Lower die three-unit die withdrawing structure

Abstract

The utility model discloses a lower mold three-unit demolding structure which comprises a first bearing plate, a second bearing plate, a third bearing plate and a third bearing plate. An air cylinder is installed on the side of the first bearing plate, the output end of the air cylinder is in transmission connection with a two-way pulling piece and a shifting mechanism, one end of the two-way pulling piece is connected with a first demolding unit, the first demolding unit is installed on the first bearing plate, the other end of the two-way pulling piece is connected with a second demolding unit, and the second demolding unit is installed on the second bearing plate. And the third demolding unit is movably mounted on the second bearing plate. According to the utility model, the arrangement mode that the air cylinder is matched with the bidirectional pulling piece is utilized, and the moving demolding process of the first demolding unit, the second demolding unit and the third demolding unit is simultaneously completed through the operation of one air cylinder, so that the use number of the air cylinders is reduced, and the cost is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of mold withdrawal structures, in particular to a lower mold three-unit mold withdrawal structure. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Injection molding machine is a device used to form products such as synthetic resin materials. Usually, the injection molding machine forms the product in the form of melted sheets or powders and puts it into a mold with a predetermined shape. There are various types of injection molding machines, from small machines to large machines.

[0003] When performing demolding operation on an injection mold, it is generally necessary to open the mold first, remove the upper mold, and then demold the molded part inside the lower mold cavity. In the prior art, a cylinder is generally used to drive the module to perform linear motion to realize demolding of the module to avoid the molded part sticking to the module and being difficult to remove. However, when there are multiple modules on the lower mold, multiple cylinders are required to control and move them, which increases the demolding cost. Utility Model Content

[0004] The utility model aims to provide a three-unit demoulding structure for a lower mold to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-unit demoulding structure of a lower mold, comprising:

[0006] a first carrying plate, a second carrying plate being mounted on a surface of the first carrying plate;

[0007] A cylinder is installed on the side of the first bearing plate, and the output end of the cylinder is transmission-connected with a bidirectional pulling member and a toggle mechanism, one end of the bidirectional pulling member is connected with a first mold ejection unit, and the first mold ejection unit is installed on the first bearing plate, the other end of the bidirectional pulling member is connected with a second mold ejection unit, and the second mold ejection unit is installed on the second bearing plate, and the third mold ejection unit is movably installed on the second bearing plate.

[0008] Preferably, a fixing frame is installed on the side of the first bearing plate, the cylinder is installed on the fixing frame, the output end of the fixing frame is transmission-connected with a coupling seat, the middle part of the two-way linkage arm is clamped and installed on the top of the coupling seat, and one end of the toggle mechanism is connected to the coupling seat.

[0009] Preferably, the bidirectional pulling member comprises:

[0010] A two-way linkage arm, wherein the two arms of the two-way linkage arm are unfolded in an eight-shaped manner;

[0011] A first guide groove, which is provided at one end of the bidirectional linkage arm, and cooperates with the first demoulding unit;

[0012] The second guide groove is arranged at the other end of the bidirectional linkage arm, and the first guide groove cooperates with the second demoulding unit.

[0013] Preferably, the first demoulding unit comprises:

[0014] A first limiting plate, wherein the first limiting plate is installed on the upper surface of the first bearing plate;

[0015] A first module, wherein the first module is slidably mounted on the top of the first limiting plate;

[0016] A first sliding frame, wherein the first sliding frame is slidably mounted on the first bearing plate, and one end of the first sliding frame is connected to the bottom of the first module;

[0017] The first guide post is connected to the other end of the first sliding frame, and the first guide post is slidably and interlacedly connected with the inner cavity of the first guide groove.

[0018] Preferably, the second demoulding unit comprises:

[0019] A second limiting plate, wherein the second limiting plate is mounted on an upper surface of the second bearing plate;

[0020] A second module, wherein the second module is slidably mounted on the top of the second limiting plate;

[0021] A second sliding frame, the second sliding frame is slidably mounted on the second carrying plate, and one end of the second sliding frame is connected to the bottom of the second module;

[0022] The second guide post is connected to the other end of the second sliding frame, and the second guide post is slidably and interlacedly connected with the inner cavity of the second guide groove.

[0023] Preferably, the third demoulding unit comprises a third module, a penetration column is installed at the bottom of the third module, and the penetration column is slidably and penetratedly connected with the second supporting plate.

