CN204749028U - MOLD CLAMPING APPARATUS of polyurethane handrail belt lacing moulding press - Google Patents

Abstract

The utility model discloses a mold clamping device of a polyurethane handrail belt joint molding press, which comprises a C-shaped support frame, a lower mold, an upper mold and an oil cylinder, and the bottom end inside the support frame is provided with a horizontally arranged lower mold mounting plate, The top inside the support frame is provided with an oil cylinder mounting plate, the lower mold is fixed on the lower mold mounting plate, the oil cylinder is vertically arranged on the oil cylinder mounting plate, the piston rod of the oil cylinder stretches up and down, and the piston rod of the oil cylinder The end is connected with the upper mold mounting plate through the connecting pressure head, and the upper mold is installed on the upper mold mounting plate. The utility model realizes automatic mold opening and mold closing, and improves production efficiency.

Description

A mold clamping device of a polyurethane handrail joint molding machine

technical field

The utility model relates to polyurethane handrail joint production equipment, more specifically, a mold clamping device of a polyurethane handrail joint molding press.

Background technique

The existing polyurethane handrail (abbreviated as NT handrail) joint molding machine is switched from mold opening to mold closing, and the operator needs to manually turn the upper mold 1 and the mold locking mechanism 2 installed on the leading column at a certain angle (see figure 1), complete the clamping step of the mold so that the upper and lower molds can be clamped in parallel, thereby completing the splicing process of the NT handrail. After the NT handrail is spliced, it needs to unlock the mold to take out the finished product. Therefore, each product operation process needs to go through mold opening and mold closing. These steps are all done manually by the operator. The above-mentioned operation process is very cumbersome and affects production efficiency. At the same time, due to the frequent turnover of the upper mold and the front guide column due to the process requirements, the parallelism of the upper and lower molds is not enough, resulting in an excessive pressure difference between the front and rear sides when the mold is closed, making the extrusion lines on both sides uneven, resulting in a There is too much material on one side, and the lip thickness of the product is out of tolerance, and the other side is short of material, resulting in surface defects of the product.

Once the difference between the extrusion lines on both sides is too large and the product quality is affected, it is necessary to adjust the gap between the springs 3 installed under the six guide pillars to eliminate the pressure difference between the front and rear sides when the mold is closed (see Figure 1 As shown), the adjustment process of the spring is not only cumbersome, but also affects the stability of the pressure in the mold cavity during the molding process, which will cause defects such as flow lines and bubbles on the surface of the finished product.

Therefore, there is a need for a clamping device for a polyurethane handrail joint molding press that can ensure the levelness of the upper and lower molds without manual mold opening and clamping.

Utility model content

In order to solve the above-mentioned problems in the prior art, the utility model proposes a mold clamping device of a polyurethane handrail joint molding press.

The utility model can be solved by the following technical solutions:

The utility model discloses a mold clamping device of a polyurethane handrail belt joint molding press, which comprises a C-shaped support frame, a lower mold, an upper mold and an oil cylinder, and the bottom end inside the support frame is provided with a horizontally arranged lower mold mounting plate, The top inside the support frame is provided with an oil cylinder mounting plate, the lower mold is fixed on the lower mold mounting plate, the oil cylinder is vertically arranged on the oil cylinder mounting plate, the piston rod of the oil cylinder stretches up and down, and the piston rod of the oil cylinder The end is connected with the upper mold mounting plate through the connecting pressure head, and the upper mold is installed on the upper mold mounting plate.

The upper mold mounting plate of the utility model is connected with the oil cylinder mounting plate through a plurality of guide rods that can move up and down.

There are four guide rods described in the utility model, which are respectively arranged at the four corners of the upper mold mounting plate.

The oil cylinder mounting plate of the utility model is provided with a linear bearing for the guide rod to move up and down.

Due to the adoption of the above technical scheme, a mold clamping device of a polyurethane handrail joint molding press of the present invention adopts a C-shaped support frame to fix the lower mold horizontally, and then connects the upper mold with the fixed cylinder piston rod to realize The automatic up and down movement of the upper mold is realized, which realizes the automatic mold opening and closing, which improves the production efficiency; then, by ensuring the upper mold can move up and down horizontally, the levelness of the upper mold and the lower mold is guaranteed, which improves the production efficiency. Product production quality.

Description of drawings

Fig. 1 is polyurethane handrail joint joint molding machine in the prior art.

Fig. 2 is a mold clamping device of a polyurethane handrail joint molding press of the present invention.

Fig. 3 is a partial cross-sectional view of the mold clamping device of the polyurethane handrail joint molding press shown in Fig. 2A.

