Corner welding machine for door seal production

Abstract

The utility model discloses an angle welding machine for door seal production, which relates to the technical field of angle welding machines and comprises a box body, and modules are slidably arranged on the left side and the right side of the upper end face of the box body; a moving table is installed in the box body in an up-down sliding mode, a heater is fixedly installed on the upper end face of the moving table, and the heater is arranged between the two modules; linkage assemblies are arranged between the heater and the two modules; the linkage assembly comprises a motor, a connecting rod, a threaded rod and a lead screw, the motor is fixedly installed in the box body, the connecting rod is fixedly installed on an output shaft of the motor, the threaded rod is rotatably installed at the top end in the box body, the threaded rod is in threaded connection with the moving table, and the threaded rod is in transmission connection with the connecting rod; a motor, a connecting rod, a threaded rod and a lead screw are arranged; and the two die sets are automatically close to each other for die assembly. And the heater on the moving table automatically moves downwards, so that the door seal is convenient to weld, the working intensity of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corner welding machines, in particular to a corner welding machine for the production of door seals. Background Art

[0002] In the process of manufacturing refrigerator and freezer door seals, a corner welding device is required to weld the four corners of the door seal to form a complete door seal.

[0003] The door seal corner welding device disclosed in Chinese Patent CN215283407U includes a left module and a right module, and a translational die closing control device is provided on the left module and the right module; a left front die and a left rear die are provided on the left module, and a right front die and a right rear die are provided on the right module; a longitudinal die closing control device is provided on the left front die and the left rear die, and on the right front die and the right rear die; a heater is provided between the left module and the right module, and a heater moving device is provided on the heater.

[0004] When the above-mentioned existing door seal corner welding device is in use, the operator controls the rotation device to control the lifting of the heater. When heating is required, the heater moving device rotates to lift the heater up. After heating is completed, the heater moving device rotates to lower the heater. There is no cooperation relationship between the lifting of the heater and the opening and closing process of the mold. It is impossible to realize the lifting of the heater in cooperation with the mold. Workers need to manually operate the lifting of the heater after mold closing and mold opening, resulting in low work efficiency.

[0005] To solve the above problems, the utility model proposes a corner welding machine for the production of door seals. Summary of the Utility Model

[0006] To solve the problems in the background art, the utility model proposes a corner welding machine for the production of door seals.

[0007] To achieve the above object, the utility model provides the following technical solution: A corner welding machine for the production of door seals includes a box body. Modules are slidably provided on both the left and right sides of the upper end surface of the box body; a moving table is slidably installed up and down inside the box body, and a heater is fixedly installed on the upper end surface of the moving table. The heater is arranged between the two modules; a linkage assembly is provided between the heater and the two modules; the linkage assembly includes a motor, a connecting rod, a threaded rod and a lead screw. The motor is fixedly installed inside the box body, a connecting rod is fixedly installed on the output shaft of the motor, a threaded rod is rotatably installed at the top end inside the box body, the threaded rod is threadedly connected to the moving table, and the threaded rod is drivingly connected to the connecting rod; a lead screw is rotatably installed on the upper end surface of the box body, helical grooves with opposite rotation directions are respectively formed on both sides of the outer surface of the lead screw, both sides of the lead screw are threadedly connected to the two modules respectively, and the lead screw is drivingly connected to the connecting rod.

[0008] Preferably, a second bevel gear is fixedly installed at the bottom end of the threaded rod, and a first bevel gear is fixedly installed on the outer side of the connecting rod. The first bevel gear is meshed with the second bevel gear.

[0009] Preferably, a second pulley is fixedly installed at one end of the lead screw, and a first pulley is fixedly installed at the end of the connecting rod away from the motor. The first pulley and the second pulley are connected by belt drive.

[0010] Preferably, a support frame is fixedly installed on one side of the upper end surface of the box body. A corner welding machine is fixedly installed on the support frame. The output end of the corner welding machine is vertically downward and arranged between the two modules.

[0011] Preferably, a guide post is fixedly installed inside the box body; the guide post is slidably connected with the moving table, and the guide post is arranged on the side of the moving table away from the threaded rod.

[0012] Preferably, a support table is fixedly installed on the upper end surface of the box body. The support table corresponds to the support frame. A displacement sensor is fixedly installed at the top end of the support table corresponding to one side of the support frame. A contact rod is fixedly installed on the displacement sensor.