[0024] Preferably, the toggle mechanism comprises:

[0025] A linear pull rod, the linear pull rod is slidably disposed on the top of the first bearing plate;

[0026] A shift block, which is installed on the top of the linear pull rod and is slidably connected with the second bearing plate;

[0027] A lifting block is in a vertical state and slides and intersects with the second bearing plate, and the lifting block is installed at the bottom of the third module.

[0028] Technical effects and advantages of the utility model:

[0029] The utility model utilizes the setting mode of matching the cylinder and the two-way pulling member, and through the operation of the cylinder, the two-way linkage arm and the linear pull rod are synchronously driven to move, and the two-way linkage arm drives the linear movement of the first guide groove, so that the inner wall of the inclined groove of the first guide groove provides lateral force for the first guide column to squeeze, so that the first sliding frame drives the first module to perform linear movement under the limit of the first bearing plate, and completes the demolding of the first demolding unit. At the same time, under the push of the inner wall of the inclined groove of the second guide groove, the second sliding frame drives the second module to perform linear movement under the limit of the second bearing plate, and completes the demolding of the second demolding unit. At the same time, the linear pull rod pulls the shift block to slide linearly, so that the shift block shifts the lifting block, so that the third demolding unit is lifted a certain distance, so that the movement and demolding process of the first demolding unit, the second demolding unit and the third demolding unit can be completed at the same time through the operation of one cylinder, thereby reducing the number of cylinders used and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0031] Figure 2 It is a schematic diagram of the structure of the bidirectional pulling part of the utility model.

[0032] Figure 3 It is a structural schematic diagram of the first demoulding unit of the utility model.

[0033] Figure 4 This is a schematic diagram of the structure of the second demoulding unit of the utility model.

[0034] Figure 5 This is a schematic structural diagram of the third demoulding unit of the utility model.

[0035] Figure 6 It is a structural schematic diagram of the toggle mechanism of the utility model.

[0036] Figure 7 It is a structural schematic diagram of the jacking block of the utility model.

[0037] Figure 8 This is a structural schematic diagram of the first bearing plate of the utility model.

[0038] In the figure: 1. first bearing plate; 2. second bearing plate; 3. cylinder; 31. fixing frame; 32. coupling seat; 4. bidirectional pulling member; 41. bidirectional linkage arm; 42. first guide groove; 43. second guide groove; 5. toggle mechanism; 51. linear pull rod; 52. toggle block; 53. lifting block; 6. first demolding unit; 61. first limiting plate; 62. first module; 63. first sliding frame; 64. first guide column; 7. second demolding unit; 71. second limiting plate; 72. second module; 73. second sliding frame; 74. second guide column; 8. third demolding unit. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0040] The utility model provides Figure 1-8 A three-unit demolding structure of a lower mold is shown, comprising: a first bearing plate 1, a second bearing plate 2 is installed on the surface of the first bearing plate 1; a cylinder 3 is installed on the side of the first bearing plate 1, and the output end of the cylinder 3 is transmission-connected with a bidirectional pulling member 4 and a toggle mechanism 5, one end of the bidirectional pulling member 4 is connected to a first demolding unit 6, the first demolding unit 6 is installed on the first bearing plate 1, the other end of the bidirectional pulling member 4 is connected to a second demolding unit 7, the second demolding unit 7 is installed on the second bearing plate 2, and a third demolding unit 8 is movably installed on the second bearing plate 2. A fixing frame 31 is installed on the side of the first bearing plate 1, and the cylinder 3 is installed on the fixing frame 31. The output end of the fixing frame 31 is transmission-connected with a coupling seat 32. The middle part of the two-way linkage arm 41 is clamped and installed on the top of the coupling seat 32. One end of the toggle mechanism 5 is connected to the coupling seat 32. The fixing frame 31 is convenient for installing the cylinder 3, and the coupling seat 32 is convenient for synchronous connection with the two-way linkage arm 41 and the linear pull rod 51, so as to synchronously demold the first demolding unit 6, the second demolding unit 7 and the third demolding unit 8.

