Mold and punch linkage side face core pulling structure

Abstract

The utility model discloses a mold and punch linkage side face core-pulling structure, and aims to provide a mold and punch linkage side face core-pulling structure which can be powered by a punch to perform core pulling. The device comprises a lifting rod, a connecting rod and a transverse moving block, the lower end of the lifting rod is connected with the upper end of the connecting rod in a sliding mode, the lower end of the lifting rod is connected with the transverse moving block in a sliding mode, the included angle between the connecting rod and the transverse moving block is an acute angle, the transverse moving block is provided with a core shaft, and the core shaft is detachably connected with the transverse moving block. The core pulling device has the advantages that power is provided by a punching machine for core pulling, the transverse moving block can be driven to move, the moving stroke of the transverse moving block can be limited, parts can be protected, normal falling of the connecting rod is guaranteed, and the mandrel is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of mold core pulling, in particular to a side core pulling structure with linkage between a mold and a punching press. Background Art

[0002] During injection molding, when there are internal and external holes, cavities or bosses on the plastic part that are not in the same direction as the mold opening direction, the plastic part cannot be directly demolded by a push rod or other ejection mechanisms. At this time, it is necessary to use a lateral parting and ejection mechanism to first eject the side forming part, and then eject the plastic part, otherwise demolding will not be possible. The current side core pulling structure directly sets up an independent power mechanism for core pulling, lacking a mechanism for linkage with the punching press.

[0003] Chinese Patent Grant Publication No.: CN206913613U, Grant Publication Date: January 23, 2018, discloses a side core pulling structure of a mold, including an inclined guide post and a driving slider. The characteristics are: wear-resistant blocks are arranged on the inclined guide post, an inclined chute is arranged on the driving slider, the inclined guide post slides on the chute through the wear-resistant blocks, convex blocks are arranged on both sides of the end of the inclined guide post close to the driving slider, and grooves for buckling with the convex blocks are arranged on both sides of the driving slider at the chute. The disadvantage of this utility model is that it uses an independent power mechanism for core pulling and lacks linkage with the punching press. Summary of the Utility Model

[0004] The utility model aims to overcome the deficiency in the prior art that an independent power mechanism is used for core pulling and lacks linkage with the punching press, and provides a side core pulling structure with linkage between a mold and a punching press that can use the punching press to provide power for core pulling.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A side core pulling structure with linkage between a mold and a punching press includes a lifting rod, a connecting rod and a transverse moving block. The lower end of the lifting rod is slidably connected to the upper end of the connecting rod, the lower end of the lifting rod is slidably connected to the transverse moving block, the included angle between the connecting rod and the transverse moving block is acute, a core shaft is arranged on the transverse moving block, and the core shaft is detachably connected to the transverse moving block.

[0007] The upper end of the lifting rod is connected to the punching press, and the punching press drives the lifting rod to move up and down. A transverse moving block is installed on the mold, and the transverse moving block is slidably connected to the mold. A mandrel is installed on the transverse moving block and cooperates with the mold. The side structure of the plastic part is realized through the cooperation of the mandrel and the mold. The mandrel is detachably connected to the transverse moving block, and different structures can be adapted by replacing the mandrel. When the lifting rod descends, it drives the connecting rod to descend together. The connecting rod is at a certain angle. When the connecting rod descends, it drives the transverse moving block to move through the sliding connection with the transverse moving block. When the connecting rod with a certain slope descends, it drives the transverse moving block to move towards the mold and cooperate with the mold. When the compression molding is completed, the punching press drives the lifting rod to rise. The lifting rod drives the connecting rod at an angle with the transverse moving block to rise, which will drive the transverse moving block to move backward, so as to demold, achieving the purpose of core pulling powered by the punching press.

[0008] Preferably, a transverse moving hole is provided on the transverse moving block. The transverse moving hole matches the transverse moving block. A limiting groove is provided at the lower end of the transverse moving hole. The limiting groove communicates with the transverse moving hole. The lower end of the connecting rod passes through the transverse moving hole and is placed in the limiting groove. A limiting block is installed at the lower end of the connecting rod. The transverse moving block is slidably connected to the connecting rod through the cooperation of the connecting rod and the transverse moving hole. A transverse moving hole is provided on the transverse moving block. The transverse moving hole forms an angle with the top surface of the transverse moving block. One end of the connecting rod passes through the transverse moving hole and is placed in the limiting groove at the lower end of the transverse moving hole. The connecting rod is slidably connected to the transverse moving block. Since the height of the transverse moving block is fixed and the connecting rod is an inclined rod, when the connecting rod descends, the transverse moving block will move horizontally along the connecting rod. The limiting block installed at the lower end of the connecting rod is placed in the limiting groove, which can prevent the connecting rod from coming out. Such a design can drive the transverse moving block to move.