[0013] Preferably, a front mold and a rear mold are arranged inside the module; the front mold is fixedly installed on one side inside the module; the rear mold is installed in a limited sliding manner on the other side inside the module; an electric push rod is fixedly installed on the inner wall of the module, and the telescopic end of the electric push rod is fixedly connected with the rear mold.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] For the corner welding machine used in the production of the door seal strip, by setting the motor, the connecting rod, the threaded rod and the lead screw; while the two modules automatically approach each other for mold closing, the heater on the moving table automatically moves downward, which is convenient for the operation of welding the door seal strip, reduces the labor intensity of workers, and improves work efficiency. Description of the drawings

[0017] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the present utility model;

[0020] Figure 3 It is a schematic front sectional view of the present utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the module of the present utility model.

[0022] Reference numerals: 1, box body; 2, support frame; 3, corner welding machine; 4, support table; 5, displacement sensor; 6, contact rod; 7, motor; 8, connecting rod; 9, first bevel gear; 10, threaded rod; 11, second bevel gear; 12, moving table; 13, heater; 14, guide post; 15, first pulley; 16, belt; 17, second pulley; 18, lead screw; 19, module; 20, front mold; 21, electric push rod; 22, rear mold. Detailed implementation manners

[0023] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , the present invention provides a technical solution: a corner welding machine for door seal production, including a box body 1, and modules 19 are respectively and limit-slidingly arranged on the left and right sides of the upper end surface of the box body 1.

[0025] A front mold 20 and a rear mold 22 are arranged inside the module 19. The front mold 20 is fixedly installed on one side inside the module 19. The rear mold 22 is limit-slidingly installed on the other side inside the module 19. An electric push rod 21 is fixedly installed on the inner wall of the module 19, and the telescopic end of the electric push rod 21 is fixedly connected to the rear mold 22. Knife edges are arranged on the opposite surfaces of the front mold 20 and the rear mold 22, and the knife edges are used for cutting burrs on the seal.

[0026] A moving table 12 is installed in the box body 1 in a vertically sliding manner, and a heater 13 is fixedly installed on the upper end surface of the moving table 12. The heater 13 is a prior art and will not be elaborated here.

[0027] The heater 13 is arranged between the two modules 19. A linkage assembly is arranged between the heater 13 and the two modules 19. The linkage assembly includes a motor 7, a connecting rod 8, a threaded rod 10, and a lead screw 18. The motor 7 is fixedly installed inside the box body 1, a connecting rod 8 is fixedly installed on the output shaft of the motor 7, a threaded rod 10 is rotatably installed at the top end inside the box body 1, and the threaded rod 10 is in threaded connection with the moving table 12.

[0028] To make the movement of the moving table 12 more stable, a guide post 14 is fixedly installed inside the box body 1. The guide post 14 is slidably connected to the moving table 12, and the guide post 14 is arranged on the side of the moving table 12 away from the threaded rod 10.

[0029] A second bevel gear 11 is fixedly mounted on the bottom end of the threaded rod 10 , and a first bevel gear 9 is fixedly mounted on the outer side of the connecting rod 8 . The first bevel gear 9 is meshingly connected with the second bevel gear 11 .

[0030] A screw rod 18 is rotatably mounted on the upper end surface of the box body 1 , and thread grooves with opposite rotation directions are respectively opened on both sides of the outer surface of the screw rod 18 . The two sides of the screw rod 18 are respectively threadedly connected to the two modules 19 , and the screw rod 18 is transmission-connected to the connecting rod 8 .

[0031] A second pulley 17 is fixedly mounted on one end of the screw rod 18 , a first pulley 15 is fixedly mounted on one end of the connecting rod 8 away from the motor 7 , and the first pulley 15 and the second pulley 17 are connected to each other through a belt 16 .

[0032] In order to heat weld the two seals, a support frame 2 is fixedly mounted on one side of the upper end surface of the box body 1, and a corner welding machine 3 is fixedly mounted on the support frame 2. The output end of the corner welding machine 3 is vertically downwardly arranged between the two modules 19.

[0033] A support platform 4 is fixedly installed on the upper end surface of the box body 1, and the support platform 4 corresponds to the support frame 2. A displacement sensor 5 is fixedly installed on the top of the support platform 4 corresponding to the side of the support frame 2, and a contact rod 6 is fixedly installed on the displacement sensor 5. When the mold is opened and the door seal is removed, the door seal is taken out upward and passes through the displacement sensor 5. The displacement sensor 5 can detect and send a signal to prompt the door seal welding corner device to prepare for the welding of the next door seal.

[0034] When the door seal is taken out upward, the door seal can touch the contact rod 6 to realize the monitoring work of the displacement sensor 5.

