A pressure relief device for the side of a molding hot press

Abstract

The present invention discloses a side pressure relief device for a molding hot press, comprising: at least one base installed on the lower hot pressing plate of the molding hot press and located on one side of the soft mold; a slide plate slidably arranged on the base; at least one slide seat slidably arranged on the slide seat, when the slide plate slides relative to the base, the slide seat is driven to slide relative to the slide plate; a movable side baffle, when the slab is pressed, the movable side baffle is in contact with the soft mold to withstand the side pressure transmitted by the soft mold; when the mold is unloaded, the movable side baffle is driven by the slide seat to move, break away from the contact with the soft mold, and relieve the side pressure generated by the soft mold when the slab is pressed; a combined oil cylinder, the combined oil cylinder directly drives the slide plate to move forward and backward. The present invention has the following advantages: 1. It is more convenient and easy to remove the mold from the press; 2. The mold does not require external force assistance to be removed, and it will not be deformed after being removed; 3. It is suitable for small molding presses with high unit surface pressure and small format. And use soft molds that are easily deformed under force.

Description

Technical Field

[0001] The invention relates to the technical field of molding hot presses, and in particular to a side pressure relief device for molding hot presses. Background Art

[0002] At present, multi-layer hot presses with soft molds are used for the production of bamboo or wood-based panels. The lateral pressure of the slab is very large after pressing. When the slab needs to be unloaded, a lateral pressure relief device is required to perform a pressure relief operation so that the pressure applied to the side of the mold by the slab after high-pressure pressing is released, which facilitates the removal of the pressed slab and the mold from the press. The current lateral pressure relief devices all use traditional oil cylinders or air cylinders to directly drive the mold for pressure relief. The oil cylinders or air cylinders need to withstand the huge lateral pressure during mold pressing. The structure is bulky, which makes it inconvenient for the mold to be easily removed from the press. External force is required to remove the mold, and the mold is easily deformed after being taken out. The current lateral pressure relief device is not suitable for small hydraulic presses with high unit surface pressure and small format. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a side pressure relief device for a molding hot press with a simple structure and convenient and easy mold removal in view of the shortcomings of the side pressure relief device used in the existing multi-layer hot press with soft molds.

[0004] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0005] A pressure relief device for a molding hot press side, comprising:

[0006] At least one base mounted on the lower hot platen of the molding hot press and located on one side of the soft mold;

[0007] A slide plate slidably disposed on the base;

[0008] At least one sliding seat slidably disposed on the slide, when the slide slides relative to the base, the sliding seat is driven to slide relative to the slide;

[0009] a movable side baffle, when the slab is pressed, the movable side baffle is in contact with the soft mold to withstand the side pressure transmitted by the soft mold; when the mold is unloaded, the movable side baffle is driven by the slide to move, break away from the contact with the soft mold, and remove the side pressure generated by the soft mold when the slab is pressed;

[0010] A combined oil cylinder, a piston in the combined oil cylinder is connected to the slide plate, and the movement of the piston directly drives the slide plate to move forward and backward.

[0011] In a preferred embodiment of the present invention, the movement direction of the slide plate is perpendicular to the movement direction of the movable side baffle plate, wherein the movement direction of the slide plate is the front-to-back direction of the molding and hot press machine, and the movement direction of the movable side baffle plate is the left-to-right direction of the molding and hot press machine.

[0012] In a preferred embodiment of the present invention, a first sliding groove is arranged on the base, and the sliding plate is slidably arranged in the first sliding groove.

[0013] In a preferred embodiment of the present invention, a second slide groove is arranged on the slide plate, a guide key is provided on the slide seat, and the guide key is slidably arranged in the second slide groove.

[0014] In a preferred embodiment of the present invention, two pressing plates are arranged on the base, and the pressing plates cooperate with the second sliding groove to jointly constrain the movement direction and stroke of the sliding seat and the movable side baffle.

[0015] In a preferred embodiment of the present invention, an angle of 7° is formed between the axis of the second slide groove and the axis of the first slide groove.

