CN103056993A - Synchronous die clamping device - Google Patents

Abstract

The invention discloses a synchronous mold clamping device, which comprises: a bracket, a first mold and a second mold matched with each other, a driving mechanism installed on the bracket for driving the first mold and the second mold to close molds, and a mold synchronous linkage mechanism The mold synchronous linkage mechanism includes a flexible transmission part and a fixed wheel fixed on the bracket, the flexible transmission part bypasses the fixed wheel, and the two ends of the flexible transmission part bypass the fixed wheel to respectively pull on the first mold and the second mold. The synchronous mold clamping device of the present invention draws on the first mold and the second mold respectively through the flexible transmission member bypassing the two ends of the fixed wheel, so that the first mold and the second mold move synchronously, thereby controlling the first mold and the second mold. The synchronous operation of the molds solves the problem of asynchronous movement of the first mold and the second mold, and realizes the synchronization of the mold closing and demoulding processes between the first mold and the second mold. The synchronous mold clamping device of the present invention has a novel and ingenious structural design, and is simple in structure, easy to realize, and beneficial to popularization and utilization.

Description

Synchronous clamping device

technical field

The invention relates to the field of mold clamping devices, in particular to a mold clamping device in which matching molds operate synchronously.

Background technique

In the mold clamping device, the mold clamping movement is generally driven by a cylinder. For the general mold clamping movement, it is very simple and easy to realize the mold clamping movement with the cylinder to ensure that the upper and lower molds are closed.

In order to ensure that the upper and lower molds are closed, generally in the prior art, one of the upper mold base and the lower mold base is fixed, and then the other mold base is pushed by an air cylinder, thereby realizing mold closing. However, for some devices that need to control the synchronous movement of the upper and lower molds, it is difficult to realize the synchronous movement of the upper and lower molds in the prior art.

The Chinese patent application with the application publication number CN 101873914A discloses a mold clamping device, which has: a fixed plate, which is fixedly arranged on the machine tool base, has a mold clamping cylinder and maintains a fixed mold; a movable plate, which is carried by the machine tool base, A movable mold is maintained and the mold opening and closing cylinder is used to move forward and backward relative to the fixed plate; a plurality of tie rods, one end of which is connected to the piston of the mold clamping cylinder, have a sawtooth shape or a A square-toothed thread or an annular groove runs through the movable plate, and a split nut for mold clamping is installed on the movable plate to engage or disengage with the thread or annular groove of the pull rod . This technical solution achieves mold clamping through the cooperation of the fixed mold and the movable mold, but when it is necessary to control the synchronous movement of the upper and lower molds, the above structure cannot realize the synchronous movement of the upper and lower molds driven by the cylinder.

Contents of the invention

The object of the present invention is to solve the problems and deficiencies mentioned above, and to provide a synchronous mold clamping device, which bypasses the two ends of the fixed wheel through a flexible transmission and draws them on the first mold and the second mold respectively, so that the first The mold and the second mold move relative to each other synchronously, so as to achieve the purpose of mold closing with synchronous operation of the molds.

A synchronous mold clamping device, comprising:

bracket;

first and second molds cooperating with each other;

a driving mechanism installed on the bracket for driving the first mold and the second mold to close;

The mold synchronous linkage mechanism includes a flexible transmission part and a fixed wheel fixed on the bracket, the flexible transmission part bypasses the fixed wheel, and the two ends of the flexible transmission part bypass the fixed wheel respectively pull on the first mold and the second mold.

Under the drive of the driving mechanism, the first mold and the second mold are matched with each other to complete the mold clamping. When the first mold and the second mold are close to each other for mold clamping, the flexible transmission member bypassing the fixed wheel has been pulling the first mold and the second mold. the second mold, thereby synchronizing the first mold and the second mold.

Preferably, the mold synchronous linkage mechanism further includes a first guide wheel arranged on the first mold and a second guide wheel arranged on the second mold, and the flexible transmission member bypasses the fixed The two ends of the wheel go around the first guide wheel and the second guide wheel respectively, and the two ends of the flexible transmission member that go around the first guide wheel and the second guide wheel are fixed on the bracket. The first mold and the second mold are respectively provided with a first guide wheel and a second guide wheel, and through the reversing action of the guide wheels, the synchronization during mold closing is further improved to ensure the effect of mold clamping.

Further preferably, one end of the flexible transmission member bypassing the first guide wheel and the second guide wheel is fixed on the bracket at a position close to the clamping position of the first mold and the second mold, and the other end is fixed on the bracket The upper position is close to the fixed wheel, so as to ensure that the flexible transmission member bypassing the first guide wheel and the second guide wheel simultaneously pulls the first mold and the second mold to ensure the effect of mold clamping.