[0009] Preferably, a pressing plate is installed at the upper end of the connecting rod. The pressing plate corresponds to the transverse moving block. A pressing plate is installed at the upper end of the connecting rod. The distance between the pressing plate and the limiting plate limits the stroke distance of the transverse moving block. When the transverse moving block drives the mandrel to cooperate with the mold, the pressing plate fits against the top surface of the transverse moving plate, and at the same time, it can press the transverse moving block for fixation. When the transverse moving block moves away from the mold, at the same time, the limiting plate installed at the lower end of the connecting rod is placed in the limiting groove to prevent the connecting rod from coming out. Such a design can limit the moving stroke of the transverse moving block.

[0010] Preferably, a connection block is installed at the upper end of the connecting rod. A sliding hole is provided on the connection block. The lower end of the lifting rod passes through the sliding hole and is located below the lifting rod. A baffle is installed at the lower end of the lifting rod. The lifting rod is slidably connected to the connection block through cooperation with the sliding hole. An installation plate is installed at the upper end of the lifting rod. A connection block is installed at the upper end of the connecting rod. The lower end of the lifting rod passes through the sliding hole on the connection block, and the lifting rod is slidably connected to the upper end of the connecting rod. When the connecting rod is pulled up, the baffle on the bottom surface of the lifting rod fits against the connection block on the top surface of the connecting rod to drive the connecting rod to rise. When driving the connecting rod to move downward, when the transverse movement block moves to cooperate with the mold, to prevent the punching press from continuing to descend and damaging the parts, the connection block at the top of the connecting rod rises along the lifting rod, thereby preventing the extrusion force applied by the punching press from being too large and damaging the parts. Such a design can protect the parts.

[0011] Preferably, a contact plate is installed at the upper end of the lifting rod. A spring is installed on the lifting rod. One end of the spring is connected to the contact plate, and the other end of the spring is connected to the connection block. In order to ensure that the transverse movement plate can move to the position where it cooperates with the mold when the lifting rod drives the connecting rod to descend, a spring is installed on the lifting rod. The spring applies an elastic force to the connection block. When the connecting rod moves downward, it is ensured that the connection block contacts the baffle before the extrusion plate installed on the connecting rod contacts the transverse movement block, ensuring the normal movement of the transverse movement block. Such a design can ensure the normal descent of the connecting rod.

[0012] Preferably, a fixing plate is installed at one end of the core shaft. A clamping groove is provided at one end of the transverse movement block. The end of the core shaft where the fixing plate is installed is placed in the clamping groove. The clamping groove matches the core shaft. A fixing block is provided in the clamping groove. One side of the fixing block matches the core shaft, and the other side of the fixing block is detachably connected to the transverse movement block. A detachable core shaft is installed on the transverse movement rod. A fixing plate is installed on the core shaft. The fixing plate and one end of the core shaft are placed in the clamping groove, which can limit the lateral movement of the core shaft. A fixing block is installed in the clamping groove to fix the core shaft in the clamping groove. The fixing block is fixed to the transverse movement block by screws. The core shaft can be taken out for replacement by removing the fixing block. Such a design facilitates the replacement of the core shaft.

[0013] The beneficial effects of the present utility model are: The core pulling is powered by a punching press, which can drive the transverse movement block to move, can limit the movement stroke of the transverse movement block, can protect the parts, ensure the normal descent of the connecting rod, and facilitate the replacement of the core shaft. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is Figure 1 the structural schematic diagram of the connecting rod in

[0016] Figure 3 is Figure 1 a schematic structural diagram of the lifting rod in

[0017] Figure 4 is Figure 1 a sectional view of the transverse movement block and the mandrel in

[0018] In the figure: 1, lifting rod; 11, baffle; 12, mounting plate; 13, contact plate; 14, spring; 2, connecting rod; 21, limit block; 22, extrusion plate; 23, connecting block; 24, sliding hole; 3, transverse movement block; 31, transverse movement hole; 32, limit groove; 33, clamping groove; 34, fixing block; 4, mandrel; 41, fixing plate; Specific embodiments

[0019] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0020] As Figure 1 in the embodiment, a side core-pulling structure with linkage between a mold and a punching press includes a lifting rod 1, a connecting rod 2 and a transverse movement block 3. The lower end of the lifting rod 1 is slidably connected to the upper end of the connecting rod 2, the lower end of the lifting rod 1 is slidably connected to the transverse movement block 3, the included angle between the connecting rod 2 and the transverse movement block 3 is acute, a mandrel 4 is provided on the transverse movement block 3, and the mandrel 4 is detachably connected to the transverse movement block 3.

[0021] As Figure 2 、 Figure 4 shown, a transverse movement hole 31 is provided on the transverse movement block 3, the transverse movement hole 31 matches the transverse movement block 3, a limit groove 32 is provided at the lower end of the transverse movement hole 31, the limit groove 32 communicates with the transverse movement hole 31, the lower end of the connecting rod 2 passes through the transverse movement hole 31 and is placed in the limit groove 32, a limit block 21 is installed at the lower end of the connecting rod 2, and the transverse movement block 3 is slidably connected to the connecting rod 2 through the cooperation of the connecting rod 2 and the transverse movement hole 31.

[0022] An extrusion plate 22 is installed at the upper end of the connecting rod 2, and the extrusion plate 22 corresponds to the transverse movement block 3.