Component designation description

1 upper mold

2 clamping mechanism

3 springs

4 die

5 support frame

6 cylinders

61 piston rod

7 Oil cylinder mounting plate

8 guide rod

9 connection head

10 upper mold mounting plate

11 Lower mold mounting plate

12 linear bearings

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model:

As shown in Figure 2 and Figure 3, a mold clamping device of a polyurethane handrail joint molding press of the present invention includes a C-shaped support frame 5, a lower mold 4, an upper mold 1 and an oil cylinder 6, and a bottom inside the support frame. There is a lower mold mounting plate 11 arranged horizontally at the end, and an oil cylinder mounting plate 7 parallel to the lower mold mounting plate 11 is provided on the top of the support frame, the lower mold 4 is fixed on the lower mold mounting plate 11, and the oil cylinder 6 is vertically arranged on the cylinder On the mounting plate 7, the piston rod of the oil cylinder 6 stretches up and down, and the end of the piston rod of the oil cylinder 6 links to each other with the upper die mounting plate 10 through the connecting head 9, and the upper die 1 is installed on the upper die mounting plate 10. The utility model adopts a C-shaped support frame, the upper mold and the lower mold are arranged relatively, and the lower mold is installed horizontally. By connecting the upper mold with the oil cylinder, the automatic up and down movement of the upper mold is realized, that is, the automation of mold opening and closing is completed. .

In order to ensure the levelness of the upper mold and the lower mold and to ensure that the pressure on both sides is the same after the mold is closed, the above-mentioned upper mold mounting plate 10 is connected to the oil cylinder mounting plate 7 through a plurality of guide rods 8 that can move up and down (see Figure 2). In this embodiment, there are four guide rods 8, which are respectively arranged at the four corners of the upper die mounting plate 10. The above-mentioned oil cylinder mounting plate 7 is provided with a linear bearing 12 for the guide rod 8 to move up and down, which ensures the linearity of the upper mold when it moves up and down, and ensures the parallelism of the upper and lower molds.

The above-mentioned oil cylinder mounting plate 7 and the lower mold mounting plate 11 are integrally produced with the support frame. After the production is completed, the parallelism between the oil cylinder mounting plate 7 and the lower mold mounting plate 11 is guaranteed to be within 0.02mm, that is, The parallelism of the upper and lower molds is guaranteed.

The principle of mold clamping of this mold press is that the upper mold 1 rises or falls linearly with the piston rod 61 of the oil cylinder 6, and the lower mold 4 is fixed so as to realize the functions of mold clamping and mold opening.

Specifically: the upper mold 1 is fixed on the upper mold mounting plate 10 connected to the connecting head 9 by bolts, so as to be connected with the piston rod 61 of the oil cylinder 6 and follow the piston rod 61 to rise or fall. The oil cylinder 6 is fixed on the oil cylinder mounting plate 7 by bolts, which ensures the immobility of the oil cylinder 6, and the rise or fall of the piston rod 61 also drives the rise and fall of the upper die 1, while the lower die 4 is directly fixed on the lower die by bolts. Fixed on the mounting plate 11, it is the mold closing process when the upper mold 1 descends, and it is the mold opening process when the upper mold 1 rises.

Since the lower die 4 is fixed, and the upper die 1 needs to rise and fall periodically, ensuring the straightness during the lowering of the upper die means ensuring the mold clamping accuracy between the upper and lower dies. And the straightness in the rising or falling process of the upper die 1 depends on the linear bearing 12 and the guide rod 8 to ensure. As shown in Figure 3, the piston rod 61 is connected to the upper mold mounting plate 10 through the connecting head 9 to control the rise and fall of the upper mold 1 (mold opening and closing), and the linear bearing 12 is also bolted to the cylinder mounting plate 7 Above, one end of the guide rod 8 is threadedly connected to the upper die mounting plate 10, and the other end is inserted into the linear bearing 12, so that the structure of four guide rods 8 plus the linear bearing 12 in total prevents the upper die mounting plate 10 from The rotation has ensured the straightness of the upper die 1 in the process of rising and falling well. In this way, the uniformity of the extrusion line of the product is also guaranteed, and the quality of the molded joint product is guaranteed.

However, the above-mentioned specific implementations are only exemplary, and are for better understanding of this patent by those skilled in the art, and cannot be interpreted as limiting the scope of this patent; as long as any Equivalent changes or modifications all fall within the scope of this patent.

Claims (4)

1. a clamping device of polyurethane handrail joint molding press, is characterized in that: comprise the support frame (5) of C shape, counterdie (4), upper mold (1) and oil cylinder (6), described support frame The bottom end of the interior is provided with a lower mold mounting plate (11) arranged horizontally, and the top inside the support frame is provided with an oil cylinder mounting plate (7), and the lower mold (4) is fixed on the lower mold mounting plate (11). The oil cylinder (6) is vertically arranged on the oil cylinder mounting plate (7), the piston rod (61) of the oil cylinder (6) stretches up and down, and the end of the piston rod of the oil cylinder (6) is connected to the pressure head (9) It is connected with the upper mold installation plate (10), and the upper mold (1) is installed on the upper mold installation plate (10). 2. The mold clamping device of a polyurethane handrail joint molding press according to claim 1, characterized in that: the upper mold mounting plate (10) is connected to the upper mold mounting plate (10) through a plurality of guide rods (8) that can move up and down. Oil cylinder mounting plate (7) links to each other. 3. The mold clamping device of a polyurethane handrail joint molding press according to claim 2, characterized in that: the guide rods (8) are four, respectively arranged on the upper mold mounting plate (10) at the four corners. 4. The mold clamping device of a polyurethane handrail joint molding press according to claim 2, characterized in that: the oil cylinder mounting plate (7) is provided with a linear bearing (12) for the guide rod (8) to move up and down ).