Even more preferably, one end of the flexible transmission member bypassing the first guide wheel and the second guide wheel is fixed on the bracket at a position close to the clamping position of the first mold and the second mold through an eccentric tensioner, and One end is fixed on the bracket by bolts close to the fixed wheel, and the eccentric tensioner can adjust the tension of the flexible transmission part by rotating, so as to better realize the synchronization during mold closing and ensure the accuracy of mold closing. Effect.

The flexible transmission part can be selected from steel cables and synchronous belts, etc., further preferably, the fixed wheel, the first guide wheel and the second guide wheel are all sprockets, and the flexible transmission part is a chain. Cooperating, the chain will not slip off on the sprocket, which can improve the synchronization of the first mold and the second mold clamping, and ensure the effect of mold clamping.

Preferably, the driving mechanism includes a first air cylinder installed on the support for driving the first mold and a second air cylinder for driving the second mold. Because the control precision of the air cylinder is relatively low, when the driving mechanism is an air cylinder, the synchronous linkage mechanism of the mold in the present invention can make the moulds operate synchronously, thereby overcoming the technical problems of poor precision of the air cylinder and difficulty in realizing the synchronous mould-closing of the moulds. .

Further preferably, the first mold is fixed on the piston rod of the first cylinder, and the second mold is fixed on the piston rod of the second cylinder.

Further preferably, there are two mold synchronous linkage mechanisms, namely a first mold synchronous linkage mechanism and a second mold synchronous linkage mechanism, wherein the fixed wheel in the first mold synchronous linkage mechanism is located on the bracket close to the The position of the first air cylinder, the fixed wheel in the synchronous linkage mechanism of the second mold is located on the bracket close to the second air cylinder. The above arrangement makes the synchronous linkage mechanisms of the two molds relatively arranged, which further improves the synchronism of the first mold and the second mold clamping, and improves the effect of mold clamping.

Compared with the prior art, the present invention has the following significant advantages and beneficial effects:

The synchronous mold clamping device of the present invention bypasses the two ends of the fixed wheel and respectively draws on the first mold and the second mold through the flexible transmission member, so that the first mold and the second mold move synchronously relative to each other, thereby completing mold clamping. In the preferred solution, a guide wheel is added, and the reversing effect of the guide wheel is used to control the synchronous operation of the first mold and the second mold, which solves the problem of asynchronous movement of the first mold and the second mold, thereby realizing the first Synchronization of mold and second mold clamping and demoulding processes.

The synchronous mold clamping device of the present invention has a novel and ingenious structural design, and is simple in structure and easy to implement. The synchronous mold clamping device of the present invention is suitable for various synchronous mold clamping fields, is easy to popularize and utilize, and has broad application prospects.

Description of drawings

Fig. 1 is the structural representation of synchronous mold clamping device of the present invention;

Among them, 1 is the guide wheel, 2 is the flexible transmission part, 3 is the fixing bolt, 4 is the fixed wheel, 5 is the first cylinder, 6 is the first guide wheel, 7 is the first mold, 8 is the flexible transmission part, and 9 is the eccentric Tensioning wheel, 10 is the second mold, and 11 is the second guide wheel, and 12 is fixed bolt, and 13 is fixed wheel, and 14 is the second cylinder, and 15 is the second guide wheel, and 16 is the eccentric tensioning wheel.

Detailed ways

The synchronous mold clamping device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a synchronous mold clamping device of the present invention, including: a bracket (not shown), which is mainly used as a mounting frame for the installation of various parts; the first mold 7 (ie upper mold base) and the second mold that cooperate 10 (i.e. the lower mold frame), cooperate with each other to complete the mold clamping; the driving mechanism installed on the support to drive the first mold 7 and the second mold 10 mold clamping; the mold synchronous linkage mechanism, there are two in Fig. 1, the first There is at least one mold synchronous linkage mechanism and the second mold synchronous linkage mechanism. The mold synchronous linkage mechanism at least includes a flexible transmission part and a fixed wheel fixed on the bracket. The flexible transmission part bypasses the two ends of the fixed wheel and respectively pulls On the first mold 7 and the second mold 10 . As in the synchronous linkage mechanism of the first mold, it at least includes a flexible transmission part 2 and a fixed wheel 4 fixed on the bracket, and the flexible transmission part 2 is pulled around the two ends of the fixed wheel 4 on the first mold 7 and the second mold 10 respectively. In fact, this simplest embodiment can also realize the synchronous operation of the first mold 7 and the second mold 10, thereby realizing the synchronization of the first mold 7 and the second mold 10 in the mold closing and demoulding processes. But the effect of this simplest embodiment is not ideal.

