Mould opening and closing device of two-plate type blow molding machine

Abstract

The utility model relates to the technical field of blow molding machines, in particular to a two-plate type blow molding machine mold opening and closing device which comprises a rack A and a rack B which are connected with a left mold and a right mold respectively, a gear is arranged between the rack A and the rack B in an engaged mode, a pressing mechanism is arranged on the periphery of the gear, and the pressing mechanism comprises supporting seats arranged on the upper portion of the rack A and the lower portion of the rack B; the supporting seat is fixedly connected with a base of the blow molding machine and provided with a movable arm, the middle of the movable arm is connected with the supporting seat in a hinged structure mode, the idler wheel is connected with the movable arm in a rotating structure mode and used for pressing the rack A and the rack B on the gear to guarantee meshing tightness, and the idler wheel is connected with the movable arm in a rotating structure mode and far away from an elastic piece of the idler wheel. One end of the elastic piece is connected with the movable arm, the other end of the elastic piece is connected with the supporting base, the movable arm is driven by the elastic piece to press the roller on the rack, it is guaranteed that the gear and the rack are tightly matched, transmission is stable and reliable, noise of gear transmission can be reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to a two-plate blow molding machine mold opening and closing device. BACKGROUND

[0002] The application number of the invention patent of the company is 201910359780.1, and the invention patent is a blow molding machine mold locking device. The blow molding machine mold locking device comprises a mold locking oil cylinder, a mold locking plug, a mold locking head and a rotating joint. The mold locking oil cylinder is fixedly connected with a movable mold plate on one side of the blow molding machine. The piston rod of the mold locking oil cylinder faces the inner side of the movable mold plate. The flange of the plug is connected with the front end of the piston rod of the mold locking oil cylinder through a connecting structure. A anti-back-off check plate is arranged in the cavity of the mold locking head. A cross-shaped through hole with a shape and size matched with the anti-back-off head is formed in the middle of the anti-back-off check plate. The rotating joint comprises a joint shaft rotatably connected with a movable mold plate on the other side. The joint shaft penetrates through the movable mold plate. One end of the joint shaft facing the inner side of the movable mold plate is connected with the rear end of the mold locking head through a connecting structure. The other end of the joint shaft facing the outer side of the movable mold plate is provided with an anti-back-off structure for preventing the horizontal displacement of the joint shaft. The joint shaft can be rotated around the central axis of the joint shaft through external force. The blow molding machine mold locking device is a mechanical mold locking device. The structure is simple, strong and durable, and the post-maintenance is simple.

[0003] The blow molding machine utilizes the oil cylinder to push the left and right molds to slide on the base, and the gear and rack structure is used to ensure the synchronization of the two mold plates, so that the accuracy of the mold locking device is ensured. However, after long-time operation, the rack and the base of the blow molding machine are worn, the gear and the rack are not tightly matched, the friction is increased, and the wear of the gear and the rack is aggravated. This not only shortens the service life of the gear and the rack, but also affects the accuracy and stability of the entire transmission system. UTILITARIAN NEW VARIETY

[0004] In order to solve the above technical problems, the utility model provides a two-plate blow molding machine mold opening and closing device, which solves the technical problem that the wear of the rack and the base of the blow molding machine is aggravated, the gear and the rack are not tightly matched, and the accuracy and stability of the entire transmission system are affected. In order to solve the above technical problems, the utility model adopts the technical scheme that:

[0005] The two-plate blow molding machine mold opening and closing device comprises a rack A and a rack B connected with a left mold and a right mold respectively, and a gear arranged in a meshing mode between the rack A and the rack B. The gear is characterized in that a pressing mechanism is arranged around the gear, and the pressing mechanism comprises:

[0006] A support seat is arranged on the upper part of the rack A and the lower part of the rack B, and the support seat is fixedly connected with the base of the blow molding machine;

[0007] An active arm is connected with the support seat in a hinged structure mode;

[0008] Roller for pressing the engagement of the rack A, the rack B and the gear, the roller is connected with the movable arm in a rotary structure;

[0009] Elastic member away from the roller, one end of the elastic member is connected with the movable arm, and the other end of the elastic member is connected with the supporting seat;

[0010] Power member, the power member is connected with the gear to drive the gear to rotate.

[0011] Further, the number of pressing mechanisms is four, and the pressing mechanisms are arranged on both sides of the gear in a two-two symmetric structure.

[0012] Further, the roller is a rubber roller.

[0013] Further, the elastic member is a spring.

[0014] Further, the power member is a servo motor, the servo motor is fixedly connected with the bottom seat of the blow molding machine, and the output shaft of the servo motor is connected with the gear through a key.

[0015] The beneficial effects of the utility model are that: the power member drives the rack to move forward and backward through the gear, thereby driving the left and right molds to move, which can replace the hydraulic cylinder as the power of mold opening and closing during normal production, and reduces investment; by setting the pressing mechanism, the gear and the rack are closely matched, transmission is stable and reliable, noise of gear transmission is also reduced, and service life is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model embodiment.

