JPH0451136Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a method for heat-sealing a carrier sheet-like package containing a large number of chip parts such as chip resistors and multilayer chip capacitors, and other small items to be packaged. This relates to the structure of the device.

[Conventional technology]

In order to conveniently supply chip components such as chip resistors and multilayer chip capacitors to equipment that mounts them on circuit boards, conventionally, as shown in Fig. 4, a tape-shaped carrier sheet 1 is inflated at equal intervals. The chip component 3 is stored in the molded storage recess 2, and one side of the carrier sheet is covered with a cover tape 4 so that the chip component 3 in the storage recess does not escape. 4 is thermally sealed on both left and right sides 5a and 5b along its longitudinal direction.

In that case, as described in Japanese Patent Application Laid-Open No. 59-123300, in order to put the stored items one by one into each storage recess 2 of the carrier sheet at the storage device location for the stored items, the carrier Sheet 1 is fed intermittently at a constant pitch.

Then, at the heat-sealed portion behind the carrier sheet 1, as disclosed in Japanese Patent Application Laid-open No. 59-123300 and Japanese Patent Publication No. 46-5987, and as shown in FIG. 5 and FIG. Above the receiving die 6 that supports the cover tape 4, a heating press die 7 for pressing the left and right sides of the surface of the cover tape 4 is intermittently moved up and down using a pneumatic cylinder 9 or the like in accordance with the feeding pitch.

In this case, as disclosed in both of the above-mentioned publications, a pair of left and right pressing portions 7a and 7b in one heating pressing mold 7 are integrally formed so as to be parallel to each other over an appropriate length. .

[Problem that the invention attempts to solve]

In these prior art techniques, the carrier sheet 1 and the cover tape 4 are intermittently pressed and held between one heating press mold 7 and a receiving mold 6 having an upwardly U-shaped cross section, and the intermittent nipping is performed. Since the thermocompression bonding is carried out within a short period of time, when the heating press mold 7 tilts in the left-right direction and moves up and down with respect to the upper surface of the receiving mold 6 that supports both left and right sides of the lower surface of the carrier sheet 1, the receiving mold 6 and the left and right sides of the carrier sheet 1 are As a result of the contact pressure between the pair of pressing parts 7a and 7b being difficult to be applied uniformly on the left and right sides, there was a problem in that the sealing strength of the heat sealing parts 5a and 5b on both the left and right sides of the carrier sheet varied.

The present invention aims to solve this problem.

[Means for solving problems]

In order to achieve this purpose, in the present invention, storage recesses for storing items to be packaged are formed at appropriate intervals along the longitudinal direction of a tape-shaped carrier sheet, and a cover tape is applied to cover each storage recess. is arranged on the surface of the carrier sheet along its longitudinal direction, and the cover tape and the carrier sheet are
In the apparatus for heat sealing on both left and right sides sandwiching the storage recess, a pair of left and right heat pressing molds are installed above a receiving mold that supports the lower surface of the carrier sheet.
The left and right upper surfaces of the cover tape located on the upper surface of the carrier sheet are supported by supporting rods so as to be movable up and down so as to continuously press the upper surfaces of the cover tape toward the receiving mold, and each heating pressing mold is supported by a spring means. The structure is such that it can be independently pressed downward at.

〔Example〕

Next, to explain the embodiment of the present invention, the first embodiment
The package shown in the figure consists of a tape-shaped carrier sheet 1 made of a synthetic resin film and having a width h1, and a cover tape 4 of the same type that covers the upper surface of the carrier sheet 1.

On one side of each carrier sheet 1, substantially rectangular bottomed storage recesses 2 are formed at regular intervals P1 along its longitudinal direction. After putting the packaged items 3' into the upper opening of each storage recess 2, a heat sealing device 10 (described later) covers the top surface of the carrier sheet 1 with cover tape 4 after storing the packaged items 3'. , is constructed so that the packaged object 3' does not fall off by continuously heat-sealing it by thermocompression bonding 11, 11 shown by the dashed line in FIG.

Further, reference numeral 12 designates feeding holes drilled at positions closer to one side of each carrier sheet 1 at the same pitch as the spacing between the storage recesses 2.

The heat sealing device 10 shown in FIG. 2 and FIG. 1
It consists of a pair of left and right heating pressing molds 14 and 15 that press and clamp the heating pressing molds 1
4 and 15 each have a built-in heater 16 and a temperature sensor 17 attached thereto.

Further, the pair of heat pressing molds 14 and 15 have front and rear longitudinal pressing portions 14a and 15b projecting downward in parallel to each other so as to face the left and right pressing surfaces of the receiving mold 13, respectively.

The pair of heating press molds 14 and 15 of the present invention are suspended from a pair of support rods 19 and 19 that are supported by a support frame 18 so as to be movable up and down, respectively, in such a manner that they cannot fall but can be moved upward. Each heating press mold 1
4 and 15 can be independently pressed downward.

The pair of support rods 19, 19 are connected to a vertical drive means 21 such as a pneumatic cylinder, and during the heat sealing operation, the carrier sheet 1 and cover tape 4 placed on the upper surface of the receiving mold 13 are intermittently moved rearward. While sliding the pair of support rods 19, 19 down, the pair of heating press molds 1
Each of the pressing portions 14a and 15b in 4 and 15 is configured to be able to press toward the receiving mold 13 continuously.