In a further specific embodiment, the mold synchronous linkage mechanism also includes a first guide wheel arranged on the first mold 7 and a second guide wheel arranged on the second mold 10, and the flexible transmission member goes around the two ends of the fixed wheel Go around the first guide wheel and the second guide wheel respectively, and one end of the flexible transmission member that walks around the first guide wheel and the second guide wheel is fixed on the bracket near the clamping place of the first mold 7 and the second mold 10 position, and the other end is fixed on the bracket near the fixed wheel. As in the first mold synchronous linkage mechanism, it also includes the first guide wheel 1 arranged on the first mold 7 and the second guide wheel 15 arranged on the second mold 10, and the flexible transmission member 2 bypasses the fixed wheel 4. The two ends go around the first guide wheel 1 and the second guide wheel 15 respectively, and one end of the flexible transmission part 2 bypassing the first guide wheel 1 is fixed on the bracket near the fixed wheel 4, and the flexible transmission part 2 goes around the second One end of the guide wheel 15 is fixed on the support at a position close to the clamping place of the first mold 7 and the second mold 10 . The first guide wheel 1 is set on the first mold 7 and the second guide wheel 15 is set on the second mold 10, through the reversing action of the guide wheels, the synchronism when realizing mold closing is improved.

In the above specific embodiments, as long as there is at least one mold synchronous linkage mechanism, the synchronization of the first mold 7 and the second mold 10 in the mold closing and demoulding processes can be realized, but the effect is not ideal.

The driving mechanism includes a first air cylinder 5 (ie, an upper air cylinder) mounted on a support for driving the first mold 7 and a second air cylinder 14 (ie, a lower air cylinder) for driving the second mold 10 . Since the control precision of the air cylinder is relatively low, when the driving mechanism is an air cylinder, the synchronous linkage mechanism of the molds in the present invention can make the first mold and the second mold run synchronously and close the molds.

The specific embodiment with the best effect, there are two mold synchronous linkage mechanisms, respectively the first mold synchronous linkage mechanism and the second mold synchronous linkage mechanism, wherein the fixed wheel 4 in the first mold synchronous linkage mechanism is located on the bracket close to the second mold synchronous linkage mechanism. The position of the first air cylinder 5, the fixed wheel 13 in the second mold synchronous linkage mechanism is located at the position close to the second air cylinder 14 on the support. The above arrangement makes the synchronous linkage mechanisms of the two molds relatively arranged, which further improves the synchronicity of the mold closing of the first mold 7 and the second mold 10, and improves the effect of mold closing.

The synchronous linkage mechanism of the first mold comprises a flexible transmission member 2, a fixed wheel 4 fixed on the support, a first guide wheel 1 arranged on the first mold 7 and a second guide wheel 15 arranged on the second mold 10. The wheel 4 is close to the first cylinder 5, the flexible transmission part 2 can be selected from steel cables, synchronous belts, chains, etc., the flexible transmission part 2 is specifically selected from the chain, and the fixed wheel 4, the first guide wheel 1 and the second guide wheel 15 are sprockets , the chain will not slip off on the sprocket, which can improve the synchronization of the first mold 7 and the second mold 10 in mold clamping. The flexible transmission member 2 bypasses the two ends of the fixed wheel 4 and then respectively bypasses the first guide wheel 1 and the second guide wheel 15, and one end of the flexible transmission member 2 bypasses the first guide wheel 1 and is fixed on the bracket close to the fixed wheel 4. The position is fixed on the bracket with the fixing bolt 3. One end of the flexible transmission member 2 bypassing the second guide wheel 15 is fixed on the bracket at the position close to the clamping position of the first mold 7 and the second mold 10. The tension wheel 16 is fixed at this position, and the eccentric tension wheel 16 can adjust the tension of the flexible transmission member 2 through rotation.

The second mold synchronous linkage mechanism includes a flexible transmission member 8, a fixed wheel 13 fixed on the support, a first guide wheel 6 arranged on the first mold 7, and a second guide wheel 11 arranged on the second mold 10. Wheel 13 is close to the second cylinder 14, and flexible transmission member 8 can be selected steel cable, synchronous belt, chain etc., and flexible transmission member 8 is specifically selected chain, and fixed wheel 13, first guide wheel 6 and second guide wheel 11 are sprockets , the chain will not slip off on the sprocket, which can improve the synchronization of the first mold 7 and the second mold 10 in mold clamping. The two ends of the flexible transmission member 8 bypassing the fixed wheel 13 then respectively bypass the first guide wheel 6 and the second guide wheel 11, and one end of the flexible transmission member 8 bypassing the second guide wheel 11 is fixed on the bracket near the fixed wheel 13. The position is fixed on the bracket with the fixing bolt 12, and the flexible transmission member 8 bypasses one end of the first guide wheel 6 and is fixed on the bracket at the position close to the clamping position of the first mold 7 and the second mold 10. The tension wheel 9 is fixed at this position, and the tension of the flexible transmission member 8 can be adjusted by the eccentric tension wheel 9 through rotation.