[0016] In a preferred embodiment of the present invention, there are two bases, which are installed in a straight line on the side of the lower hot pressing plate of the molding hot press; there are two second slide grooves, and there are two slide seats, and the guide keys on the two slide seats are respectively slidably configured in the corresponding second slide grooves.

[0017] Due to the adoption of the above technical solution, the combined oil cylinder of the present invention drives the slide plate to move forward and backward, and the second slide groove on the slide plate drives the guide key on the slide seat to move and the slide seat and the movable side baffle plate to move left and right under the common constraint of the pressure plate installed on the base, thereby realizing lateral pressure relief of the soft mold and facilitating the removal of the soft mold from the molding hot press.

[0018] The oil pressure of the combined oil cylinder of the present invention only overcomes the friction force when the above-mentioned slide plate, slide seat, movable side baffle plate, etc. move, and has nothing to do with the huge side pressure during mold molding. Therefore, the structure of the combined oil cylinder does not need to be bulky.

[0019] The axis of the second slide groove of the present invention is at an angle of 7° to the axis of the first slide groove, which utilizes the principle of self-locking of the friction pair, so that the slide seat and the movable side baffle connected together can overcome the huge lateral pressure generated by the soft mold when producing the slab. No matter how large the lateral pressure is, the movable side baffle will not move left and right.

[0020] The invention drives the slide plate to move by combining oil cylinders, and the slide groove on the slide plate and the pressure plate fixed on the base jointly constrain the slide seat and the movable side baffle plate to move in the left and right directions, which are perpendicular to the movement direction of the slide plate.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. It is more convenient and easy to remove the mold from the press;

[0023] 2. The mold can be removed without external force and will not deform after removal;

[0024] 3. Suitable for small-sized molding machines with high unit surface pressure and small format. And use soft molds that are easily deformed under force. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the side pressure relief device of the molding hot press of the present invention.

[0026] Figure 2 It is a top view of the side pressure relief device of the molding hot press of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] See also Figure 1 and Figure 2 The side pressure relief device of a molding hot press shown in the figure includes two bases 100, a slide plate 200, a combined oil cylinder 300, a movable side baffle 400, and two slide seats 500. Of course, the base 100 can also be one or more, and the slide seat 500 can also be one or more, which is designed according to needs.

[0029] The two bases 100 are installed in a straight line on the side of the hot pressing plate 610 of the molding hot press 600 and are located on one side of the soft mold 700. A first slide groove 110 for sliding the slide plate 200 is provided on each base 100. The slide plate 200 is slidably arranged in the first slide groove 110 on the two bases 100, so that the slide plate 200 can slide relative to the two bases 100. The sliding direction of the slide plate 200 is the front-to-back direction of the molding hot press 600, which is perpendicular to the direction of the huge side pressure generated when producing the slab.

[0030] It is driven by a combined oil cylinder 300 installed on the molding hot press 600. The piston in the combined oil cylinder 300 is connected to one end of the slide plate 200. The movement direction of the piston in the combined oil cylinder 300 is the movement direction of the slide plate 200, which is perpendicular to the direction of the huge lateral pressure generated when the slab is produced. In this way, the piston in the combined oil cylinder 300 will not bear the huge lateral pressure during mold molding. Therefore, the bearing capacity of the combined oil cylinder 300 has nothing to do with the huge lateral pressure during mold molding. The structure of the combined oil cylinder 300 can be simplified and does not need to be as large as the oil cylinder or air cylinder in the prior art, thereby reducing costs.

[0031] Two second slide grooves 210 are arranged on the slide plate 200, and the directions of the two second slide grooves 210 are parallel. The guide keys 510 on the two slide seats 500 are respectively slidably configured in the corresponding second slide grooves 210. In this way, when the slide plate 200 moves, the two slide seats 500 will be driven to move through the two second slide grooves 210 and the guide keys 510 on the two slide seats 500.

[0032] The movable side baffle 400 is only connected to the two slide seats 500, and is not connected to the soft mold 700. In this way, after the pressure is released, the soft mold 700 can be conveniently and easily removed from the molding hot press 600 without the need for external force, and the mold is not easily deformed after being taken out.

