Electric swing arm type blow molding machine mold closing mechanism

Abstract

The utility model discloses an electric swing arm type blow molding machine mold closing mechanism which comprises a base, a rear mold plate, a front mold plate, a swing arm, a first connecting rod, a second connecting rod, a traction plate, an adjusting plate, a supporting rod and a mold closing pull rod, the mold closing pull rod is horizontally arranged on the base, the traction plate is vertically arranged at the rear end of the mold closing pull rod, the adjusting plate is vertically arranged at the front end of the mold closing pull rod, and the supporting rod is arranged on the base. The supporting rod is arranged between the bottom of the traction plate and the bottom of the adjusting plate, the front mold plate is arranged on the rear side of the adjusting plate, the rear mold plate is movably arranged above the base and located on the rear side of the front mold plate, a swing arm installation base located between the rear mold plate and the traction plate is arranged on the base, and the swing arm is arranged in the swing arm installation base in a front-back overturning mode. According to the mode, the electric swing arm type mold closing mechanism of the blow molding machine disclosed by the utility model has the advantages that the rear mold plate and the front mold plate are driven to synchronously act by utilizing the first connecting rod and the second connecting rod through the rotation of the swing arm, so that mold closing and mold locking are realized, the response speed is high, and the working stability is high.

Description

Technical Field

[0001] The utility model relates to the field of blow molding machines, in particular to an electric swing-arm type mold clamping mechanism of a blow molding machine. Background Art

[0002] During the production process, blow molding machines require mold opening, closing, and clamping. In existing blow molding machines, these operations are typically performed by hydraulic cylinders. A hydraulic cylinder is installed on the rear mold plate, driving the two mold plates to open and close the mold. When the mold is in the clamped state, the cylinder applies pressure to push the two mold plates forward, exerting a clamping force to achieve mold locking.

[0003] The following defects exist in the oil cylinder driven mold opening and closing:

[0004] 1. Because the mold opening and closing must reach a certain stroke, the stroke of the oil cylinder is very large, resulting in a very slow response speed, and it takes a long time to build up the required pressure when locking the mold;

[0005] 2. The hydraulic cylinder has a large impact. It will generate a huge setback force at the moment of starting. Over time, it will damage the guide rail, which will easily lead to a decrease in the mold clamping accuracy in the later stage, thus affecting the blow molding quality;

[0006] 3. When the hydraulic cylinder is in operation, oil needs to be filled into the hydraulic cylinder through the pipeline to push the piston, which reduces the response speed when opening and closing the mold. In addition, the hydraulic cylinder directly applies driving force to the template, which increases the load of the hydraulic cylinder. After long-term use, the hydraulic cylinder is prone to wear. The worn hydraulic cylinder is prone to oil leakage, which not only causes environmental pollution, but also increases safety hazards in the production process.

[0007] The mold opening and closing mechanisms are often synchronized using a synchronous rack and pinion system. This system is complex to manufacture, and mold opening and closing require very high rigidity and installation requirements. In practice, this system can become stuck or break, and there can be gaps between the synchronous gear and rack, making it difficult to achieve precise mold closing.

[0008] In addition, due to problems with mold processing and assembly of the clamping mechanism, the blow mold is prone to produce tiny gaps after clamping. Since the existing clamping mechanism cannot be adjusted, this gap will affect the molding quality of the blow molded product and increase the burrs on the half surface, which requires improvement. Utility Model Content

[0009] The main technical problem solved by the utility model is to provide an electric swing arm type mold closing mechanism for a blow molding machine, which drives the mold closing and locking by the swing arm, thereby improving the response speed and the mold closing accuracy.

[0010] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an electric swing arm type blow molding machine mold clamping mechanism, including: a base, a rear template, a front template, a swing arm, a first connecting rod, a second connecting rod, a traction plate, an adjustment plate, a support rod and a mold clamping rod, the mold clamping rod is horizontally arranged on the base, the traction plate is vertically arranged at the rear end of the mold clamping rod, the adjustment plate is vertically arranged at the front end of the mold clamping rod, the support rod is arranged between the traction plate and the bottom of the adjustment plate, the front template is arranged at the rear side of the adjustment plate, and the front end surface of the front template is provided with a A first pin shaft ear seat is connected to the upper part of the section plate, and a guide sleeve is provided on the front template and is sleeved on the mold closing rod. The rear template is movably arranged above the base and is located on the rear side of the front template. A swing arm mounting seat is provided on the base and is located between the rear template and the traction plate. The swing arm can be flipped back and forth in the swing arm mounting seat. A second pin shaft ear seat is provided on the back side of the rear template, and a first connecting rod is provided between one end of the swing arm and the second pin shaft ear seat. A third pin shaft ear seat is provided on the upper part of the traction plate, and a second connecting rod is provided between the other end of the swing arm and the third pin shaft ear seat.

[0011] In a preferred embodiment of the present invention, the support rod is parallel to the mold clamping rod.

[0012] In a preferred embodiment of the present invention, a sliding support block sleeved on the mold closing rod is provided at the bottom of the rear mold plate.

