037] The upper mold 2 is connected to a plurality of groups of front-to-back symmetrical locking components 4;

[0038] The lower mold 1 is connected to the locking assembly 4;

[0039] The automatic demoulding assembly 3 includes an inclined plate 31, a connecting plate 32, a cylinder 33, a slide rail 34, a slider 35 and an ejection block 36. The lower mold 1 is fixedly connected with a left-right symmetrical inclined plate 31, a connecting plate 32 is fixedly connected between two groups of inclined plates 31, a cylinder 33 is fixedly connected to the connecting plate 32, an output end of the cylinder 33 is limitedly slidably connected to the connecting plate 32, a slide rail 34 is fixedly connected to the inner side of the inclined plate 31, a slider 35 is limitedly slidably connected to the slide rail 34, the slider 35 is fixedly connected to the ejection block 36, and the output end of the cylinder 33 is fixedly connected to the slider 35;

[0040] A workpiece 5 is connected between the lower mold 1 and the upper mold 2;

[0041] The automatic demoulding component 3 is connected to the workpiece 5;

[0042] The ejector block 36 is in contact with the workpiece 5;

[0043] A plurality of groups of condensation tubes 7 are fixedly connected between the lower mold 1 and the upper mold 2;

[0044] The lower mold 1 is fixedly connected with a positioning rod 6, and the upper end of the positioning rod 6 is limitedly inserted into the interior of the upper mold 2;

[0045] The injection molding liquid is poured into the lower mold 1, and the upper end of the positioning rod 6 is inserted into the interior of the upper mold 2. The upper mold 2 and the lower mold 1 are fixed by the locking assembly 4 and the positioning rod 6. The injection molding liquid is cooled by the condenser 7 to form a workpiece 5. At this time, the upper mold 2 is taken out from the upper end, and the cylinder 33 is started. The output end of the cylinder 33 pushes the slider 35 to move upward under the limiting guide action of the slide rail 34. The slider 35 drives the ejection block 36 to move upward, and the ejection block 36 ejects the workpiece 5 upward. The output power of the cylinder 33 can be adjusted according to the weight of the workpiece 5, so as to adapt to workpieces 5 of different weights, so as to avoid the situation that the workpiece 5 is ejected from the lower mold due to excessive ejection force, or the situation that the workpiece 5 cannot be ejected due to insufficient force. At the same time, the output end speed of the cylinder 33 is moderate to avoid the situation that the workpiece 5 is squeezed and deformed due to excessive speed.

[0046] The locking assembly 4 includes a first mounting post 41, a connecting rod 42, a second mounting post 43, a rotating shaft 44, a convex ring 45, a first curved hook 46, a second curved hook 47 and a third curved hook 48. The first mounting post 41 is fixedly connected to the upper mold 2, the connecting rod 42 is fixedly connected to the first mounting post 41, the lower end of the connecting rod 42 is rotatably connected to the hook body through the rotating shaft 44, a torsion spring is sleeved on the rotating shaft 44, one end of the torsion spring is in contact with the connecting rod 42, and the other end of the torsion spring is in contact with the hook body, the second mounting post 43 is fixedly connected to the lower mold 1, the outer side of the second mounting post 43 is fixedly connected to the convex ring 45, and the inner side of the hook body is connected to the second mounting post 43 and the convex ring 45;

[0047] The hook body includes a first hook 46, a second hook 47 and a third hook 48, the first hook 46 and the second hook 47 are fixedly connected, the second hook 47 and the third hook 48 are fixedly connected, one end of the torsion spring is in contact with the second hook 47, the inner side of the second hook 47 is in contact with the outer side of the convex ring 45, and the first hook 46 and the third hook 48 are in contact with the second mounting column 43 located at the front and rear sides of the convex ring 45 respectively;