[0017] Figure 2 It is a structural schematic diagram of the pressing mechanism and the rack of the utility model.

[0018] In the figure:

[0019] 1, left mold, 2, right mold, 3, rack A, 4, rack B, 5, gear, 6, supporting seat, 7, movable arm, 8, roller, 9, elastic member, 10, pressing mechanism. CONCRETE IMPLEMENTATION

[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail with reference to the drawings and the following embodiments, so that the public can better master the implementation method of the utility model, and the specific implementation scheme of the utility model is:

[0021] The two-plate blow molding machine mold opening and closing device, including the rack A 3 and the rack B 4 connected with the left mold 1 and the right mold 2 respectively, the rack A 3 and the rack B 4 are provided with a gear 5 through meshing, the gear 5 is provided with a pressing mechanism 10, the pressing mechanism 10 includes a support seat 6 arranged on the upper part of the rack A 3 and the lower part of the rack B 4, the support seat 6 is fixedly connected with the blow molding machine base, the support seat 6 is provided with a movable arm 7, the movable arm 7 is connected with the support seat 6 in a hinged structure, a roller 8 is connected with the movable arm 7 in a rotating structure, for pressing the rack A 3 and the rack B 4 on the gear 5, ensuring the tightness of meshing, the roller 8 is connected with the movable arm 7 in a rotating structure, a spring 9 away from the roller 8, one end of the spring 9 is connected with the movable arm 7, the other end is connected with the support seat 6, the spring 9 drives the movable arm 7 to press the roller on the rack, ensuring that the gear and the rack are tightly matched, the transmission is stable and reliable, and the noise of the gear transmission is also reduced, and the service life is improved.

[0022] Specifically, the number of the pressing mechanism 10 is four, and the pressing mechanism 10 is arranged on both sides of the gear 5 in a two-two symmetrical structure, so that the rack on both sides of the gear 5 is balanced.

[0023] It should be noted that the roller 8 is a rubber roller, which reduces the hard friction.

[0024] It should be noted that the spring 9 is a spring, and the spring force of the spring 9 moves the movable arm 7 on one side of the roller 5 towards the gear, thereby ensuring the pressure of the roller 8 on the rack.

[0025] The blow molding machine base is fixedly provided with a power member, the power member is connected with the gear 5 to drive the gear 5 to rotate, the power member is a servo motor, the output shaft of the servo motor is connected with the gear 5 through a key, the power member drives the rack to move forward and backward through the gear, thereby driving the left and right molds to move, which can replace the hydraulic cylinder as the power of mold opening and closing during normal production, and the investment is reduced.

[0026] The working principle and working process of the utility model are as follows:

[0027] Start the servo motor, the servo motor drives the rack A 3 and the rack B 4 to move through the gear 5, the spring 9 pulls the movable arm 7, and one end of the movable arm 7 is provided with an outward force, and then the other end of the movable arm 7 presses the roller 8 on the rack A 3 and the rack B 4, so as to ensure the tightness of the meshing of the rack A 3 and the rack B 4 and the gear 5.

[0028] In the description of the utility model, it is understood that the terms "center", "upper", "lower", "left", "right", "front", "rear", "left lower", "right upper", "outer", "clockwise", "counterclockwise" and other indicated orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance. Although the utility model is described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of the utility model described herein.

Claims

1. A two-plate blow molding machine mold opening and closing device comprising a rack A (3) and a rack B (4) connected to a left mold (1) and a right mold (2), respectively, a gear (5) being provided between the rack A (3) and the rack B (4) in a meshing manner, characterized in that, The gear (5) is provided with pressing mechanisms (10) around the periphery, the pressing mechanisms (10) comprising: Support seats (6) arranged on the upper part of the rack A (3) and the lower part of the rack B (4), the support seats (6) being fixedly connected with the base of the blow molding machine; Movable arms (7) connected with the support seats (6) in a hinged structure in the middle part; Rollers (8) for pressing the engagement of the rack A (3) and the rack B (4) with the gear (5), the rollers (8) being rotatably connected with the movable arms (7); Elastic members (9) away from the rollers (8), one end of the elastic members (9) being connected with the movable arms (7) and the other end being connected with the support seats (6); Power members connected with the gear (5) to drive the gear (5) to rotate.

2. The two-plate blow mold opening and closing device according to claim 1, characterized in that: The number of the pressing mechanisms (10) is four, and the pressing mechanisms (10) are arranged on both sides of the gear (5) in a two-by-two symmetrical structure.

3. The two-plate blow mold opening and closing device according to claim 1, characterized in that: The roller (8) is a rubber roller.

4. The two-plate blow mold opening and closing device according to claim 1, characterized in that: The elastic member (9) is a spring.

5. The two plate blow mold opening and closing apparatus according to claim 1, characterized by: The power member is a servo motor, the servo motor being fixedly connected with the base of the blow molding machine, and the output shaft of the servo motor being connected with the gear (5) through a key.

Images