[0013] In a preferred embodiment of the present invention, fixed support blocks corresponding to the mold closing rods are arranged at intervals on the base, and the mold closing rods pass through the corresponding fixed support blocks.

[0014] In a preferred embodiment of the present invention, a reducer for driving the swing arm to rotate is provided in the swing arm mounting seat, and a servo motor is provided at the input end of the reducer.

[0015] In a preferred embodiment of the present invention, the adjustment plate is provided with a first screw connected to the front end of the mold clamping rod, and the traction plate is provided with a second screw connected to the rear end of the mold clamping rod.

[0016] In a preferred embodiment of the present invention, the adjustment plate is provided with a third screw connected to the front end of the support rod, and the traction plate is provided with a fourth screw connected to the rear end of the support rod.

[0017] In a preferred embodiment of the present invention, it also includes a front template adjustment assembly, which includes a pad, a first clamping block and a second clamping block. The pad is sleeved on the support rod and is located on the back of the adjustment plate. The support rod is provided with an annular groove corresponding to the first clamping block and the second clamping block. The first clamping block and the second clamping block are relatively arranged in the annular groove and are located on the rear side of the pad. The front ends of the first clamping block and the second clamping block are respectively concave and provided with a first inclined surface obliquely pointing backward to the support rod. The pad is provided with a second inclined surface corresponding to the first inclined surface. A fastening screw is provided between the first clamping block and the second clamping block for connection and adjustment.

[0018] The beneficial effects of the utility model are as follows: the utility model points out an electric swing arm type mold closing mechanism of a blow molding machine, which drives the rear template forward by the rotation of the swing arm, and drives the traction plate and the mold closing pull rod backward by the second connecting rod, driving the adjustment plate and the front template to move backward to achieve mold closing, and locking the mold when the swing arm is rotated to form a straight line with the first connecting rod and the second connecting rod. The response speed is fast, no hydraulic cylinder is required, leakage problems are avoided, and working stability is high. The front template adjustment component can also be used to slightly adjust the angle of the adjustment plate to avoid the gap problem after mold closing, thereby ensuring the molding quality of the blow molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 This is a structural diagram of a preferred embodiment of a mold clamping mechanism of an electric swing-arm blow molding machine of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure in which the front template moves backward to close the mold;

[0022] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0023] Figure 4 yes Figure 1 Another angle view of . DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 4 , the embodiments of the present utility model include:

[0026] like Figure 1 and Figure 2 The electric swing arm blow molding machine mold clamping mechanism shown includes: a base 1, a rear template 12, a front template 11, a swing arm 3, a first connecting rod 7, a second connecting rod 8, a traction plate 5, an adjustment plate 4, a support rod 20, a mold clamping rod 14 and a front template adjustment assembly. The mold clamping rod 14 is horizontally arranged on the base 1. In this embodiment, the number of the mold clamping rods 14 is 2, and fixed support blocks 17 corresponding to the two mold clamping rods 14 are arranged at intervals on the base 1. The mold clamping rod 14 passes through the corresponding fixed support blocks 17, and the mold clamping rod 14 is supported during axial movement by a linear bearing in the fixed support block 17.

[0027] The traction plate 5 is vertically arranged at the rear end of the mold closing rod 14, and the adjustment plate 4 is vertically arranged at the front end of the mold closing rod 14, as shown in FIG. Figure 4 As shown, the adjustment plate 4 is provided with a first screw 21 connected to the front end of the mold clamping rod 14, and the traction plate 5 is provided with a second screw 10 connected to the rear end of the mold clamping rod 14. This structure is strong and ensures the synchronization of the traction plate 5 and the adjustment plate 4. To reduce the deadweight of the adjustment plate 4 and the traction plate 5, the adjustment plate 4 and the traction plate 5 can adopt a cross-shaped structure.

[0028] The support rod 20 is set between the traction plate 5 and the bottom of the adjustment plate 4. In this embodiment, the support rod 20 is parallel to the mold clamping rod 14. The adjustment plate 4 is provided with a third screw 22 connected to the front end of the support rod 20, and the traction plate 5 is provided with a fourth screw 13 connected to the rear end of the support rod 20. The support rod 20 assists in connecting the traction plate 5 and the adjustment plate 4 to ensure the synchronization effect.

[0029] The front plate 11 is set on the rear side of the adjustment plate 4. The front plate 11 is provided with a guide sleeve 18 that is mounted on the mold clamping rod 14 to ensure the verticality of the front plate 11 on the mold clamping rod 14. The front end of the front plate 11 is provided with a first pin ear seat 19 that is connected to the upper part of the adjustment plate 4 to realize the adjustment plate 4 driving the front plate 11.

[0030] The rear template 12 is movably arranged above the base 1 and located on the rear side of the front template 11. A sliding support block 16 is provided at the bottom of the rear template 12 and is sleeved on the mold clamping rod 14. A linear bearing can also be installed in the sliding support block 16 to improve the sliding stability of the rear template 12 on the mold clamping rod 14. The front blow mold is installed on the rear side of the front template 11, and the rear blow mold is installed on the front side of the rear template 12. The front and rear blow molds are driven by the front and rear templates 11 and 12 to achieve mold closing and mold opening.