[0041] Specifically, the bidirectional pulling member 4 includes: a bidirectional linkage arm 41, the two arms of the bidirectional linkage arm 41 are in an eight-shaped unfolded type; a first guide groove 42, the first guide groove 42 is arranged at one end of the bidirectional linkage arm 41, and the first guide groove 42 cooperates with the first demolding unit 6; a second guide groove 43, the second guide groove 43 is arranged at the other end of the bidirectional linkage arm 41, and the first guide groove 42 cooperates with the second demolding unit 7. The first guide groove 42 is composed of an oblique groove and a linear groove. Through the inner wall of the oblique groove of the first guide groove 42, it is convenient to provide lateral extrusion force to the first guide column 64 to drive the demolding movement of the first module 62. When the first guide column 64 cooperates with the linear groove of the first guide groove 42 At the groove, due to the linear movement of the two-way linkage arm 41, the linear groove will not provide an extrusion pressure to the first guide column 64. At this time, the first module 62 will remain stationary. The second guide groove 43 is Z-shaped, consisting of a linear groove, an oblique groove and a linear groove. Similarly, through the inner wall of the oblique groove of the second guide groove 43, it is convenient to provide lateral extrusion pressure to the second guide column 74 to drive the demolding movement of the second module 72. When the second guide column 74 is matched to the linear groove of the second guide groove 43, due to the linear movement of the two-way linkage arm 41, the linear groove will not provide an extrusion pressure to the second guide column 74, so that the first demolding unit 6, the second demolding unit 7 and the third demolding unit 8 can be demolded in turn.

[0042] Specifically, the first mold removal unit 6 includes: a first limit plate 61, the first limit plate 61 is installed on the upper surface of the first bearing plate 1; a first module 62, the first module 62 is slidably installed on the top of the first limit plate 61; a first sliding frame 63, the first sliding frame 63 is slidably installed on the first bearing plate 1, one end of the first sliding frame 63 is connected to the bottom of the first module 62; a first guide column 64, the first guide column 64 is connected to the other end of the first sliding frame 63, the first guide column 64 is slidably connected to the inner cavity of the first guide groove 42, and the first bearing plate 1 A first slide groove is opened on it, and the first sliding frame 63 cooperates with the inner cavity of the first slide groove, so that the linear motion of the first sliding frame 63 can be limited by the first slide groove, and the movement of the two-way linkage arm 41 is synchronously driven by the operation of the cylinder 3, and the linear motion of the first guide groove 42 is driven by the two-way linkage arm 41, so that the inner wall of the inclined groove of the first guide groove 42 provides lateral force for squeezing the first guide column 64, so that the first sliding frame 63 drives the first module 62 to move linearly under the limitation of the first supporting plate 1, and completes the demolding of the first demolding unit 6.

[0043] Specifically, the second mold removal unit 7 includes: a second limit plate 71, the second limit plate 71 is installed on the upper surface of the second bearing plate 2; a second module 72, the second module 72 is slidably installed on the top of the second limit plate 71; a second sliding frame 73, the second sliding frame 73 is slidably installed on the second bearing plate 2, one end of the second sliding frame 73 is connected to the bottom of the second module 72; a second guide column 74, the second guide column 74 is connected to the other end of the second sliding frame 73, the second guide column 74 is slidably connected to the inner cavity of the second guide groove 43, and the second bearing plate 2 A second slide groove is opened on it, and the second sliding frame 73 cooperates with the inner cavity of the first slide groove, so that the linear motion of the second sliding frame 73 can be limited by the first slide groove, and the movement of the two-way linkage arm 41 is synchronously driven by the operation of the cylinder 3, and the linear motion of the second guide groove 43 is driven by the two-way linkage arm 41, so that the inner wall of the inclined groove of the second guide groove 43 provides lateral force for squeezing the second guide column 74, so that the second sliding frame 73 drives the second module 72 to move linearly under the limitation of the first supporting plate 1, and completes the demolding of the second demolding unit 7.

[0044] Furthermore, the third demolding unit 8 includes a third module, and an interpenetrating column is installed at the bottom of the third module. The interpenetrating column is slidably interpenetratingly connected with the second supporting plate 2, so as to limit the vertical lifting movement of the third module, making the movement of the third module more stable.