The specific working principle of the synchronous mold clamping device of the present invention is as follows:

In the most preferred structure of the synchronous mold clamping device of the present invention, during the mold clamping process, when the action of the second cylinder (lower cylinder) 14 lags behind the action of the first cylinder (upper cylinder) 5, the first cylinder 5 will pass through the flexible The transmission part 2 (that is, the chain) pulls the second mold 10 (lower mold frame), so that the action of the second cylinder 14 is synchronized with the action of the first cylinder 5; similarly, when the action of the first cylinder 5 lags behind the action of the second cylinder 14 During the action, the second cylinder 14 will pull the first mold 7 (upper mold frame) through the flexible transmission member 8, so that the action of the first cylinder 5 is synchronized with the action of the second cylinder 14, thereby realizing the synchronization of the mold clamping process.

During the demoulding process, when the action of the first cylinder (upper cylinder) 5 lags behind the action of the second cylinder (lower cylinder) 14, the second cylinder 14 will pull the first mold 7 (upper mold frame) through the flexible transmission part 2 ), so that the action of the first cylinder 5 is synchronized with the action of the second cylinder 14; similarly, when the action of the second cylinder 14 lags behind the action of the first cylinder 5, the first cylinder 5 will pull the second mold through the flexible transmission member 8 10, the action of the second air cylinder 14 is synchronized with the action of the first air cylinder 5, so as to realize the synchronization of the demoulding process.

The specific implementation described above has described in detail the technical solutions and beneficial effects of the synchronous mold clamping device of the present invention. It should be understood that the above description is only the most preferred embodiment of the synchronous mold clamping device of the present invention, and is not intended to limit the present invention. Inventions, any modifications, supplements and equivalent replacements made within the principle scope of the present invention shall be included in the protection scope of the present invention.

Claims (8)

1. A synchronous mold clamping device, characterized in that, comprising: bracket; first and second molds cooperating with each other; a driving mechanism installed on the bracket for driving the first mold and the second mold to close; The mold synchronous linkage mechanism includes a flexible transmission part and a fixed wheel fixed on the bracket, the flexible transmission part bypasses the fixed wheel, and the two ends of the flexible transmission part bypass the fixed wheel respectively pull on the first mold and the second mold. 2. The synchronous mold clamping device according to claim 1, wherein the mold synchronous linkage mechanism further comprises a first guide wheel arranged on the first mold and a guide wheel arranged on the second mold. The second guide wheel, the flexible transmission member bypasses the two ends of the fixed wheel and then respectively bypasses the first guide wheel and the second guide wheel, and the two ends of the flexible transmission member bypass the first guide wheel and the second guide wheel are fixed on the bracket. 3. The synchronous mold clamping device according to claim 2, characterized in that, one end of the flexible transmission member bypassing the first guide wheel and the second guide wheel is fixed on the bracket close to the first mold and the second mold. The position of the mold clamping place of the mold, the other end is fixed on the position close to the fixed wheel on the described support. 4. The synchronous mold clamping device according to claim 3, characterized in that, one end of the flexible transmission member bypassing the first guide wheel and the second guide wheel is fixed on the support by an eccentric tensioner close to the first guide wheel. The position of the clamping position of the first mold and the second mold, and the other end is fixed on the bracket by bolts at a position close to the fixed wheel. 5. The synchronous mold clamping device according to claim 2, wherein the fixed wheel, the first guide wheel and the second guide wheel are sprockets, and the flexible transmission member is a chain. 6. The synchronous mold clamping device according to claim 1, wherein the driving mechanism comprises a first air cylinder mounted on the support for driving the first mold and a cylinder for driving the second mold. the second cylinder. 7. The synchronous mold clamping device according to claim 6, wherein the first mold is fixed on the piston rod of the first cylinder, and the second mold is fixed on the piston rod of the second cylinder superior. 8. The synchronous mold clamping device according to claim 6, characterized in that there are two mold synchronous linkage mechanisms, namely a first mold synchronous linkage mechanism and a second mold synchronous linkage mechanism, wherein the first mold synchronous linkage mechanism The fixed wheel in the mold synchronous linkage mechanism is located on the support near the first cylinder, and the fixed wheel in the second mold synchronous linkage mechanism is located on the support close to the second cylinder.

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