[0031] A swing arm mounting base 2 is provided on the base 1, which is located between the rear template 12 and the traction plate. The swing arm 3 can be set in the swing arm mounting base 2 so as to be flipped forward and backward. In this embodiment, a reducer 15 for driving the swing arm 3 to rotate is provided in the swing arm mounting base 2. A servo motor 25 is provided at the input end of the reducer 15. The rotation of the servo motor 25 can be controlled by a controller to achieve precise flipping of the swing arm 3.

[0032] A second pin shaft lug seat 6 is provided on the back of the rear template 12, and a first connecting rod 7 is provided between one end of the swing arm 3 and the second pin shaft lug seat 6. Figure 1 and Figure 2 As shown, during the counterclockwise turning process of the swing arm 3, the rear template 12 is driven forward by the first connecting rod 7 to close the mold.

[0033] A third pin shaft ear seat 9 is provided on the upper part of the traction plate 5, and a second connecting rod 8 is provided between the other end of the swing arm 3 and the third pin shaft ear seat 9. During the counterclockwise flipping of the swing arm 3, the traction plate 5 is driven to move backward by the second connecting rod 8, and the traction plate 5 drives the adjustment plate 4 and the front template 11 to move backward through the mold closing rod 14, and cooperates with the forward-moving rear template 12 to close the mold. The mold is locked when the swing arm 3 rotates to form a straight line with the first connecting rod 7 and the second connecting rod 8. The response speed is fast, no hydraulic cylinder is required, and the leakage problem is avoided.

[0034] In order to achieve slight adjustment of the front template 11 relative to the adjustment plate 4, as shown in FIG. Figure 3 As shown, the front template adjustment assembly includes a pad 24, a first clamping block 27 and a second clamping block 23. The pad 24 is sleeved on the support rod 20 and is located on the back of the adjustment plate 4. The support rod 20 is provided with an annular groove 26 corresponding to the first clamping block 27 and the second clamping block 23. The first clamping block 27 and the second clamping block 23 are relatively arranged in the annular groove 26 and are located on the rear side of the pad 24. A fastening screw is provided between the first clamping block 27 and the second clamping block 23 for connection and adjustment.

[0035] The front ends of the first clamping block 27 and the second clamping block 23 are respectively concavely provided with a first inclined surface 28 pointing obliquely backward to the support rod 20, and the cushion block 24 is provided with a second inclined surface 29 corresponding to the first inclined surface 28. During the locking process of the first clamping block 27 and the second clamping block 23 by tightening the screws, the cushion block 24 can be pushed forward by utilizing the cooperation of the first inclined surface 28 and the second inclined surface 29, so that the bottom of the back side of the adjustment plate 4 is subjected to force and tilted forward slightly, the top of the adjustment plate 4 tilts backward slightly and the first pin shaft ear seat 19 is utilized to drive the relative backward movement (micrometer level) of the front template 11, thereby changing the distance between the front template 11 and the rear template 12 after the mold is closed, and reducing the gap problem between the front mold and the rear mold after the blow molding is closed.

[0036] In summary, the electric swing arm type mold clamping mechanism of the blow molding machine pointed out in the utility model can quickly realize the mold clamping and locking of the blow molding machine, has a fast response speed, high working reliability, and can also adjust the front template to ensure the mold clamping accuracy.

[0037] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric swing arm blow molding machine mold clamping mechanism, characterized in that: include: The adjusting base is provided with a first pin lug seat which is connected to the adjusting base and a second pin lug seat which is connected to the adjusting base.

2. The electric swing arm type blow molding machine mold clamping mechanism according to claim 1, characterized in that: The support rod is parallel to the mold clamping rod.

3. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: The bottom of the rear template is provided with a sliding support block sleeved on the mold closing rod.

4. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: Fixed support blocks corresponding to the mold closing rods are arranged at intervals on the base, and the mold closing rods pass through the corresponding fixed support blocks.

5. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: A reducer for driving the swing arm to rotate is provided in the swing arm mounting seat, and a servo motor is provided at the input end of the reducer.

6. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: The adjusting plate is provided with a first screw connected to the front end of the mold clamping rod, and the traction plate is provided with a second screw connected to the rear end of the mold clamping rod.

7. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: The adjusting plate is provided with a third screw connected to the front end of the support rod, and the pulling plate is provided with a fourth screw connected to the rear end of the support rod.

8. The electric swing arm type mold clamping mechanism of the blow molding machine according to claim 1, characterized in that: It also includes a front template adjustment assembly, which includes a pad, a first clamping block and a second clamping block. The pad is sleeved on the support rod and is located on the back of the adjustment plate. The support rod is provided with an annular groove corresponding to the first clamping block and the second clamping block. The first clamping block and the second clamping block are relatively arranged in the annular groove and are located on the rear side of the pad. The front ends of the first clamping block and the second clamping block are respectively concave and provided with a first inclined surface obliquely pointing backward to the support rod. The pad is provided with a second inclined surface corresponding to the first inclined surface. A fastening screw is provided between the first clamping block and the second clamping block for connection and adjustment.

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