In addition, when preparing to start heat sealing work or temporarily stopping heat sealing work due to trouble in the work line, etc., the pair of left and right heat pressing molds 14 and 15 are moved simultaneously to the receiving mold 13 by driving the vertical drive means 21. This configuration allows for a large separation from the

With this configuration, the items to be packaged 3' are stored in the storage recess 2 of the carrier sheet 1, the cover tape 4 is covered from above, and the items are pulled rearward by a tension mechanism (not shown) located at the rear of the receiving mold 13. , the carrier sheet 1 and the cover tape 4 are intermittently slid toward the receiving mold 13 in the direction of arrow A in FIG.

By continuously lowering the pair of left and right heating press molds 14 and 15 with the heaters 16 and 16 turned on relative to the receiving mold 13, the receiving mold 13
Since the carrier sheet 1 and the cover tape 4 can be continuously held and pressed by the pressing parts 14a and 15b of the pair of heating and pressing dies 14 and 15, both left and right sides of the mating surfaces of the carrier sheet 1 and the cover tape 4 are Thermocompression bonding 11, 11 can be carried out continuously along the longitudinal direction at a low temperature.

In this case, in the conventional technology, a pair of left and right pressing parts are integrally formed at the lower end of the heating pressing die, and since they move up and down intermittently and integrally at each feed pitch, each heating Even when the pressing mold moves up and down, the horizontal balance of the contact pressure between the pressing part and the receiving mold is not stable, and the strength of heat sealing by the heating pressing mold varies each time.

However, in this embodiment, a pair of left and right heating pressing molds 14, which sandwich the cover tape 4 and the carrier sheet 1 between the receiving mold 13 and press them continuously,
15 is independently supported up and down by support rods 19, 19, and is configured to be independently pressed and biased by biasing springs 20, 20, so that carrier sheet 1 and cover When sandwiching the tape 4 and heat sealing the left and right sides of the tape 4, the difference in thickness between the left and right sides and the inclination of the support rods on both sides may cause one side to be pressed while the other side is lifted up. There is no inconvenience, the left and right sides can be pressed and heated independently with a constant pressing force, the amount of heat is uniformly transferred to the cover tape 4, etc., and the thermocompression bonding 11 at the heat sealing part on both the left and right sides of the package is There is no variation in thermocompression bonding strength at 11 locations.

Furthermore, during the heat sealing process, the heating press mold faces the receiving mold and remains stationary so as to maintain the pressed state, and there is no frequent up and down movement, so there is less wear on the guide part of the heating press mold, which increases the durability of the equipment. It also has the effect of improving sex.

In addition, in the above embodiment, the vertical drive means 21
may be separately attached to the left and right heating press molds 14 and 15, respectively.

[Functions and effects of the idea]

According to the present invention, the heating press mold for heat-sealing the right and left sides of the carrier sheet and the cover tape is continuously pressed toward the receiving mold, and the carrier sheet and the cover tape are pressed against the receiving mold. Since it is slid between the mold and the hot press mold, a sufficient amount of heat can be transferred to the carrier sheet and the cover tape even if the heating temperature of the hot press mold is lowered.

Therefore, sufficient thermocompression bonding is possible even at low temperatures, and the strength of heat sealing can be made constant.

In addition, a pair of left and right heating press molds that sandwich and continuously press the cover tape and carrier sheet between the receiving molds are supported on support rods so as to be able to move up and down independently, and each Therefore, when sandwiching the carrier sheet and cover tape and heat-sealing the left and right sides of the carrier sheet, there is no need to worry about the difference in thickness between the left and right sides or the inclination of the support rods on the left and right sides. As a result, there is no problem such as one side being pressed while the other side lifts up, and both the left and right sides can be pressed and heated independently with a constant pressing force, and the amount of heat is evenly transferred to the cover tape, etc. Therefore, there is an effect that there is no variation in the thermocompression bonding strength of the thermocompression bonding points in the heat sealing portions on both the left and right sides of the package.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention, Figure 1 is a plan view of the carrier sheet, Figure 2 is a partially cutaway side sectional view of the device, and Figure 3 is taken along the line - - of Figure 2. Partially cutaway sectional views, FIGS. 4 to 6 show the prior art, FIG. 4 is a plan view of the carrier sheet, and FIG.
The figure is a sectional side view of the device, and FIG. 6 is a sectional view taken along the line -- in FIG. 1...Carrier sheet, 4...Cover tape,
2... Storage recess, 3'... Item to be packaged, 10... Heat sealing device, 11, 11... Heat compression bonding, 12... Feeding hole, 13, 6... Receiving mold, 714, 15... Heating press mold, 14a, 15a...pressing part, 16...
Heater, 17... Temperature sensor, 18... Support frame, 19, 19... Support rod, 20, 20
...Biasing spring, 21...Vertical drive means.

Claims (1)

[Scope of utility model registration request] Storage recesses for storing items to be packaged are formed in a tape-shaped carrier sheet at appropriate intervals along its longitudinal direction, and a cover tape covering each storage recess is formed on the surface of the carrier sheet in the longitudinal direction. In the apparatus for heat sealing the cover tape and the carrier sheet on both left and right sides sandwiching the storage recess, a pair of left and right parts are arranged above a receiving mold that supports the lower surface of the carrier sheet. The heating and pressing molds are arranged so as to be movable up and down on support rods so as to continuously press the top surfaces of both left and right sides of the cover tape located on the top surface of the carrier sheet toward the receiving mold. 1. A heat sealing device for a package, characterized in that each of the pressing dies is configured to be independently pressed downward by a spring means.