[0048] The injection liquid is poured into the lower mold 1, and the second hook 47 is rotated around the rotating shaft 44 to the side away from the second mounting column 43. The second hook 47 drives the first hook 46 and the third hook 48 to rotate to the side away from the second mounting column 43. The upper end of the positioning rod 6 is inserted into the interior of the upper mold 2. At this time, the second hook 47 is no longer rotated. The elastic restoring force of the torsion spring drives the first hook 46 and the third hook 48 to rotate around the rotating shaft 44 to the side close to the second mounting column 43 through the second hook 47. When the first hook 46 and the second hook 47 are in contact with the second mounting column 43 and the convex ring 45 respectively, The second hook 47 stops rotating, thereby achieving the effect of locking the lower mold 1 and the upper mold 2; avoiding relative displacement between the lower mold 1 and the upper mold 2 during the injection molding process, thereby affecting the molding effect of the workpiece 5; when the workpiece 5 is cooled and formed, the second hook 47 is rotated around the rotating shaft 44 to the side away from the second mounting column 43 until the second hook 47 is disengaged from the convex ring 45, and the upper mold 2 is moved upward. The upper mold 2 drives the first hook 46, the second hook 47 and the third hook 48 to move upward through the first mounting column 41 and the connecting rod 42, thereby achieving the separation of the lower mold 1 and the upper mold 2.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stamping die that is easy to demould, comprising a lower die (1) and an upper die (2), characterized in that: The lower mold (1) and the upper mold (2) are connected; The lower mold (1) is connected to a plurality of groups of front-to-back symmetrical automatic demoulding components (3); The upper mold (2) is connected to a plurality of groups of front-to-back symmetrical locking components (4); The lower mold (1) is connected to a locking assembly (4); The automatic demoulding component (3) comprises an inclined plate (31), a connecting plate (32), a cylinder (33), a slide rail (34), a slider (35) and an ejection block (36); the lower mold (1) is fixedly connected with a left-right symmetrical inclined plate (31); a connecting plate (32) is fixedly connected between two groups of inclined plates (31); a cylinder (33) is fixedly connected to the connecting plate (32); an output end of the cylinder (33) is slidably connected to the connecting plate (32); the inner side of the inclined plate (31) is fixedly connected with a slide rail (34); a slider (35) is limitedly slidably connected to the slide rail (34); the slider (35) is fixedly connected to the ejection block (36); and the output end of the cylinder (33) is fixedly connected to the slider (35).

2. The stamping die that is easy to demould according to claim 1, characterized in that: A workpiece (5) is clamped between the lower mold (1) and the upper mold (2).

3. The stamping die that is easy to demould according to claim 2, characterized in that: The automatic demoulding component (3) is connected to the workpiece (5).

4. The stamping die that is easy to demould according to claim 3, characterized in that: The ejection block (36) is in contact with and connected to the workpiece (5).

5. The stamping die that is easy to demould according to claim 4, characterized in that: A plurality of groups of condensation tubes (7) are fixedly connected between the lower mold (1) and the upper mold (2).

6. The stamping die that is easy to demould according to claim 5, characterized in that: A positioning rod (6) is fixedly connected to the lower mold (1), and the upper end of the positioning rod (6) is limitedly inserted into the interior of the upper mold (2).

7. The stamping die that is easy to demould according to claim 6, characterized in that: The locking assembly (4) comprises a first mounting column (41), a connecting rod (42), a second mounting column (43), a rotating shaft (44), a convex ring (45), a first curved hook (46), a second curved hook (47) and a third curved hook (48); the first mounting column (41) is fixedly connected to the upper mold (2); the connecting rod (42) is fixedly connected to the first mounting column (41); the lower end of the connecting rod (42) is rotatably connected to a hook body via a rotating shaft (44); a torsion spring is sleeved on the rotating shaft (44); one end of the torsion spring is abutted against the connecting rod (42); the other end of the torsion spring is abutted against the hook body; the second mounting column (43) is fixedly connected to the lower mold (1); the outer side of the second mounting column (43) is fixedly connected to a convex ring (45); the inner side of the hook body is connected to the second mounting column (43) and the convex ring (45).

8. The stamping die that is easy to demould according to claim 7, characterized in that: The hook body comprises a first hook (46), a second hook (47) and a third hook (48); the first hook (46) and the second hook (47) are fixedly connected; the second hook (47) and the third hook (48) are fixedly connected; one end of the torsion spring is in contact with the second hook (47); the inner side of the second hook (47) is in contact with the outer side of the convex ring (45); the first hook (46) and the third hook (48) are in contact with the second mounting column (43) located at the front and rear sides of the convex ring (45), respectively.

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