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CN-121973454-A - Injection molding high-frequency welding device

CN121973454ACN 121973454 ACN121973454 ACN 121973454ACN-121973454-A

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to an injection molding piece high-frequency welding device which comprises a machine body, a lifting mechanism, a control system, an upper die, a lower die and a high-frequency induction heating coil, wherein a connecting piece comprises a fixing piece, a lifting piece and a clamping piece, the fixing piece is fixedly connected with a telescopic end of the lifting mechanism, the lifting piece is vertically and slidably arranged on the fixing piece, a sliding rail is arranged on the lifting piece, the clamping piece is transversely and slidably arranged on the fixing piece, the inner end of the clamping piece is slidably arranged on the sliding rail, the upper die is vertically and slidably arranged on the fixing piece, the lower end face of the lifting piece is positioned below the lower end face of a plate body and above the lower end face of a frame body, a detection mechanism is arranged between the fixing piece and the upper die and used for controlling the lifting mechanism to ascend and reset when the detection mechanism detects that the upper die moves upwards relative to the fixing piece, and a clamping groove is formed in the upper die. The welding device aims to solve the problem that an upper structural member is damaged by extrusion caused by structural defects of the existing welding device.

Inventors

  • TANG XIAOHUI
  • LI CHANGSONG
  • HU ZEYU
  • LIN JIAN

Assignees

  • 浙江安胜科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (9)