[0033] The movement of the movable side baffle 400 is driven by the movement of the two slide seats 500. The movement direction of the movable side baffle 400 and the two slide seats 500 is defined by the second slide groove 210 and the guide key 510 on the slide plate 200. The movement direction of the movable side baffle 400 and the two slide seats 500 is perpendicular to the movement direction of the slide plate 200, that is, the movement direction of the movable side baffle 400 and the two slide seats 500 is the left and right direction of the molding hot press.

[0034] In order to constrain the movement direction of the movable side baffle 400 and the two slides 500, two pressure plates 120 are respectively provided on the two bases 100. The pressure plates 120 cooperate with the second slide grooves 210 to jointly constrain the movement direction and stroke of the two slides 500 and the movable side baffle 400.

[0035] When the slab 800 is pressed, the movable side baffle 400 contacts the soft mold 700 to withstand the lateral pressure transmitted from the soft mold 700; the lateral pressure transmitted from the soft mold 700 is transmitted to the hot pressing plate 610 through the movable side baffle 400, the two slides 500, the guide keys 510 on the two slides 500 and the two bases 100, but not to the combined oil cylinder 300. The oil pressure of the combined oil cylinder 300 only overcomes the friction force when the above-mentioned slide plate 100, the two slides 500, the movable side baffle 400, etc. move.

[0036] When the mold is unloaded, the movable side baffle 400 is driven by the two slide seats 500 to move left and right, and is out of contact with the soft mold 700, thereby removing the side pressure generated by the soft mold 700 when the slab is pressed.

[0037] The present invention sets the angle a between the axis of the second slide groove 210 and the axis of the first slide groove 110 to 7°, and utilizes the principle of self-locking of the friction pair so that the two slide seats 500 and the movable side baffle 400 connected together can overcome the huge lateral pressure generated by the soft mold 700 when producing the slab. No matter how large the lateral pressure is, the movable side baffle 400 will not move left or right.

Claims

1. A pressure relief device for a hot press side, characterized in that: include: At least one base mounted on the lower hot platen of the molding hot press and located on one side of the soft mold; A slide plate slidably disposed on the base; At least one sliding seat slidably disposed on the slide, when the slide slides relative to the base, the sliding seat is driven to slide relative to the slide; a movable side baffle, when the slab is pressed, the movable side baffle is in contact with the soft mold to withstand the side pressure transmitted by the soft mold; when the mold is unloaded, the movable side baffle is driven by the slide to move, break away from the contact with the soft mold, and remove the side pressure generated by the soft mold when the slab is pressed; A combined oil cylinder, a piston in the combined oil cylinder is connected to the slide plate, and the movement of the piston directly drives the slide plate to move forward and backward.

2. A pressure relief device for a hot press molding machine as claimed in claim 1, characterized in that: The movement direction of the slide plate is perpendicular to the movement direction of the movable side baffle plate, wherein the movement direction of the slide plate is the front-to-back direction of the molding and hot press machine, and the movement direction of the movable side baffle plate is the left-to-right direction of the molding and hot press machine.

3. A pressure relief device for hot press molding machine side according to claim 1 or 2, characterized in that: A first sliding groove is arranged on the base, and the slide plate is slidably arranged in the first sliding groove.

4. A pressure relief device for a hot press molding machine as claimed in claim 3, characterized in that: A second slide groove is arranged on the slide plate, and a guide key is arranged on the slide seat. The guide key is slidably arranged in the second slide groove.

5. A pressure relief device for a hot press molding machine as claimed in claim 4, characterized in that: A pressing plate is arranged on the base, and the pressing plate cooperates with the second sliding groove to jointly constrain the movement direction and stroke of the sliding seat and the movable side baffle.

6. A pressure relief device for a hot press molding machine as claimed in claim 5, characterized in that: There is an angle of 7° between the axis of the second slide groove and the axis of the first slide groove.

7. A pressure relief device for hot press molding machine as claimed in claim 6, characterized in that: There are two bases, which are installed in a straight line on the side of the lower hot pressing plate of the molding hot press; there are two second slide grooves, and there are two slide seats, and the guide keys on the two slide seats are respectively slidably configured in the corresponding second slide grooves.

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