[0023] As Figure 3 shown, a connecting block 23 is installed at the upper end of the connecting rod 2, a sliding hole 24 is provided on the connecting block 23, the lower end of the lifting rod 1 passes through the sliding hole 24 and is placed below the lifting rod 1, a baffle 11 is installed at the lower end of the lifting rod 1, and the lifting rod 1 is slidably connected to the connecting block 23 through the cooperation with the sliding hole 24, and a mounting plate 12 is installed at the upper end of the lifting rod 1.

[0024] A contact plate 13 is installed at the upper end of the lifting rod 1, a spring 14 is installed on the lifting rod 1, one end of the spring 14 is connected to the contact plate 13, and the other end of the spring 14 is connected to the connecting block 23.

[0025] One end of the mandrel 4 is provided with a fixing plate 41. One end of the transverse movement block 3 is provided with a clamping groove 33. The end of the mandrel 4 where the fixing plate 41 is installed is placed in the clamping groove 33. The clamping groove 33 matches the mandrel 4. A fixing block 34 is arranged in the clamping groove 33. One side of the fixing block 34 matches the mandrel 4, and the other side of the fixing block 34 is detachably connected to the transverse movement block 3.

[0026] During use, when the mandrel 4 needs to cooperate with the mold, the punch descends, driving the lifting rod 1 to descend together. When descending, the connecting block 23 is squeezed by the spring 14 to fit with the baffle 11. The descending of the lifting rod 1 drives the connecting rod 2 to descend. When the connecting rod 2 descends, it guides the movement of the transverse movement block 3, driving the transverse movement block 3 to move towards the mold until the pressing plate 22 fits with the transverse movement block 3. At this time, the punch continues to press down, and the connecting block at the top of the connecting rod 2 rises along the lifting rod 1 to prevent damage to the parts.

[0027] When core pulling is required, the lifting rod 1 rises following the punch. First, under the action of the spring 14, the lifting rod 2 is slidably connected to the connecting block 23 until the connecting block 23 contacts the baffle 11. Then it continues to rise, driving the connecting rod 2 to rise together. Then the connecting rod 2 drives the transverse movement block 3 to move towards the side away from the mold until the mandrel 4 is pulled out of the mold.

Claims

1. A side core-pulling structure with linkage between a mold and a punching press, characterized in that It includes a lifting rod (1), a connecting rod (2) and a transverse moving block (3). The lower end of the lifting rod (1) is slidably connected to the upper end of the connecting rod (2), and the lower end of the lifting rod (1) is slidably connected to the transverse moving block (3). The included angle between the connecting rod (2) and the transverse moving block (3) is acute. A core shaft (4) is provided on the transverse moving block (3), and the core shaft (4) is detachably connected to the transverse moving block (3).

2. The side core-pulling structure with linkage between a mold and a punching press according to claim 1, characterized in that A transverse moving hole (31) is provided on the transverse moving block (3). The transverse moving hole (31) matches the transverse moving block (3). A limiting groove (32) is provided at the lower end of the transverse moving hole (31). The limiting groove (32) communicates with the transverse moving hole (31). The lower end of the connecting rod (2) passes through the transverse moving hole (31) and is placed in the limiting groove (32). A limiting block (21) is installed at the lower end of the connecting rod (2). The transverse moving block (3) is slidably connected to the connecting rod (2) through the cooperation of the connecting rod (2) and the transverse moving hole (31).

3. The side core-pulling structure with linkage between a mold and a punching press according to claim 2, characterized in that An extrusion plate (22) is installed at the upper end of the connecting rod (2), and the extrusion plate (22) corresponds to the transverse moving block (3).

4. A side core-pulling structure with linkage between a mold and a punching press according to claim 1, characterized in that, A connecting block (23) is installed at the upper end of the connecting rod (2). A sliding hole (24) is provided on the connecting block (23). The lower end of the lifting rod (1) passes through the sliding hole (24) and is placed below the lifting rod (1). A baffle (11) is installed at the lower end of the lifting rod (1). The lifting rod (1) is slidably connected to the connecting block (23) through the cooperation with the sliding hole (24). An installation plate (12) is installed at the upper end of the lifting rod (1).

5. A side core-pulling structure with linkage between a mold and a punching press according to claim 3, characterized in that, A contact plate (13) is installed at the upper end of the lifting rod (1). A spring (14) is installed on the lifting rod (1). One end of the spring (14) is connected to the contact plate (13), and the other end of the spring (14) is connected to the connecting block (23).

6. The side core-pulling structure with linkage between a mold and a punching press according to claim 1, characterized in that, One end of the core shaft (4) is installed with a fixing plate (41). A clamping groove (33) is provided at one end of the transverse moving block (3). The end of the core shaft (4) installed with the fixing plate (41) is placed in the clamping groove (33). The clamping groove (33) matches the core shaft (4). A fixing block (34) is provided in the clamping groove (33). One side of the fixing block (34) matches the core shaft (4), and the other side of the fixing block (34) is detachably connected to the transverse moving block (3).

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