  1. 1. The high-frequency welding device for the injection molding plastic parts is characterized by comprising the following components: the lifting device comprises a machine body (1), wherein a lifting mechanism (11) and a control system for controlling the lifting mechanism (11) to act are arranged on the machine body (1); an upper die (2) for pressing down the upper structural member (20), the upper die (2) comprising a plate body (21) and a frame body (22) positioned on the lower end surface of the plate body (21); the connecting piece (3), the connecting piece (3) comprises a fixing piece (31), a lifting piece (32) and a clamping piece (33); a lower die (4) for carrying a lower structural member (40), the lower die (4) being mounted on the machine body (1); when the upper structural member (20) and the lower structural member (40) are injection molding members, a high-frequency induction heating coil (30) is used for heating a metal medium (10) arranged between the upper structural member (20) and the lower structural member (40), and the high-frequency induction heating coil (30) is arranged on the upper die (2) or the lower die (4) and is electrically connected with a high-frequency generator; The fixing piece (31) is fixedly connected with the telescopic end of the lifting mechanism (11); The lifting piece (32) is vertically and slidably arranged on the fixed piece (31), a first limiting piece (341) for limiting the downward maximum movement position of the lifting piece (32) relative to the fixed piece (31) is arranged between the lifting piece (32) and the fixed piece (31), and a sliding rail (320) which is inclined outwards from top to bottom is arranged on the lifting piece (32); The clamping piece (33) is transversely and slidably arranged on the fixing piece (31), and the inner end of the clamping piece (33) is slidably arranged on the sliding rail (320); The upper die (2) is vertically and slidably arranged on the fixing piece (31), and a second limiting piece (342) for limiting the downward maximum movement position of the upper die (2) relative to the fixing piece (31) is arranged between the upper die (2) and the fixing piece (31); the lower end face of the lifting piece (32) is positioned below the lower end face of the plate body (21) and above the lower end face of the frame body (22); A detection mechanism (340) is arranged between the fixing piece (31) and the upper die (2), the detection mechanism (340) is connected with a control system in a signal manner, and the detection mechanism (340) is used for controlling the lifting mechanism (11) to ascend and reset when the upper die (2) moves upwards relative to the fixing piece (31) is detected; a clamping groove (23) is formed in the upper die (2); the lifting piece (32) comprises an ascending position and a descending position relative to the fixed piece (31); When the lifting piece (32) is positioned at the ascending position, the free end of the clamping piece (33) is clamped in the clamping groove (23); When the lifting piece (32) is positioned at the descending position, the free end of the clamping piece (33) is positioned outside the clamping groove (23).
  2. 2. The high-frequency welding device for the injection molding plastic parts is characterized by comprising the following components: the lifting device comprises a machine body (1), wherein a lifting mechanism (11) and a control system for controlling the lifting mechanism (11) to act are arranged on the machine body (1); an upper die (2) for pressing down the upper structural member (20), the upper die (2) comprising a plate body (21) and a frame body (22) positioned on the lower end surface of the plate body (21); the connecting piece (3), the connecting piece (3) comprises a fixing piece (31), a lifting piece (32) and a clamping piece (33); a lower die (4) for carrying a lower structural member (40), the lower die (4) being mounted on the machine body (1); When the upper structural member (20) is an injection molding member, the lower structural member (40) is a metal member, or the upper structural member (20) is a metal member and the lower structural member (40) is an injection molding member, a high-frequency induction heating coil (30) is used for heating the joint of the metal member and the injection molding member, and the high-frequency induction heating coil (30) is arranged on the upper die (2) or the lower die (4) and is electrically connected with a high-frequency generator; The fixing piece (31) is fixedly connected with the telescopic end of the lifting mechanism (11); The lifting piece (32) is vertically and slidably arranged on the fixed piece (31), a first limiting piece (341) for limiting the downward maximum movement position of the lifting piece (32) relative to the fixed piece (31) is arranged between the lifting piece (32) and the fixed piece (31), and a sliding rail (320) which is inclined outwards from top to bottom is arranged on the lifting piece (32); The clamping piece (33) is transversely and slidably arranged on the fixing piece (31), and the inner end of the clamping piece (33) is slidably arranged on the sliding rail (320); The upper die (2) is vertically and slidably arranged on the fixing piece (31), and a second limiting piece (342) for limiting the downward maximum movement position of the upper die (2) relative to the fixing piece (31) is arranged between the upper die (2) and the fixing piece (31); the lower end face of the lifting piece (32) is positioned below the lower end face of the plate body (21) and above the lower end face of the frame body (22); A detection mechanism (340) is arranged between the fixing piece (31) and the upper die (2), the detection mechanism (340) is connected with a control system in a signal manner, and the detection mechanism (340) is used for controlling the lifting mechanism (11) to ascend and reset when the upper die (2) moves upwards relative to the fixing piece (31) is detected; a clamping groove (23) is formed in the upper die (2); the lifting piece (32) comprises an ascending position and a descending position relative to the fixed piece (31); When the lifting piece (32) is positioned at the ascending position, the free end of the clamping piece (33) is clamped in the clamping groove (23); When the lifting piece (32) is positioned at the descending position, the free end of the clamping piece (33) is positioned outside the clamping groove (23).
  3. 3. An injection molding high-frequency welding apparatus according to any one of claims 1 or 2, wherein the detection mechanism (340) is a button.
  4. 4. The injection molding high-frequency welding device according to any one of claims 1 or 2, wherein a connecting plate (311) is fixedly arranged above the lifting part (32) on the fixing part (31), and the fixing part (31) is fixedly connected with the telescopic end of the lifting mechanism (11) through the connecting plate (311); An elastic mechanism (312) is arranged between the connecting plate (311) and the lifting piece (32), and the elastic mechanism (312) is used for pushing the lifting piece (32) to move in a direction away from the connecting plate (311).
  5. 5. The high-frequency welding device for injection molding parts according to claim 4, wherein the fixing piece (31) is vertically provided with a through hole, a vertical rod (35) is arranged in the through hole in a penetrating way, a push plate (350) is fixedly arranged below the lifting piece (32) at the lower end of the vertical rod (35), and the push plate (350) is positioned on the inner side of the frame body (22) and above the lower end surface of the frame body (22); A third limiting piece (343) is arranged at the upper end of the vertical rod (35), and the third limiting piece (343) is used for limiting the maximum downward movement distance of the vertical rod (35) relative to the lifting piece (32); The elastic mechanism (312) pushes the lifting piece (32) to move downwards through the third limiting piece (343); when the push plate (350) is not in contact with the upper structural member (20), a gap is provided between the push plate (350) and the lifter (32).
  6. 6. The high-frequency welding device for injection molding parts according to any one of claims 1 and 2, wherein a push plate (350) is slidably mounted on the lower end surface of the fixing member (31), and an elastic attachment is mounted between the lower end surface of the fixing member (31) and the push plate (350).
  7. 7. The high-frequency welding device for injection molding parts according to any one of claims 1 and 2, wherein an installation sleeve (24) is detachably installed on the upper die (2), the upper die (2) is vertically and slidably installed on a fixing piece (31) through the installation sleeve (24), and the clamping groove (23) is formed in the installation sleeve (24).
  8. 8. The high-frequency welding device for injection molding parts according to claim 7, wherein a plurality of convex columns (241) are fixedly arranged on the mounting sleeve (24); a plurality of lugs (242) are arranged above the mounting sleeve (24) of the fixing piece (31), and the convex columns (241) are arranged in the lugs (242) in a penetrating manner; The second limiting piece (342) is a stop block which is arranged on the convex column (241) and is positioned above the supporting lug (242).
  9. 9. The injection molding high-frequency welding device according to any one of claims 1 or 2, wherein a trigger is mounted on the lower die (4), and the trigger is located on a movement path of the frame (22); the trigger is electrically connected with the high-frequency induction heating coil (30).