[0045] Furthermore, the toggle mechanism 5 includes: a linear pull rod 51, which is slidably arranged on the top of the first supporting plate 1; a toggle block 52, which is installed on the top of the linear pull rod 51, and the toggle block 52 is slidably and interlaced with the second supporting plate 2; a lifting block 53, which is in a vertical state and slidably interlaced with the second supporting plate 2, and the lifting block 53 is installed at the bottom of the third module. Through the connection between the linear pull rod 51 and the cylinder 3, the movement of the output end of the cylinder 3 can synchronously drive the linear movement of the linear pull rod 51, so that the linear pull rod 51 drives the linear movement of the toggle block 52, so that after moving a certain distance, the toggle block 52 can squeeze the inclined surface of the lifting block 53, provide lateral squeezing force to the lifting block 53, so that the lifting block 53 can push the third module to lift up, so as to demould the molded part, making the removal of the molded part more convenient.

[0046] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-unit demoulding structure for a lower mold, comprising: A first carrying plate (1), a second carrying plate (2) being mounted on a surface of the first carrying plate (1); The invention is characterized in that: a cylinder (3) is installed on the side of the first bearing plate (1); the output end of the cylinder (3) is transmission-connected with a bidirectional pulling member (4) and a toggle mechanism (5); one end of the bidirectional pulling member (4) is connected with a first mold ejection unit (6); the first mold ejection unit (6) is installed on the first bearing plate (1); the other end of the bidirectional pulling member (4) is connected with a second mold ejection unit (7); the second mold ejection unit (7) is installed on the second bearing plate (2); and a third mold ejection unit (8) is movably installed on the second bearing plate (2).

2. A three-unit demoulding structure for a lower mold according to claim 1, characterized in that: A fixing frame (31) is installed on the side of the first bearing plate (1), the cylinder (3) is installed on the fixing frame (31), the output end of the fixing frame (31) is drivingly connected to a coupling seat (32), the middle part of the bidirectional pulling member (4) is clamped and installed on the top of the coupling seat (32), and one end of the toggle mechanism (5) is connected to the coupling seat (32).

3. A three-unit demoulding structure for a lower mold according to claim 1, characterized in that: The bidirectional pulling member (4) comprises: A two-way linkage arm (41), wherein both arms of the two-way linkage arm (41) are in an eight-shaped unfolded form; A first guide groove (42), wherein the first guide groove (42) is provided at one end of the bidirectional linkage arm (41), and the first guide groove (42) cooperates with the first demoulding unit (6); A second guide groove (43), wherein the second guide groove (43) is provided at the other end of the bidirectional linkage arm (41), and the first guide groove (42) cooperates with the second ejection unit (7).

4. A three-unit demoulding structure for a lower mold according to claim 1, characterized in that: The first demoulding unit (6) comprises: A first limiting plate (61), the first limiting plate (61) being mounted on the upper surface of the first supporting plate (1); A first module (62), the first module (62) being slidably mounted on the top of the first limiting plate (61); A first sliding frame (63), the first sliding frame (63) is slidably mounted on the first carrying plate (1), and one end of the first sliding frame (63) is connected to the bottom of the first module (62); A first guide post (64), wherein the first guide post (64) is connected to the other end of the first sliding frame (63), and the first guide post (64) is slidably and interlacedly connected with the inner cavity of the first guide groove (42).

5. The three-unit demoulding structure of the lower mold according to claim 1 is characterized in that: The second demoulding unit (7) comprises: A second limiting plate (71), the second limiting plate (71) being mounted on the upper surface of the second supporting plate (2); A second module (72), the second module (72) being slidably mounted on the top of the second limiting plate (71); A second sliding frame (73), the second sliding frame (73) is slidably mounted on the second carrying plate (2), and one end of the second sliding frame (73) is connected to the bottom of the second module (72); A second guide post (74), the second guide post (74) is connected to the other end of the second sliding frame (73), and the second guide post (74) is slidably connected with the inner cavity of the second guide groove (43).

6. A three-unit demoulding structure for a lower mold according to claim 1, characterized in that: The third demoulding unit (8) comprises a third module, and a penetration column is installed at the bottom of the third module, and the penetration column is slidably and penetratedly connected with the second supporting plate (2).

7. A three-unit demoulding structure for a lower mold according to claim 1, characterized in that: The toggle mechanism (5) comprises: A linear pull rod (51), wherein the linear pull rod (51) is slidably disposed on the top of the first bearing plate (1); A shift block (52), the shift block (52) is installed on the top of the linear pull rod (51), and the shift block (52) is slidably connected with the second bearing plate (2); A lifting block (53) is in a vertical state and slides and intersects with the second bearing plate (2), and the lifting block (53) is installed at the bottom of the third module.

Images