[0035] Working principle:

[0036] When in use, initially, the two modules are in an open mold state, and the front mold 20 and the rear mold 22 are in a closed mold state; the two seals are respectively inserted between the two sets of front molds 20 and the rear molds 22. At this time, the heater 13 is located between the two modules 19, and the heater 13 is started to start heating.

[0037] After heating, the starting motor 7 drives the connecting rod 8 to rotate, drives the first bevel gear 9 to rotate, and then drives the second bevel gear 11 to rotate. The rotation of the second bevel gear 11 drives the threaded rod 10 to rotate, and then drives the moving platform 12 and the heater 13 to move downward.

[0038] At the same time, the connecting rod 8 rotates to drive the first pulley 15 to rotate, and the second pulley 17 is driven to rotate through the belt 16, and then the screw rod 18 is driven to rotate. The rotation of the screw rod 18 drives the two mold groups 19 to move closer to each other for mold closing.

[0039] After the mold is closed, the sealing strips on the left and right sides are thermally welded using a welding corner machine 3 to form a door sealing strip. Then, the electric push rod 21 is activated to drive the rear mold 22 to move away from the front mold 20, thereby taking out the door sealing strip. At the same time of taking out, the cutting edges on the surfaces of the front mold 20 and the rear mold 22 can remove the burrs at the welding joints of the door sealing strip.

[0040] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A corner welding machine for producing door seals, comprising a box (1), wherein modules (19) are slidably arranged on both left and right sides of the upper end surface of the box (1); a movable platform (12) is slidably arranged inside the box (1) and a heater (13) is fixedly arranged on the upper end surface of the movable platform (12), and the heater (13) is arranged between two modules (19); the characteristics are as follows: A linkage assembly is arranged between the heater (13) and the two modules (19); the linkage assembly comprises a motor (7), a connecting rod (8), a threaded rod (10) and a screw (18); the motor (7) is fixedly mounted inside the box (1); the connecting rod (8) is fixedly mounted on the output shaft of the motor (7); the threaded rod (10) is rotatably mounted on the top end of the box (1); the threaded rod (10) is threadedly connected to the moving platform (12); and the threaded rod (10) is transmission-connected to the connecting rod (8); a screw (18) is rotatably mounted on the upper end surface of the box (1); thread grooves with opposite rotation directions are respectively provided on both sides of the outer surface of the screw (18); the two sides of the screw (18) are respectively threadedly connected to the two modules (19); and the screw (18) is transmission-connected to the connecting rod (8).

2. The angle welding machine for door seal production according to claim 1, characterized in that: A second bevel gear (11) is fixedly mounted on the bottom end of the threaded rod (10), a first bevel gear (9) is fixedly mounted on the outer side of the connecting rod (8), and the first bevel gear (9) is meshingly connected with the second bevel gear (11).

3. The angle welding machine for door seal production according to claim 1, characterized in that: A second pulley (17) is fixedly mounted on one end of the screw rod (18), a first pulley (15) is fixedly mounted on one end of the connecting rod (8) away from the motor (7), and the first pulley (15) and the second pulley (17) are connected by a belt (16).

4. The angle welding machine for door seal production according to claim 1, characterized in that: A support frame (2) is fixedly mounted on one side of the upper end surface of the box body (1), a corner welding machine (3) is fixedly mounted on the support frame (2), and an output end of the corner welding machine (3) is vertically downwardly arranged between two modules (19).

5. The angle welding machine for door seal production according to claim 1, characterized in that: A guide column (14) is fixedly installed inside the box (1); the guide column (14) is slidably connected to the moving platform (12), and the guide column (14) is arranged on a side of the moving platform (12) away from the threaded rod (10).

6. The angle welding machine for door seal production according to claim 1, characterized in that: A support platform (4) is fixedly mounted on the upper end surface of the box body (1), the support platform (4) corresponds to the support frame (2), a displacement sensor (5) is fixedly mounted on the top end of the support platform (4) corresponding to the side of the support frame (2), and a contact rod (6) is fixedly mounted on the displacement sensor (5).

7. The angle welding machine for door seal production according to claim 1, characterized in that: The module (19) is provided with a front module (20) and a rear module (22) inside; the front module (20) is fixedly mounted on one side inside the module (19); the rear module (22) is limitedly slidably mounted on the other side inside the module (19); an electric push rod (21) is fixedly mounted on the inner wall of the module (19), and the telescopic end of the electric push rod (21) is fixedly connected to the rear module (22).

Images