Description

Injection molding high-frequency welding device Technical Field The invention belongs to the technical field of welding equipment, and particularly relates to a high-frequency welding device for injection molding plastic parts. Background In modern manufacturing industry, welding technology is one of the key links in the manufacturing process of products, and particularly for the production of thermal insulation container plastic parts, welding quality and efficiency directly influence the performance and production cost of the products. With the increase of market competition and the continuous increase of the product quality requirements of consumers, the traditional manual welding mode has difficulty in meeting the requirements of modern production. Although the ultrasonic welding and spin welding technologies improve the welding efficiency and quality to a certain extent, there are some limitations, such as insufficient welding stability and high production cost. As an advanced welding method, the high-frequency welding technology has the remarkable advantages of high welding speed, high welding quality and the like. The existing high-frequency welding device is mostly semi-automatic equipment, namely, the processes of placing metal media and feeding and discharging are all manual operation, and when the metal media are fed manually, the position deviation of the upper injection molding part and the lower injection molding part is caused by improper operation, so that the position deviation is difficult to be perceived under many conditions. If welding is directly carried out at this moment, when the upper mould moves down, the upper structural member of position deviation can't get into in the die cavity smoothly for when the upper mould bottom contacted the upper structural member, directly go down the upper structural member, and then lead to the problem that the upper structural member receives the extrusion damage. Disclosure of Invention The invention aims to provide an injection molding high-frequency welding device which is used for solving the problem that an upper structural member is damaged by extrusion caused by structural defects of the existing welding device. In order to achieve the technical purpose, the invention adopts the following technical scheme: an injection molding high frequency welding apparatus comprising: the machine body is provided with a lifting mechanism and a control system for controlling the action of the lifting mechanism; the upper die is used for pressing down the upper structural part and comprises a plate body and a frame body positioned on the lower end face of the plate body; The connecting piece comprises a fixing piece, a lifting piece and a clamping piece; The lower die is used for bearing a lower structural member and is arranged on the machine body; When the upper structural member and the lower structural member are injection molding members, the high-frequency induction heating coil is used for heating a metal medium arranged between the upper structural member and the lower structural member, is arranged on the upper die or the lower die and is electrically connected with the high-frequency generator; The fixing piece is fixedly connected with the telescopic end of the lifting mechanism; the lifting piece is vertically and slidably arranged on the fixing piece, a first limiting piece for limiting the lifting piece to the downward maximum movement position of the fixing piece is arranged between the lifting piece and the fixing piece, and a sliding rail which is inclined outwards from top to bottom is arranged on the lifting piece; the clamping piece is transversely and slidably arranged on the fixing piece, and the inner end of the clamping piece is slidably arranged on the sliding rail; The upper die is vertically and slidably arranged on the fixing piece, and a second limiting piece for limiting the downward maximum movement position of the upper die relative to the fixing piece is arranged between the upper die and the fixing piece; The lower end face of the lifting piece is positioned below the lower end face of the plate body and above the lower end face of the frame body; A detection mechanism is arranged between the fixing piece and the upper die and is in signal connection with the control system, and the detection mechanism is used for controlling the lifting mechanism to ascend and reset when detecting that the upper die moves upwards relative to the fixing piece; A clamping groove is formed in the upper die; The lifting piece comprises an ascending position and a descending position relative to the fixing piece; when the lifting piece is positioned at the ascending position, the free end of the clamping piece is clamped in the clamping groove; When the lifting piece is located at the descending position, the free end of the clamping piece is located outside the clamping groove. An injection molding high frequency welding apparatus comprising: